| domain | evidence-backed finding | suggested ontology terms/IDs | evidence type/strength |
|---|---|---|---|
| disease label | ZNF407-related neurodevelopmental disorder is an ultra-rare Mendelian disorder associated with biallelic pathogenic variation in **ZNF407**; Open Targets links ZNF407 to **MONDO:0859198 short stature, impaired intellectual development, microcephaly, hypotonia, and ocular anomalies** (pqac-00000013) | MONDO:0859198 | Human disease-gene aggregation + primary case report; moderate for disease validity, limited cohort size |
| inheritance | Available human evidence supports **autosomal recessive** inheritance with affected individuals homozygous for ZNF407 variants in a consanguineous family; unaffected relatives/carrier fetus were heterozygous or unaffected (pqac-00000000, pqac-00000001, pqac-00000008) | Autosomal recessive inheritance; biallelic ZNF407 | Primary human segregation evidence; strong within one pedigree |
| causal gene/variant | Foundational report identified **ZNF407 c.C5054G (p.S1685W)** at 18q23, absent from public variant databases available at the time and from 400 ethnically matched control chromosomes; later literature cited additional biallelic ZNF407 cases and other missense alleles (pqac-00000000, pqac-00000002, pqac-00000007, pqac-00000009) | ZNF407 | Primary human molecular evidence for p.S1685W; expanded allelic spectrum supported by secondary/database evidence |
| neurodevelopmental phenotype | Severe developmental/cognitive disability was present in both reported brothers: delayed sitting, delayed independent walking, delayed/very limited speech, and lack of toilet training at assessment (pqac-00000001, pqac-00000011) | HP:0001263 Global developmental delay; HP:0001249 Intellectual disability; HP:0000750 Delayed speech and language development; HP:0001270 Motor delay | Primary human clinical evidence; strong for original family |
| growth phenotype | Both boys had postnatal growth restriction with height below the 3rd percentile and weight around the 3rd percentile; failure-to-thrive was emphasized in the abstract (pqac-00000010, pqac-00000011) | HP:0004322 Short stature; HP:0001508 Failure to thrive | Primary human clinical evidence; strong for 2/2 original cases |
| neurologic phenotype | Hypotonia with exaggerated deep tendon reflexes was reported in both affected individuals; gait was awkward with bent knees in the older child (pqac-00000001, pqac-00000011) | HP:0001252 Hypotonia; HP:0006808 Increased deep tendon reflexes; HP:0002317 Unsteady gait | Primary human clinical evidence; strong for original family |
| ocular phenotype | Bilateral ptosis, epicanthic folds, and strabismus were reported; later disease naming also includes ocular anomalies (pqac-00000001, pqac-00000011, pqac-00000013) | HP:0000508 Ptosis; HP:0000286 Epicanthus; HP:0000486 Strabismus | Primary human clinical evidence + curated disease aggregation; moderate |
| craniofacial phenotype | Recurrent facial dysmorphism included synophrys, midface hypoplasia, downturned mouth corners, thin upper vermilion border, and prominent ears with overfolding/absent lobules (pqac-00000001, pqac-00000008, pqac-00000010) | HP:0000664 Synophrys; HP:0000340 Short philtrum/not established; HP:0011800 Midface retrusion; HP:0002714 Downturned corners of mouth; HP:0010807 Thin upper vermilion border; HP:0000411 Prominent ear | Primary human clinical evidence; moderate-strong |
| musculoskeletal phenotype | Skeletal findings included bilateral 5th-finger camptodactyly, short 4th metatarsals with overriding toes, proximal thumb insertion, persistent fetal pads, limited knee mobility/awkward bent-knee gait, femoral subluxation, dysplastic acetabulum, and mild kyphosis (pqac-00000010, pqac-00000011) | HP:0004209 Camptodactyly of finger; HP:0010511 Short metatarsal; HP:0001841 2-4 toe syndactyly/not established; HP:0002808 Kyphosis; HP:0001382 Joint hypermobility/limited mobility not firmly assigned | Primary human clinical evidence; moderate |
| neuroimaging and ancillary testing | Brain MRI was normal in both reported cases; karyotype, array CGH, echocardiogram, abdominal ultrasound, and hearing testing were normal where performed (pqac-00000001, pqac-00000008, pqac-00000011) | Normal brain MRI; no specific ontology term required | Primary human diagnostic evidence; moderate |
| molecular mechanism | The p.S1685W substitution lies in the linker between zinc fingers 18 and 19, disrupts an H-bond with E1683, increases linker flexibility, and is predicted to reduce zinc finger-DNA complex formation and downstream transcriptional control during fetal brain development (pqac-00000000, pqac-00000007, pqac-00000009, pqac-00000010) | GO:0003700 DNA-binding transcription factor activity; GO:0006355 regulation of DNA-templated transcription | Primary in silico structural modeling anchored to human variant; moderate mechanistic evidence |
| gene/protein biology | ZNF407 is a multi-zinc-finger transcription factor with nuclear relevance; mRNA/protein expression was reported across multiple tissues including adult, embryonic, and fetal CNS/PNS in the 2014 paper (pqac-00000002, pqac-00000009) | GO:0005634 nucleus; GO:0003677 DNA binding | Mixed evidence (human expression/database statements); moderate |
| ortholog/functional biology | Mouse **Zfp407** is nuclear in adipocytes, participates in a **PPARγ/RXRα** complex, and showed **7,313** ChIP-seq peaks, with ~50.4% overlap with PPARγ peaks and 64.8% overlap among the top 1,000 peaks; this supports transcription-factor function but is not a disease-specific neural model (pqac-00000004, pqac-00000005, pqac-00000006) | GO:0005634 nucleus; GO:0006351 transcription, DNA-templated | Non-disease ortholog/cellular evidence; supportive but indirect for neurodevelopmental disorder |
| diagnosis | Best-supported diagnosis is genomic: exome/genome sequencing in patients with syndromic developmental delay/intellectual disability, followed by segregation testing; homozygosity mapping was informative in the consanguineous family, while karyotype/CMA/MRI were non-diagnostic in the original cases (pqac-00000008, pqac-00000010, pqac-00000011) | HP:0001263 Global developmental delay; ZNF407 single-gene analysis/WES | Primary human diagnostic workflow evidence; moderate |
| management | No disease-specific therapy or trials were identified. Current care is supportive: developmental therapies, rehabilitation, educational support, orthopedic monitoring/intervention as needed, and clinical genetics follow-up with reproductive counseling (pqac-00000011) | Supportive care; genetic counseling | Inference from phenotype + absence of disease-specific interventional evidence; low-directness but clinically standard |
| prevention/family planning | Because evidence supports autosomal recessive inheritance, recurrence-risk counseling, carrier testing of relatives, prenatal diagnosis, and possibly preimplantation genetic testing are relevant where a familial pathogenic variant is known; prenatal testing identified an unaffected heterozygous fetus in the original pedigree (pqac-00000008) | Genetic counseling; carrier testing; prenatal diagnosis | Primary pedigree evidence + standard Mendelian practice; moderate |
| epidemiology | No robust prevalence or incidence estimates were identified; evidence indicates an ultra-rare disorder with only a very small number of published families/patients (pqac-00000000, pqac-00000013) | Rare disease | Sparse human literature; low |
| prognosis | Long-term natural history, survival, adult outcomes, penetrance, and genotype-phenotype correlations remain poorly defined; available childhood data suggest chronic, lifelong neurodevelopmental disability without evidence of neurodegeneration in the original report (pqac-00000011) | Chronic neurodevelopmental disorder | Very limited longitudinal evidence; low |
| major evidence gaps | Major gaps include: lack of large cohorts, no validated prevalence estimates, no standardized diagnostic criteria, no disease-specific biomarkers, no neural iPSC/animal disease model, no treatment trials, and limited access to the 2020 expanded cohort details despite bibliographic confirmation (pqac-00000013) | Evidence gap annotation | Strong confidence in absence of evidence from searches; low for any omitted unpublished data |


*Table: This table condenses the strongest currently retrievable evidence for ZNF407-related neurodevelopmental disorder into knowledge-base-ready findings. It highlights core disease definition, inheritance, phenotype, mechanism, diagnostic approach, management, and the most important current evidence gaps.*