Ochoa syndrome

Mendelian MONDO:0000463 Pathograph 17 hereditary disease urinary system disease neurodevelopmental disorder

Ochoa syndrome, also called urofacial syndrome, is a rare autosomal recessive disorder caused by biallelic pathogenic variants in HPSE2 or LRIG2. It is characterized by childhood-onset urinary bladder voiding dysfunction, abnormal facial movement with expression, and frequent bowel dysfunction. Current evidence supports a peripheral neurodevelopmental mechanism in which HPSE2 or LRIG2 dysfunction disrupts autonomic nerve patterning in the urinary bladder and outflow tract, producing functional bladder outlet obstruction, incomplete emptying, urinary tract infection, vesicoureteral reflux, and risk of progressive renal injury.

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1
Mappings
1
Definitions
1
Inheritance
6
Pathophys.
15
Phenotypes
17
Pathograph
2
Genes
5
Treatments
7
References
1
Deep Research
🔗

Mappings

MONDO
MONDO:0000463 Ochoa syndrome
skos:exactMatch Orphanet ORPHA:2704
Orphanet ORPHA:2704 lists MONDO:0000463 as an exact cross-reference for urofacial syndrome/Ochoa syndrome.
📘

Definitions

1
Orphanet urofacial syndrome definition
A rare syndromic urinary tract malformation defined by severe voiding dysfunction and inversion of facial expression when smiling or crying.
OTHER
Show evidence (1 reference)
ORPHA:2704 SUPPORT Other
"A rare syndromic urinary tract malformation characterized by the association of severe voiding dysfunction and inversion of facial expression when the child smiles or cries."
Orphanet defines the core urinary and facial-expression features of the syndrome.
👪

Inheritance

1
Autosomal recessive inheritance HP:0000007
Ochoa syndrome is inherited in an autosomal recessive pattern and is caused by biallelic pathogenic variants in HPSE2 or LRIG2.
Autosomal recessive inheritance
Show evidence (2 references)
ORPHA:2704 SUPPORT Other
"Autosomal recessive"
Orphanet records autosomal recessive inheritance for urofacial syndrome.
PMID:23967498 SUPPORT Human Clinical
"UFS is inherited in an autosomal recessive manner."
GeneReviews directly states the inheritance pattern.
⚙

Pathophysiology

6
Biallelic HPSE2 or LRIG2 dysfunction
Biallelic pathogenic variants in HPSE2 or LRIG2 are the initiating genetic lesions in most molecularly diagnosed Ochoa syndrome families.
HPSE2 link LRIG2 link
peripheral nervous system development link ⚠ ABNORMAL
Downstream
Aberrant urinary bladder autonomic innervation HPSE2 and LRIG2 dysfunction disrupts urinary-tract peripheral nerve patterning.
Abnormal facial movement with expression The same syndrome includes abnormal facial motor expression when smiling or crying.
Show evidence (3 references)
PMID:20560210 SUPPORT Human Clinical
"causative gene for UFS."
This discovery study supports HPSE2 as a causal gene for urofacial syndrome.
PMID:23313374 SUPPORT Human Clinical
"individuals have biallelic mutations in LRIG2"
This discovery study supports LRIG2 as a causal gene for urofacial syndrome.
PMID:23967498 SUPPORT Human Clinical
"with characteristic features and biallelic pathogenic variants in either HPSE2"
GeneReviews summarizes HPSE2 and LRIG2 as the molecular diagnostic genes.
Aberrant urinary bladder autonomic innervation
HPSE2 and LRIG2 proteins localize to developing peripheral nerves of the fetal bladder, and mutant models show abnormal nerve density and reduced nitrergic outflow-tract innervation.
autonomic neuron link peripheral nervous system neuron link
autonomic nervous system development link ⚠ ABNORMAL
urinary bladder link
Downstream
Functional bladder outlet obstruction and incomplete emptying Aberrant innervation disrupts coordinated detrusor contraction and outflow-tract relaxation.
Show evidence (3 references)
PMID:30885509 SUPPORT Model Organism
"mutations in either Lrig2 or Hpse2 had increased nerve density within the body"
Mouse models directly support abnormal bladder nerve patterning downstream of either causal gene.
PMID:30885509 SUPPORT Model Organism
"peripheral neuropathy is part of the pathobiology of UFS bladder disease"
The study interprets the urinary phenotype as a peripheral neuropathy of the bladder.
PMID:23832138 SUPPORT Human Clinical
"detected in autonomic nerves growing into fetal bladders."
This supports localization of both disease proteins to developing bladder autonomic nerves.
Functional bladder outlet obstruction and incomplete emptying
The bladder contracts against an inadequately relaxed outflow tract, producing poor urinary stream, residual urine, urinary incontinence, and recurrent infection risk despite the absence of an anatomic obstruction.
smooth muscle cell link
smooth muscle contraction link ⚠ ABNORMAL
urinary bladder link
Downstream
Urinary stasis and vesicoureteral reflux Residual urine and high-pressure dysfunction predispose to infection and reflux.
Show evidence (3 references)
PMID:23967498 SUPPORT Human Clinical
"poor urinary stream and dribbling incontinence"
GeneReviews describes the clinical bladder-emptying defect.
PMID:30885509 SUPPORT Human Clinical
"detrusor smooth muscle contracts against a poorly dilated outflow tract"
This supports dyssynergic detrusor-outflow mechanics as the functional obstruction.
PMID:23832138 SUPPORT Human Clinical
"incomplete bladder emptying due to simultaneous detrusor muscle"
This supports the pathophysiologic mechanism of incomplete emptying.
Urinary stasis and vesicoureteral reflux
Incomplete bladder emptying permits urinary stasis, infection, and vesicoureteral reflux from the bladder toward the upper urinary tract.
urinary bladder link
Downstream
Progressive renal injury Recurrent infection and reflux can damage the kidneys and progress to renal failure.
Show evidence (2 references)
PMID:23967498 SUPPORT Human Clinical
"bladder emptying can lead to urinary infection with progressive kidney failure."
GeneReviews links residual urine to infection and progressive renal failure.
PMID:20560210 SUPPORT Human Clinical
"reflux of infected urine from the bladder to the upper"
The HPSE2 discovery paper supports reflux of infected urine from the bladder to the upper renal tract.
Progressive renal injury
Reflux of infected urine and recurrent urinary infection can damage the kidneys, producing renal insufficiency, severe kidney failure, or need for transplantation.
kidney link
Show evidence (2 references)
PMID:23967498 SUPPORT Human Clinical
"bladder emptying can lead to urinary infection with progressive kidney failure."
GeneReviews links impaired bladder emptying to urinary infection and progressive kidney failure.
PMID:20560210 SUPPORT Human Clinical
"renal tract, with a risk of kidney damage and renal failure."
The HPSE2 discovery paper supports renal injury and renal failure as complications of reflux.
Abnormal facial movement with expression
Ochoa syndrome includes inversion or grimacing of facial expression when the child smiles, laughs, or cries. The described abnormal co-contraction of the corners of the mouth and eyes is represented with the HPO facial synkinesis term, while the preferred term preserves the clinically recognized Ochoa syndrome expression phenotype.
Show evidence (2 references)
PMID:23967498 SUPPORT Human Clinical
"abnormal facial movement with expression"
GeneReviews identifies abnormal facial movement with expression as a defining syndrome feature.
ORPHA:2704 SUPPORT Other
"inversion of facial expression when the child smiles or cries."
Orphanet's definition supports the distinctive inverted facial expression.
⬡

Pathograph

Use the checkboxes to hide or show graph categories. Hover nodes for evidence and cross-linked metadata.
Pathograph: causal mechanism network for Ochoa syndrome Interactive directed graph showing how pathophysiology mechanisms, phenotypes, genetic factors and variants, experimental models, environmental triggers, and treatments relate through causal and linked edges.
●

Phenotypes

15
Cardiovascular 1
Hypertension OCCASIONAL Hypertension (HP:0000822)
Show evidence (1 reference)
ORPHA:2704 SUPPORT Other
"HP:0000822 | Hypertension | Occasional (29-5%)"
Orphanet reports hypertension as occasional.
Digestive 1
Constipation FREQUENT Constipation (HP:0002019)
Show evidence (2 references)
ORPHA:2704 SUPPORT Other
"HP:0002019 | Constipation | Frequent (79-30%)"
Orphanet reports constipation as frequent.
PMID:23967498 SUPPORT Human Clinical
"dysfunction (constipation and/or encopresis)."
GeneReviews supports constipation as part of bowel dysfunction.
Genitourinary 3
Bladder voiding dysfunction VERY_FREQUENT Neurogenic bladder (HP:0000011)
Show evidence (2 references)
PMID:23967498 SUPPORT Human Clinical
"prenatal or childhood onset of urinary bladder voiding"
GeneReviews supports early-onset bladder voiding dysfunction as a defining feature.
PMID:30885509 SUPPORT Human Clinical
"non-neurogenic neurogenic bladder"
The literature describes the bladder phenotype as neurogenic-like despite no gross neurologic lesion.
Renal insufficiency OCCASIONAL Renal insufficiency (HP:0000083)
Show evidence (2 references)
ORPHA:2704 SUPPORT Other
"HP:0000083 | Renal insufficiency | Occasional (29-5%)"
Orphanet reports renal insufficiency as occasional.
PMID:23967498 SUPPORT Human Clinical
"progressive kidney failure."
GeneReviews supports progressive kidney failure as a complication of incomplete emptying.
Cryptorchidism FREQUENT Cryptorchidism (HP:0000028)
Show evidence (1 reference)
ORPHA:2704 SUPPORT Other
"HP:0000028 | Cryptorchidism | Frequent (79-30%)"
Orphanet reports cryptorchidism as frequent.
Head and Neck 1
Nocturnal lagophthalmos Lagophthalmos (HP:0030001)
Show evidence (1 reference)
PMID:23967498 SUPPORT Human Clinical
"lagophthalmos (incomplete closing of the eyes during sleep)"
GeneReviews supports nocturnal lagophthalmos as a documented feature.
Nervous System 2
Abnormal facial movement with expression Facial synkinesis (HP:0034979)
Show evidence (3 references)
PMID:23967498 SUPPORT Human Clinical
"abnormal facial movement with expression"
GeneReviews supports abnormal facial movement as a core diagnostic feature.
PMID:23967498 SUPPORT Human Clinical
"co-contraction of the corners of the mouth and eyes"
GeneReviews supports facial synkinesis as the closest HPO representation of the abnormal expression.
ORPHA:2704 SUPPORT Other
"Inverted smile-neurogenic bladder syndrome"
Orphanet lists inverted smile-neurogenic bladder syndrome as a synonym.
Polydipsia OCCASIONAL Polydipsia (HP:0001959)
Show evidence (1 reference)
ORPHA:2704 SUPPORT Other
"HP:0001959 | Polydipsia | Occasional (29-5%)"
Orphanet reports polydipsia as occasional.
Constitutional 2
Urinary incontinence FREQUENT Urinary incontinence (HP:0000020)
Show evidence (2 references)
ORPHA:2704 SUPPORT Other
"HP:0000020 | Urinary incontinence | Frequent (79-30%)"
Orphanet reports urinary incontinence as frequent.
PMID:23967498 SUPPORT Human Clinical
"poor urinary stream and dribbling incontinence"
GeneReviews supports dribbling incontinence as part of the bladder phenotype.
Bowel incontinence OCCASIONAL Bowel incontinence (HP:0002607)
Show evidence (2 references)
ORPHA:2704 SUPPORT Other
"HP:0002607 | Bowel incontinence | Occasional (29-5%)"
Orphanet reports bowel incontinence as occasional.
PMID:23967498 SUPPORT Human Clinical
"constipation and/or encopresis"
GeneReviews supports encopresis as part of bowel dysfunction.
Other 5
Prenatal megacystis Megacystis (HP:0000021)
Show evidence (1 reference)
PMID:23967498 SUPPORT Human Clinical
"present before birth as megacystis."
GeneReviews supports fetal megacystis as a possible prenatal presentation.
Recurrent urinary tract infections VERY_FREQUENT Recurrent urinary tract infections (HP:0000010)
Show evidence (2 references)
ORPHA:2704 SUPPORT Other
"HP:0000010 | Recurrent urinary tract infections | Very frequent (99-80%)"
Orphanet reports recurrent urinary tract infections as very frequent.
PMID:23967498 SUPPORT Human Clinical
"bladder emptying can lead to urinary infection"
GeneReviews explains why incomplete bladder emptying causes urinary infections.
Vesicoureteral reflux FREQUENT Vesicoureteral reflux (HP:0000076)
Show evidence (2 references)
ORPHA:2704 SUPPORT Other
"HP:0000076 | Vesicoureteral reflux | Frequent (79-30%)"
Orphanet reports vesicoureteral reflux as frequent.
PMID:23967498 SUPPORT Human Clinical
"vesicoureteral reflux of urine into the ureter and renal pelvis."
GeneReviews supports vesicoureteral reflux as an investigation finding.
Hydronephrosis FREQUENT Hydronephrosis (HP:0000126)
Show evidence (1 reference)
ORPHA:2704 SUPPORT Other
"HP:0000126 | Hydronephrosis | Frequent (79-30%)"
Orphanet reports hydronephrosis as frequent.
Urethral obstruction FREQUENT Urethral obstruction (HP:0000796)
Show evidence (2 references)
ORPHA:2704 SUPPORT Other
"HP:0000796 | Urethral obstruction | Frequent (79-30%)"
Orphanet reports urethral obstruction as frequent.
PMID:30885509 SUPPORT Human Clinical
"causing functional bladder outlet obstruction."
The mechanistic paper describes the obstruction as functional bladder outlet obstruction.
🧬

Genetic Associations

2
HPSE2 (Causal biallelic loss-of-function variant)
Show evidence (3 references)
ORPHA:2704 SUPPORT Other
"HPSE2 | heparanase 2 (inactive) | hgnc:18374 | Disease-causing germline mutation(s) in"
Orphanet lists HPSE2 as a disease-causing gene for urofacial syndrome.
PMID:20560210 SUPPORT Human Clinical
"frameshift mutations in five further unrelated families"
The HPSE2 discovery paper describes disease-causing HPSE2 variant classes.
PMID:35812751 SUPPORT Human Clinical
"Biallelic variants in HPSE2, coding for the secreted"
This larger genotype paper supports HPSE2 as a major causal gene.
LRIG2 (Causal biallelic loss-of-function variant)
Show evidence (3 references)
ORPHA:2704 SUPPORT Other
"LRIG2 | leucine rich repeats and immunoglobulin like domains 2 | hgnc:20889 | Disease-causing germline mutation(s) in"
Orphanet lists LRIG2 as a disease-causing gene for urofacial syndrome.
PMID:23313374 SUPPORT Human Clinical
"individuals have biallelic mutations in LRIG2"
The LRIG2 discovery paper directly supports LRIG2 as a causal gene.
PMID:30885509 SUPPORT Human Clinical
"Biallelic putative null variants of LRIG2 have been reported in a subset of families with UFS."
This later study supports LRIG2 causal variants and related bladder phenotypes.
💊

Treatments

5
Bladder-directed pharmacotherapy
Action: Pharmacotherapy NCIT:C15986
Agent: anticholinergic agent ↗
Anticholinergic and alpha-1 adrenergic blocking medications can reduce high bladder pressure and improve voiding.
Mechanism Target:
MODULATES Functional bladder outlet obstruction and incomplete emptying — Pharmacotherapy aims to lower bladder pressure and improve urine emptying.
Show evidence (1 reference)
PMID:23967498 SUPPORT Human Clinical
"Anticholinergic and alpha-1 adrenergic"
GeneReviews supports medication targeting bladder pressure and voiding.
Target Phenotypes: Neurogenic bladder-like voiding dysfunction ↗
Show evidence (1 reference)
PMID:23967498 SUPPORT Human Clinical
"Anticholinergic and alpha-1 adrenergic"
GeneReviews lists these medications for management of urinary manifestations.
Intermittent catheterization or vesicostomy
Action: catheterization MAXO:0001389
Catheterization or vesicostomy can improve bladder drainage when medication alone does not adequately empty the bladder.
Mechanism Target:
MODULATES Functional bladder outlet obstruction and incomplete emptying — Bladder drainage reduces residual urine and infection risk.
Show evidence (1 reference)
PMID:23967498 SUPPORT Human Clinical
"catheterization per urethra or through vesicostomy."
GeneReviews supports catheterization or vesicostomy as bladder-drainage management.
Target Phenotypes: Neurogenic bladder-like voiding dysfunction ↗
Show evidence (1 reference)
PMID:23967498 SUPPORT Human Clinical
"catheterization per urethra or through vesicostomy."
GeneReviews lists catheterization or vesicostomy as management options.
Lubricant eye drops and nighttime eye ointment
Action: supportive care MAXO:0000950
Lubricant eye drops during the day and eye ointment at night can protect the ocular surface in nocturnal lagophthalmos.
Target Phenotypes: Nocturnal lagophthalmos ↗
Show evidence (1 reference)
PMID:23967498 SUPPORT Human Clinical
"Lubricant eye drops during the day and eye"
GeneReviews recommends ocular lubrication for nocturnal lagophthalmos.
Antibiotic therapy for urinary tract infection
Action: Antibiotic Therapy NCIT:C15620
Rapid antibiotic treatment is used for acute urinary tract infections.
Target Phenotypes: Recurrent urinary tract infections ↗
Show evidence (1 reference)
PMID:23967498 SUPPORT Human Clinical
"Rapid and complete antibiotic therapy"
GeneReviews supports prompt antibiotic treatment for acute urinary tract infections.
Kidney transplantation for severe kidney failure
Action: Kidney Transplantation NCIT:C15265
Long-term dialysis and kidney transplantation may be required when urinary tract complications progress to severe kidney failure.
Target Phenotypes: Renal insufficiency ↗
Show evidence (1 reference)
PMID:23967498 SUPPORT Human Clinical
"dialysis and kidney transplantation."
GeneReviews supports kidney transplantation for severe kidney failure.
{ }

Source YAML

click to show 
name: Ochoa syndrome
category: Mendelian
creation_date: '2026-05-03T12:41:00Z'
updated_date: '2026-05-03T12:41:00Z'
synonyms:
- Urofacial syndrome
- Hydronephrosis-inverted smile syndrome
- Inverted smile-neurogenic bladder syndrome
- Partial facial palsy with urinary abnormalities
description: >
  Ochoa syndrome, also called urofacial syndrome, is a rare autosomal recessive
  disorder caused by biallelic pathogenic variants in HPSE2 or LRIG2. It is
  characterized by childhood-onset urinary bladder voiding dysfunction,
  abnormal facial movement with expression, and frequent bowel dysfunction.
  Current evidence supports a peripheral neurodevelopmental mechanism in which
  HPSE2 or LRIG2 dysfunction disrupts autonomic nerve patterning in the urinary
  bladder and outflow tract, producing functional bladder outlet obstruction,
  incomplete emptying, urinary tract infection, vesicoureteral reflux, and risk
  of progressive renal injury.
disease_term:
  preferred_term: Ochoa syndrome
  term:
    id: MONDO:0000463
    label: Ochoa syndrome
parents:
- hereditary disease
- urinary system disease
- neurodevelopmental disorder
mappings:
  mondo_mappings:
  - term:
      id: MONDO:0000463
      label: Ochoa syndrome
    mapping_predicate: skos:exactMatch
    mapping_source: Orphanet ORPHA:2704
    mapping_justification: >
      Orphanet ORPHA:2704 lists MONDO:0000463 as an exact cross-reference for
      urofacial syndrome/Ochoa syndrome.
external_assertions:
- name: Orphanet Urofacial syndrome disease record
  source: Orphanet
  assertion_type: structured_disease_record
  external_id: ORPHA:2704
  url: http://www.orpha.net/consor/cgi-bin/OC_Exp.php?lng=en&Expert=2704
  description: >
    Orphanet's ORPHA:2704 structured record for Urofacial syndrome includes the
    exact MONDO cross-reference, synonyms, definition, autosomal recessive
    inheritance, epidemiology, HPSE2/LRIG2 gene associations, and HPO phenotype
    annotations used in this entry.
  evidence:
  - reference: ORPHA:2704
    reference_title: "Urofacial syndrome (Orphanet structured-database record)"
    supports: SUPPORT
    evidence_source: OTHER
    snippet: "MONDO:0000463 | Exact"
    explanation: Orphanet maps ORPHA:2704 to the same MONDO identifier used by this entry.
definitions:
- name: Orphanet urofacial syndrome definition
  definition_type: OTHER
  description: >
    A rare syndromic urinary tract malformation defined by severe voiding
    dysfunction and inversion of facial expression when smiling or crying.
  evidence:
  - reference: ORPHA:2704
    reference_title: "Urofacial syndrome (Orphanet structured-database record)"
    supports: SUPPORT
    evidence_source: OTHER
    snippet: "A rare syndromic urinary tract malformation characterized by the association of severe voiding dysfunction and inversion of facial expression when the child smiles or cries."
    explanation: Orphanet defines the core urinary and facial-expression features of the syndrome.
inheritance:
- name: Autosomal recessive inheritance
  description: >
    Ochoa syndrome is inherited in an autosomal recessive pattern and is caused
    by biallelic pathogenic variants in HPSE2 or LRIG2.
  inheritance_term:
    preferred_term: Autosomal recessive inheritance
    term:
      id: HP:0000007
      label: Autosomal recessive inheritance
  evidence:
  - reference: ORPHA:2704
    reference_title: "Urofacial syndrome (Orphanet structured-database record)"
    supports: SUPPORT
    evidence_source: OTHER
    snippet: "Autosomal recessive"
    explanation: Orphanet records autosomal recessive inheritance for urofacial syndrome.
  - reference: PMID:23967498
    reference_title: "Urofacial Syndrome."
    supports: SUPPORT
    evidence_source: HUMAN_CLINICAL
    snippet: "UFS is inherited in an autosomal recessive manner."
    explanation: GeneReviews directly states the inheritance pattern.
pathophysiology:
- name: Biallelic HPSE2 or LRIG2 dysfunction
  description: >
    Biallelic pathogenic variants in HPSE2 or LRIG2 are the initiating genetic
    lesions in most molecularly diagnosed Ochoa syndrome families.
  genes:
  - preferred_term: HPSE2
    term:
      id: hgnc:18374
      label: HPSE2
  - preferred_term: LRIG2
    term:
      id: hgnc:20889
      label: LRIG2
  biological_processes:
  - preferred_term: peripheral nervous system development
    modifier: ABNORMAL
    term:
      id: GO:0007422
      label: peripheral nervous system development
  evidence:
  - reference: PMID:20560210
    reference_title: "Mutations in HPSE2 cause urofacial syndrome."
    supports: SUPPORT
    evidence_source: HUMAN_CLINICAL
    snippet: "causative gene for UFS."
    explanation: This discovery study supports HPSE2 as a causal gene for urofacial syndrome.
  - reference: PMID:23313374
    reference_title: "LRIG2 mutations cause urofacial syndrome."
    supports: SUPPORT
    evidence_source: HUMAN_CLINICAL
    snippet: "individuals have biallelic mutations in LRIG2"
    explanation: This discovery study supports LRIG2 as a causal gene for urofacial syndrome.
  - reference: PMID:23967498
    reference_title: "Urofacial Syndrome."
    supports: SUPPORT
    evidence_source: HUMAN_CLINICAL
    snippet: "with characteristic features and biallelic pathogenic variants in either HPSE2"
    explanation: GeneReviews summarizes HPSE2 and LRIG2 as the molecular diagnostic genes.
  downstream:
  - target: Aberrant urinary bladder autonomic innervation
    description: HPSE2 and LRIG2 dysfunction disrupts urinary-tract peripheral nerve patterning.
  - target: Abnormal facial movement with expression
    description: The same syndrome includes abnormal facial motor expression when smiling or crying.
- name: Aberrant urinary bladder autonomic innervation
  description: >
    HPSE2 and LRIG2 proteins localize to developing peripheral nerves of the
    fetal bladder, and mutant models show abnormal nerve density and reduced
    nitrergic outflow-tract innervation.
  locations:
  - preferred_term: urinary bladder
    term:
      id: UBERON:0001255
      label: urinary bladder
  cell_types:
  - preferred_term: autonomic neuron
    term:
      id: CL:0000107
      label: autonomic neuron
  - preferred_term: peripheral nervous system neuron
    term:
      id: CL:2000032
      label: peripheral nervous system neuron
  biological_processes:
  - preferred_term: autonomic nervous system development
    modifier: ABNORMAL
    term:
      id: GO:0048483
      label: autonomic nervous system development
  evidence:
  - reference: PMID:30885509
    reference_title: "Lrig2 and Hpse2, mutated in urofacial syndrome, pattern nerves in the urinary bladder."
    supports: SUPPORT
    evidence_source: MODEL_ORGANISM
    snippet: "mutations in either Lrig2 or Hpse2 had increased nerve density within the body"
    explanation: Mouse models directly support abnormal bladder nerve patterning downstream of either causal gene.
  - reference: PMID:30885509
    reference_title: "Lrig2 and Hpse2, mutated in urofacial syndrome, pattern nerves in the urinary bladder."
    supports: SUPPORT
    evidence_source: MODEL_ORGANISM
    snippet: "peripheral neuropathy is part of the pathobiology of UFS bladder disease"
    explanation: The study interprets the urinary phenotype as a peripheral neuropathy of the bladder.
  - reference: PMID:23832138
    reference_title: "Urofacial syndrome: a genetic and congenital disease of aberrant urinary bladder innervation."
    supports: SUPPORT
    evidence_source: HUMAN_CLINICAL
    snippet: "detected in autonomic nerves growing into fetal bladders."
    explanation: This supports localization of both disease proteins to developing bladder autonomic nerves.
  downstream:
  - target: Functional bladder outlet obstruction and incomplete emptying
    description: Aberrant innervation disrupts coordinated detrusor contraction and outflow-tract relaxation.
- name: Functional bladder outlet obstruction and incomplete emptying
  description: >
    The bladder contracts against an inadequately relaxed outflow tract,
    producing poor urinary stream, residual urine, urinary incontinence, and
    recurrent infection risk despite the absence of an anatomic obstruction.
  locations:
  - preferred_term: urinary bladder
    term:
      id: UBERON:0001255
      label: urinary bladder
  cell_types:
  - preferred_term: smooth muscle cell
    term:
      id: CL:0000192
      label: smooth muscle cell
  biological_processes:
  - preferred_term: smooth muscle contraction
    modifier: ABNORMAL
    term:
      id: GO:0006939
      label: smooth muscle contraction
  evidence:
  - reference: PMID:23967498
    reference_title: "Urofacial Syndrome."
    supports: SUPPORT
    evidence_source: HUMAN_CLINICAL
    snippet: "poor urinary stream and dribbling incontinence"
    explanation: GeneReviews describes the clinical bladder-emptying defect.
  - reference: PMID:30885509
    reference_title: "Lrig2 and Hpse2, mutated in urofacial syndrome, pattern nerves in the urinary bladder."
    supports: SUPPORT
    evidence_source: HUMAN_CLINICAL
    snippet: "detrusor smooth muscle contracts against a poorly dilated outflow tract"
    explanation: This supports dyssynergic detrusor-outflow mechanics as the functional obstruction.
  - reference: PMID:23832138
    reference_title: "Urofacial syndrome: a genetic and congenital disease of aberrant urinary bladder innervation."
    supports: SUPPORT
    evidence_source: HUMAN_CLINICAL
    snippet: "incomplete bladder emptying due to simultaneous detrusor muscle"
    explanation: This supports the pathophysiologic mechanism of incomplete emptying.
  downstream:
  - target: Urinary stasis and vesicoureteral reflux
    description: Residual urine and high-pressure dysfunction predispose to infection and reflux.
- name: Urinary stasis and vesicoureteral reflux
  description: >
    Incomplete bladder emptying permits urinary stasis, infection, and
    vesicoureteral reflux from the bladder toward the upper urinary tract.
  locations:
  - preferred_term: urinary bladder
    term:
      id: UBERON:0001255
      label: urinary bladder
  evidence:
  - reference: PMID:23967498
    reference_title: "Urofacial Syndrome."
    supports: SUPPORT
    evidence_source: HUMAN_CLINICAL
    snippet: "bladder emptying can lead to urinary infection with progressive kidney failure."
    explanation: GeneReviews links residual urine to infection and progressive renal failure.
  - reference: PMID:20560210
    reference_title: "Mutations in HPSE2 cause urofacial syndrome."
    supports: SUPPORT
    evidence_source: HUMAN_CLINICAL
    snippet: "reflux of infected urine from the bladder to the upper"
    explanation: The HPSE2 discovery paper supports reflux of infected urine from the bladder to the upper renal tract.
  downstream:
  - target: Progressive renal injury
    description: Recurrent infection and reflux can damage the kidneys and progress to renal failure.
- name: Progressive renal injury
  description: >
    Reflux of infected urine and recurrent urinary infection can damage the
    kidneys, producing renal insufficiency, severe kidney failure, or need for
    transplantation.
  locations:
  - preferred_term: kidney
    term:
      id: UBERON:0002113
      label: kidney
  evidence:
  - reference: PMID:23967498
    reference_title: "Urofacial Syndrome."
    supports: SUPPORT
    evidence_source: HUMAN_CLINICAL
    snippet: "bladder emptying can lead to urinary infection with progressive kidney failure."
    explanation: GeneReviews links impaired bladder emptying to urinary infection and progressive kidney failure.
  - reference: PMID:20560210
    reference_title: "Mutations in HPSE2 cause urofacial syndrome."
    supports: SUPPORT
    evidence_source: HUMAN_CLINICAL
    snippet: "renal tract, with a risk of kidney damage and renal failure."
    explanation: The HPSE2 discovery paper supports renal injury and renal failure as complications of reflux.
- name: Abnormal facial movement with expression
  description: >
    Ochoa syndrome includes inversion or grimacing of facial expression when the
    child smiles, laughs, or cries. The described abnormal co-contraction of the
    corners of the mouth and eyes is represented with the HPO facial synkinesis
    term, while the preferred term preserves the clinically recognized Ochoa
    syndrome expression phenotype.
  evidence:
  - reference: PMID:23967498
    reference_title: "Urofacial Syndrome."
    supports: SUPPORT
    evidence_source: HUMAN_CLINICAL
    snippet: "abnormal facial movement with expression"
    explanation: GeneReviews identifies abnormal facial movement with expression as a defining syndrome feature.
  - reference: ORPHA:2704
    reference_title: "Urofacial syndrome (Orphanet structured-database record)"
    supports: SUPPORT
    evidence_source: OTHER
    snippet: "inversion of facial expression when the child smiles or cries."
    explanation: Orphanet's definition supports the distinctive inverted facial expression.
phenotypes:
- name: Abnormal facial movement with expression
  diagnostic: true
  description: >
    Affected individuals characteristically show inverted or grimacing facial
    expression when smiling, laughing, or crying.
  phenotype_term:
    preferred_term: Facial synkinesis
    term:
      id: HP:0034979
      label: Facial synkinesis
  evidence:
  - reference: PMID:23967498
    reference_title: "Urofacial Syndrome."
    supports: SUPPORT
    evidence_source: HUMAN_CLINICAL
    snippet: "abnormal facial movement with expression"
    explanation: GeneReviews supports abnormal facial movement as a core diagnostic feature.
  - reference: PMID:23967498
    reference_title: "Urofacial Syndrome."
    supports: SUPPORT
    evidence_source: HUMAN_CLINICAL
    snippet: "co-contraction of the corners of the mouth and eyes"
    explanation: GeneReviews supports facial synkinesis as the closest HPO representation of the abnormal expression.
  - reference: ORPHA:2704
    reference_title: "Urofacial syndrome (Orphanet structured-database record)"
    supports: SUPPORT
    evidence_source: OTHER
    snippet: "Inverted smile-neurogenic bladder syndrome"
    explanation: Orphanet lists inverted smile-neurogenic bladder syndrome as a synonym.
- name: Bladder voiding dysfunction
  frequency: VERY_FREQUENT
  diagnostic: true
  description: >
    Prenatal or childhood-onset bladder voiding dysfunction is the central
    urinary phenotype, often manifesting as poor stream, dribbling, residual
    urine, and high-pressure dysfunction.
  phenotype_term:
    preferred_term: Neurogenic bladder-like voiding dysfunction
    term:
      id: HP:0000011
      label: Neurogenic bladder
  evidence:
  - reference: PMID:23967498
    reference_title: "Urofacial Syndrome."
    supports: SUPPORT
    evidence_source: HUMAN_CLINICAL
    snippet: "prenatal or childhood onset of urinary bladder voiding"
    explanation: GeneReviews supports early-onset bladder voiding dysfunction as a defining feature.
  - reference: PMID:30885509
    reference_title: "Lrig2 and Hpse2, mutated in urofacial syndrome, pattern nerves in the urinary bladder."
    supports: SUPPORT
    evidence_source: HUMAN_CLINICAL
    snippet: "non-neurogenic neurogenic bladder"
    explanation: The literature describes the bladder phenotype as neurogenic-like despite no gross neurologic lesion.
- name: Prenatal megacystis
  description: Megacystis can be the prenatal presentation of bladder voiding dysfunction.
  phenotype_term:
    preferred_term: Prenatal megacystis
    term:
      id: HP:0000021
      label: Megacystis
  evidence:
  - reference: PMID:23967498
    reference_title: "Urofacial Syndrome."
    supports: SUPPORT
    evidence_source: HUMAN_CLINICAL
    snippet: "present before birth as megacystis."
    explanation: GeneReviews supports fetal megacystis as a possible prenatal presentation.
- name: Nocturnal lagophthalmos
  description: Incomplete eyelid closure during sleep has been documented in Ochoa syndrome.
  phenotype_term:
    preferred_term: Nocturnal lagophthalmos
    term:
      id: HP:0030001
      label: Lagophthalmos
  evidence:
  - reference: PMID:23967498
    reference_title: "Urofacial Syndrome."
    supports: SUPPORT
    evidence_source: HUMAN_CLINICAL
    snippet: "lagophthalmos (incomplete closing of the eyes during sleep)"
    explanation: GeneReviews supports nocturnal lagophthalmos as a documented feature.
- name: Recurrent urinary tract infections
  frequency: VERY_FREQUENT
  description: Recurrent urinary tract infection results from incomplete bladder emptying and urinary stasis.
  phenotype_term:
    preferred_term: Recurrent urinary tract infections
    term:
      id: HP:0000010
      label: Recurrent urinary tract infections
  evidence:
  - reference: ORPHA:2704
    reference_title: "Urofacial syndrome (Orphanet structured-database record)"
    supports: SUPPORT
    evidence_source: OTHER
    snippet: "HP:0000010 | Recurrent urinary tract infections | Very frequent (99-80%)"
    explanation: Orphanet reports recurrent urinary tract infections as very frequent.
  - reference: PMID:23967498
    reference_title: "Urofacial Syndrome."
    supports: SUPPORT
    evidence_source: HUMAN_CLINICAL
    snippet: "bladder emptying can lead to urinary infection"
    explanation: GeneReviews explains why incomplete bladder emptying causes urinary infections.
- name: Urinary incontinence
  frequency: FREQUENT
  description: Urinary incontinence commonly follows poor emptying and detrusor-outflow dyssynergia.
  phenotype_term:
    preferred_term: Urinary incontinence
    term:
      id: HP:0000020
      label: Urinary incontinence
  evidence:
  - reference: ORPHA:2704
    reference_title: "Urofacial syndrome (Orphanet structured-database record)"
    supports: SUPPORT
    evidence_source: OTHER
    snippet: "HP:0000020 | Urinary incontinence | Frequent (79-30%)"
    explanation: Orphanet reports urinary incontinence as frequent.
  - reference: PMID:23967498
    reference_title: "Urofacial Syndrome."
    supports: SUPPORT
    evidence_source: HUMAN_CLINICAL
    snippet: "poor urinary stream and dribbling incontinence"
    explanation: GeneReviews supports dribbling incontinence as part of the bladder phenotype.
- name: Vesicoureteral reflux
  frequency: FREQUENT
  description: Vesicoureteral reflux is a frequent consequence of high-pressure bladder dysfunction.
  phenotype_term:
    preferred_term: Vesicoureteral reflux
    term:
      id: HP:0000076
      label: Vesicoureteral reflux
  evidence:
  - reference: ORPHA:2704
    reference_title: "Urofacial syndrome (Orphanet structured-database record)"
    supports: SUPPORT
    evidence_source: OTHER
    snippet: "HP:0000076 | Vesicoureteral reflux | Frequent (79-30%)"
    explanation: Orphanet reports vesicoureteral reflux as frequent.
  - reference: PMID:23967498
    reference_title: "Urofacial Syndrome."
    supports: SUPPORT
    evidence_source: HUMAN_CLINICAL
    snippet: "vesicoureteral reflux of urine into the ureter and renal pelvis."
    explanation: GeneReviews supports vesicoureteral reflux as an investigation finding.
- name: Hydronephrosis
  frequency: FREQUENT
  description: Hydronephrosis can develop secondary to lower urinary tract dysfunction and reflux.
  phenotype_term:
    preferred_term: Hydronephrosis
    term:
      id: HP:0000126
      label: Hydronephrosis
  evidence:
  - reference: ORPHA:2704
    reference_title: "Urofacial syndrome (Orphanet structured-database record)"
    supports: SUPPORT
    evidence_source: OTHER
    snippet: "HP:0000126 | Hydronephrosis | Frequent (79-30%)"
    explanation: Orphanet reports hydronephrosis as frequent.
- name: Urethral obstruction
  frequency: FREQUENT
  description: Functional outflow obstruction occurs without a fixed anatomic blockage.
  phenotype_term:
    preferred_term: Functional bladder outlet obstruction
    term:
      id: HP:0000796
      label: Urethral obstruction
  evidence:
  - reference: ORPHA:2704
    reference_title: "Urofacial syndrome (Orphanet structured-database record)"
    supports: SUPPORT
    evidence_source: OTHER
    snippet: "HP:0000796 | Urethral obstruction | Frequent (79-30%)"
    explanation: Orphanet reports urethral obstruction as frequent.
  - reference: PMID:30885509
    reference_title: "Lrig2 and Hpse2, mutated in urofacial syndrome, pattern nerves in the urinary bladder."
    supports: SUPPORT
    evidence_source: HUMAN_CLINICAL
    snippet: "causing functional bladder outlet obstruction."
    explanation: The mechanistic paper describes the obstruction as functional bladder outlet obstruction.
- name: Renal insufficiency
  frequency: OCCASIONAL
  description: Renal insufficiency can result from recurrent infection, reflux, and progressive renal damage.
  phenotype_term:
    preferred_term: Renal insufficiency
    term:
      id: HP:0000083
      label: Renal insufficiency
  evidence:
  - reference: ORPHA:2704
    reference_title: "Urofacial syndrome (Orphanet structured-database record)"
    supports: SUPPORT
    evidence_source: OTHER
    snippet: "HP:0000083 | Renal insufficiency | Occasional (29-5%)"
    explanation: Orphanet reports renal insufficiency as occasional.
  - reference: PMID:23967498
    reference_title: "Urofacial Syndrome."
    supports: SUPPORT
    evidence_source: HUMAN_CLINICAL
    snippet: "progressive kidney failure."
    explanation: GeneReviews supports progressive kidney failure as a complication of incomplete emptying.
- name: Constipation
  frequency: FREQUENT
  description: Bowel dysfunction frequently includes constipation.
  phenotype_term:
    preferred_term: Constipation
    term:
      id: HP:0002019
      label: Constipation
  evidence:
  - reference: ORPHA:2704
    reference_title: "Urofacial syndrome (Orphanet structured-database record)"
    supports: SUPPORT
    evidence_source: OTHER
    snippet: "HP:0002019 | Constipation | Frequent (79-30%)"
    explanation: Orphanet reports constipation as frequent.
  - reference: PMID:23967498
    reference_title: "Urofacial Syndrome."
    supports: SUPPORT
    evidence_source: HUMAN_CLINICAL
    snippet: "dysfunction (constipation and/or encopresis)."
    explanation: GeneReviews supports constipation as part of bowel dysfunction.
- name: Bowel incontinence
  frequency: OCCASIONAL
  description: Encopresis or bowel incontinence is part of the bowel-dysfunction spectrum.
  phenotype_term:
    preferred_term: Bowel incontinence
    term:
      id: HP:0002607
      label: Bowel incontinence
  evidence:
  - reference: ORPHA:2704
    reference_title: "Urofacial syndrome (Orphanet structured-database record)"
    supports: SUPPORT
    evidence_source: OTHER
    snippet: "HP:0002607 | Bowel incontinence | Occasional (29-5%)"
    explanation: Orphanet reports bowel incontinence as occasional.
  - reference: PMID:23967498
    reference_title: "Urofacial Syndrome."
    supports: SUPPORT
    evidence_source: HUMAN_CLINICAL
    snippet: "constipation and/or encopresis"
    explanation: GeneReviews supports encopresis as part of bowel dysfunction.
- name: Cryptorchidism
  frequency: FREQUENT
  description: Cryptorchidism is reported among male patients.
  phenotype_term:
    preferred_term: Cryptorchidism
    term:
      id: HP:0000028
      label: Cryptorchidism
  evidence:
  - reference: ORPHA:2704
    reference_title: "Urofacial syndrome (Orphanet structured-database record)"
    supports: SUPPORT
    evidence_source: OTHER
    snippet: "HP:0000028 | Cryptorchidism | Frequent (79-30%)"
    explanation: Orphanet reports cryptorchidism as frequent.
- name: Hypertension
  frequency: OCCASIONAL
  description: Hypertension can occur as a secondary renal complication.
  phenotype_term:
    preferred_term: Hypertension
    term:
      id: HP:0000822
      label: Hypertension
  evidence:
  - reference: ORPHA:2704
    reference_title: "Urofacial syndrome (Orphanet structured-database record)"
    supports: SUPPORT
    evidence_source: OTHER
    snippet: "HP:0000822 | Hypertension | Occasional (29-5%)"
    explanation: Orphanet reports hypertension as occasional.
- name: Polydipsia
  frequency: OCCASIONAL
  description: Polydipsia is an occasional reported feature.
  phenotype_term:
    preferred_term: Polydipsia
    term:
      id: HP:0001959
      label: Polydipsia
  evidence:
  - reference: ORPHA:2704
    reference_title: "Urofacial syndrome (Orphanet structured-database record)"
    supports: SUPPORT
    evidence_source: OTHER
    snippet: "HP:0001959 | Polydipsia | Occasional (29-5%)"
    explanation: Orphanet reports polydipsia as occasional.
biochemical: []
genetic:
- name: HPSE2
  association: Causal biallelic loss-of-function variant
  gene_term:
    preferred_term: HPSE2
    term:
      id: hgnc:18374
      label: HPSE2
  notes: >
    HPSE2 encodes inactive heparanase-2. Biallelic deletions, nonsense,
    frameshift, splice, and missense variants have been reported in Ochoa
    syndrome, with HPSE2 accounting for most genetically solved families.
  evidence:
  - reference: ORPHA:2704
    reference_title: "Urofacial syndrome (Orphanet structured-database record)"
    supports: SUPPORT
    evidence_source: OTHER
    snippet: "HPSE2 | heparanase 2 (inactive) | hgnc:18374 | Disease-causing germline mutation(s) in"
    explanation: Orphanet lists HPSE2 as a disease-causing gene for urofacial syndrome.
  - reference: PMID:20560210
    reference_title: "Mutations in HPSE2 cause urofacial syndrome."
    supports: SUPPORT
    evidence_source: HUMAN_CLINICAL
    snippet: "frameshift mutations in five further unrelated families"
    explanation: The HPSE2 discovery paper describes disease-causing HPSE2 variant classes.
  - reference: PMID:35812751
    reference_title: "Expanding the HPSE2 Genotypic Spectrum in Urofacial Syndrome, A Disease Featuring a Peripheral Neuropathy of the Urinary Bladder."
    supports: SUPPORT
    evidence_source: HUMAN_CLINICAL
    snippet: "Biallelic variants in HPSE2, coding for the secreted"
    explanation: This larger genotype paper supports HPSE2 as a major causal gene.
- name: LRIG2
  association: Causal biallelic loss-of-function variant
  gene_term:
    preferred_term: LRIG2
    term:
      id: hgnc:20889
      label: LRIG2
  notes: >
    LRIG2 encodes leucine-rich repeats and immunoglobulin-like domains 2.
    Biallelic LRIG2 variants cause a subset of Ochoa syndrome and may also
    contribute to urinary tract-limited bladder outlet disease.
  evidence:
  - reference: ORPHA:2704
    reference_title: "Urofacial syndrome (Orphanet structured-database record)"
    supports: SUPPORT
    evidence_source: OTHER
    snippet: "LRIG2 | leucine rich repeats and immunoglobulin like domains 2 | hgnc:20889 | Disease-causing germline mutation(s) in"
    explanation: Orphanet lists LRIG2 as a disease-causing gene for urofacial syndrome.
  - reference: PMID:23313374
    reference_title: "LRIG2 mutations cause urofacial syndrome."
    supports: SUPPORT
    evidence_source: HUMAN_CLINICAL
    snippet: "individuals have biallelic mutations in LRIG2"
    explanation: The LRIG2 discovery paper directly supports LRIG2 as a causal gene.
  - reference: PMID:30885509
    reference_title: "Lrig2 and Hpse2, mutated in urofacial syndrome, pattern nerves in the urinary bladder."
    supports: SUPPORT
    evidence_source: HUMAN_CLINICAL
    snippet: "Biallelic putative null variants of LRIG2 have been reported in a subset of families with UFS."
    explanation: This later study supports LRIG2 causal variants and related bladder phenotypes.
environmental: []
treatments:
- name: Bladder-directed pharmacotherapy
  description: >
    Anticholinergic and alpha-1 adrenergic blocking medications can reduce high
    bladder pressure and improve voiding.
  treatment_term:
    preferred_term: Pharmacotherapy
    term:
      id: NCIT:C15986
      label: Pharmacotherapy
    therapeutic_agent:
    - preferred_term: anticholinergic agent
      term:
        id: NCIT:C66880
        label: Anticholinergic Agent
  target_phenotypes:
  - preferred_term: Neurogenic bladder-like voiding dysfunction
    term:
      id: HP:0000011
      label: Neurogenic bladder
  target_mechanisms:
  - target: Functional bladder outlet obstruction and incomplete emptying
    treatment_effect: MODULATES
    description: Pharmacotherapy aims to lower bladder pressure and improve urine emptying.
    evidence:
    - reference: PMID:23967498
      reference_title: "Urofacial Syndrome."
      supports: SUPPORT
      evidence_source: HUMAN_CLINICAL
      snippet: "Anticholinergic and alpha-1 adrenergic"
      explanation: GeneReviews supports medication targeting bladder pressure and voiding.
  evidence:
  - reference: PMID:23967498
    reference_title: "Urofacial Syndrome."
    supports: SUPPORT
    evidence_source: HUMAN_CLINICAL
    snippet: "Anticholinergic and alpha-1 adrenergic"
    explanation: GeneReviews lists these medications for management of urinary manifestations.
- name: Intermittent catheterization or vesicostomy
  description: >
    Catheterization or vesicostomy can improve bladder drainage when medication
    alone does not adequately empty the bladder.
  treatment_term:
    preferred_term: catheterization
    term:
      id: MAXO:0001389
      label: catheterization
  target_phenotypes:
  - preferred_term: Neurogenic bladder-like voiding dysfunction
    term:
      id: HP:0000011
      label: Neurogenic bladder
  target_mechanisms:
  - target: Functional bladder outlet obstruction and incomplete emptying
    treatment_effect: MODULATES
    description: Bladder drainage reduces residual urine and infection risk.
    evidence:
    - reference: PMID:23967498
      reference_title: "Urofacial Syndrome."
      supports: SUPPORT
      evidence_source: HUMAN_CLINICAL
      snippet: "catheterization per urethra or through vesicostomy."
      explanation: GeneReviews supports catheterization or vesicostomy as bladder-drainage management.
  evidence:
  - reference: PMID:23967498
    reference_title: "Urofacial Syndrome."
    supports: SUPPORT
    evidence_source: HUMAN_CLINICAL
    snippet: "catheterization per urethra or through vesicostomy."
    explanation: GeneReviews lists catheterization or vesicostomy as management options.
- name: Lubricant eye drops and nighttime eye ointment
  description: >
    Lubricant eye drops during the day and eye ointment at night can protect the
    ocular surface in nocturnal lagophthalmos.
  treatment_term:
    preferred_term: supportive care
    term:
      id: MAXO:0000950
      label: supportive care
  target_phenotypes:
  - preferred_term: Nocturnal lagophthalmos
    term:
      id: HP:0030001
      label: Lagophthalmos
    temporality: NOCTURNAL
  evidence:
  - reference: PMID:23967498
    reference_title: "Urofacial Syndrome."
    supports: SUPPORT
    evidence_source: HUMAN_CLINICAL
    snippet: "Lubricant eye drops during the day and eye"
    explanation: GeneReviews recommends ocular lubrication for nocturnal lagophthalmos.
- name: Antibiotic therapy for urinary tract infection
  description: Rapid antibiotic treatment is used for acute urinary tract infections.
  treatment_term:
    preferred_term: Antibiotic Therapy
    term:
      id: NCIT:C15620
      label: Antibiotic Therapy
  target_phenotypes:
  - preferred_term: Recurrent urinary tract infections
    term:
      id: HP:0000010
      label: Recurrent urinary tract infections
  evidence:
  - reference: PMID:23967498
    reference_title: "Urofacial Syndrome."
    supports: SUPPORT
    evidence_source: HUMAN_CLINICAL
    snippet: "Rapid and complete antibiotic therapy"
    explanation: GeneReviews supports prompt antibiotic treatment for acute urinary tract infections.
- name: Kidney transplantation for severe kidney failure
  description: >
    Long-term dialysis and kidney transplantation may be required when urinary
    tract complications progress to severe kidney failure.
  treatment_term:
    preferred_term: Kidney Transplantation
    term:
      id: NCIT:C15265
      label: Kidney Transplantation
  target_phenotypes:
  - preferred_term: Renal insufficiency
    term:
      id: HP:0000083
      label: Renal insufficiency
  evidence:
  - reference: PMID:23967498
    reference_title: "Urofacial Syndrome."
    supports: SUPPORT
    evidence_source: HUMAN_CLINICAL
    snippet: "dialysis and kidney transplantation."
    explanation: GeneReviews supports kidney transplantation for severe kidney failure.
references:
- reference: ORPHA:2704
  title: Urofacial syndrome
  found_in:
  - Ochoa_Syndrome-deep-research-cyberian-codex.md
  findings: []
- reference: PMID:23967498
  title: Urofacial Syndrome.
  found_in:
  - Ochoa_Syndrome-deep-research-cyberian-codex.md
  findings: []
- reference: PMID:20560210
  title: Mutations in HPSE2 cause urofacial syndrome.
  found_in:
  - Ochoa_Syndrome-deep-research-cyberian-codex.md
  findings: []
- reference: PMID:23313374
  title: LRIG2 mutations cause urofacial syndrome.
  found_in:
  - Ochoa_Syndrome-deep-research-cyberian-codex.md
  findings: []
- reference: PMID:30885509
  title: Lrig2 and Hpse2, mutated in urofacial syndrome, pattern nerves in the urinary bladder.
  found_in:
  - Ochoa_Syndrome-deep-research-cyberian-codex.md
  findings: []
- reference: PMID:35812751
  title: "Expanding the HPSE2 Genotypic Spectrum in Urofacial Syndrome, A Disease Featuring a Peripheral Neuropathy of the Urinary Bladder."
  found_in:
  - Ochoa_Syndrome-deep-research-cyberian-codex.md
  findings: []
- reference: PMID:23832138
  title: "Urofacial syndrome: a genetic and congenital disease of aberrant urinary bladder innervation."
  found_in:
  - Ochoa_Syndrome-deep-research-cyberian-codex.md
  findings: []
notes: >-
  Curation emphasizes the direct ORPHA:2704 to MONDO:0000463 mapping and the
  compact mechanism from HPSE2/LRIG2 dysfunction to aberrant urinary-bladder
  autonomic innervation, functional outlet obstruction, urinary stasis/reflux,
  and renal injury. The hallmark abnormal facial expression is mapped to
  HP:0034979 Facial synkinesis as the closest available HPO term, while the
  preferred term preserves the clinically recognized inverted-expression
  phenotype.
📚

References & Deep Research

References

7
ORPHA:2704
Urofacial syndrome
No top-level findings curated for this source.
PMID:23967498
Urofacial Syndrome.
No top-level findings curated for this source.
PMID:20560210
Mutations in HPSE2 cause urofacial syndrome.
No top-level findings curated for this source.
PMID:23313374
LRIG2 mutations cause urofacial syndrome.
No top-level findings curated for this source.
PMID:30885509
Lrig2 and Hpse2, mutated in urofacial syndrome, pattern nerves in the urinary bladder.
No top-level findings curated for this source.
PMID:35812751
Expanding the HPSE2 Genotypic Spectrum in Urofacial Syndrome, A Disease Featuring a Peripheral Neuropathy of the Urinary Bladder.
No top-level findings curated for this source.
PMID:23832138
Urofacial syndrome: a genetic and congenital disease of aberrant urinary bladder innervation.
No top-level findings curated for this source.

Deep Research

1
Cyberian Codex ▸
Evidence Basis
codex-local-synthesis 7 citations 2026-05-03T13:15:24Z

Evidence Basis

This local Codex synthesis uses the generated Orphanet structured record for ORPHA:2704 and the PubMed caches integrated into the YAML. Falcon and OpenAI provider attempts both timed out without artifacts, so the curated YAML is based on local review of the deterministic evidence caches listed below.

Core Disease Mechanism

  • Ochoa syndrome maps directly to MONDO:0000463 through ORPHA:2704, which uses the Orphanet preferred name Urofacial syndrome and lists Ochoa syndrome as a synonym.
  • Orphanet records autosomal recessive inheritance and lists HPSE2 and LRIG2 as disease-causing genes.
  • HPSE2 encodes inactive heparanase-2 and LRIG2 encodes leucine-rich repeats and immunoglobulin-like domains 2; both proteins have evidence of expression or localization in developing urinary-bladder nerves.
  • Discovery studies identify HPSE2 and LRIG2 pathogenic variants in affected families, while GeneReviews summarizes biallelic variants in either gene as a route to molecular diagnosis.
  • Mouse and human-development studies support a peripheral neurodevelopmental model: Lrig2 or Hpse2 mutant bladders have abnormal nerve density, reduced outflow-tract nitrergic innervation, and dysfunctional voiding.

Clinical Interpretation

  • The syndrome is defined clinically by urinary bladder voiding dysfunction and abnormal facial movement with expression. The YAML maps the abnormal co-contraction component to HP:0034979 Facial synkinesis while retaining the clinical preferred term for the inverted smile/grimace phenotype.
  • Functional bladder outlet obstruction can present prenatally as megacystis and postnatally produces poor stream, residual urine, dribbling incontinence, and recurrent urinary tract infection risk.
  • Urinary stasis and high-pressure dysfunction lead to vesicoureteral reflux, hydronephrosis, renal insufficiency, and in severe cases progressive kidney failure.
  • Constipation and encopresis are part of the bowel-dysfunction spectrum, and nocturnal lagophthalmos has also been documented.
  • Orphanet frequency annotations provide structured support for the HPO-coded phenotype set, including recurrent urinary tract infections, urinary incontinence, vesicoureteral reflux, hydronephrosis, urethral obstruction, constipation, bowel incontinence, cryptorchidism, renal insufficiency, hypertension, and polydipsia.

Treatment-Relevant Mechanism

  • Management is supportive and directed at preserving bladder emptying, preventing infection, and protecting kidney function.
  • GeneReviews supports anticholinergic and alpha-1 adrenergic blocking medications to reduce bladder pressure and improve voiding.
  • Catheterization or vesicostomy can improve bladder drainage when medication is insufficient.
  • Acute urinary tract infections require rapid antibiotic therapy.
  • Severe kidney failure may require dialysis or kidney transplantation.

YAML Integration Notes

  • The pathophysiology graph is intentionally compact: biallelic HPSE2/LRIG2 dysfunction, aberrant bladder autonomic innervation, functional bladder outlet obstruction with incomplete emptying, urinary stasis/reflux/renal injury, and the hallmark abnormal facial movement outcome.
  • Phenotypes are anchored primarily to ORPHA:2704 frequency annotations and reinforced by GeneReviews or mechanistic literature where useful.
  • Genetics represent both causal genes separately, while the disease-level mechanism is modeled as a shared peripheral-neurodevelopmental pathway.

Citation Inventory

  • ORPHA:2704
  • PMID:23967498
  • PMID:20560210
  • PMID:23313374
  • PMID:30885509
  • PMID:35812751
  • PMID:23832138