SFTA3
Chr 14surfactant associated 3
Also known as: NANCI, PAHRF, SFTPH, SP-H, SPH
SFTA3 encodes a putative surfactant protein that may function in wound healing and reduction of surface tension at the ocular surface. The gene shows relatively low constraint to loss-of-function variation based on population genetics data. Currently, no definitive human diseases have been established from mutations in this gene.
Population Genetics & Constraint
gnomAD v4 — loss-of-function & missense intolerance
Typical tolerance to LoF variation
Mild missense constraint
The highest-scoring mechanism for this gene is gain-of-function.
Note: In-silico variant effect predictors (SIFT, PolyPhen, REVEL, CADD) may underestimate pathogenicity of missense variants in genes with GOF or DN mechanisms. Consider functional evidence and clinical context.
Predictions from Badonyi M, Marsh JA. PLoS ONE. 2024;19(8):e0307312.
ClinVar Variant Classifications
406 submitted variants in ClinVar
Classification Summary
Curated Variants Distribution
Classified variants from ClinVar · 5 ACMG categories
| Classification | LoF | Missense + Inframe | Non-coding | Synonymous | Total |
|---|---|---|---|---|---|
Pathogenic | 41 | 5 | 51 | 0 | 97 |
Likely Pathogenic | 24 | 19 | 14 | 0 | 57 |
VUS | 2 | 111 | 24 | 7 | 144 |
Likely Benign | 0 | 3 | 15 | 52 | 70 |
Benign | 0 | 1 | 11 | 2 | 14 |
Conflicting | — | 15 | |||
| Total | 67 | 139 | 115 | 61 | 397 |
LoF = frameshift, stop gained/lost, canonical splice · Counts from ClinVar esearch · Updated hourly
View in ClinVar →Protein Context — Lollipop Plot
SFTA3 · protein map & ClinVar variants
Showing all ClinVar variants across the protein. Search a specific variant to highlight its position.
External Resources
Links to major genomics databases and tools
Clinical Trials
Active and recruiting trials from ClinicalTrials.gov
No active trials found for this gene.
Search ClinicalTrials.gov →External Resources
Links to major genomics databases and tools