FCHSD1

Chr 5

FCH and double SH3 domains 1

Also known as: NWK2

NCBI Gene: 89848ENSG00000197948UniProt: Q86WN1

Predicted to enable lipid binding activity. Predicted to be involved in neuromuscular synaptic transmission and positive regulation of actin filament polymerization. Predicted to act upstream of or within several processes, including import into nucleus; inflammatory response; and response to hydrogen peroxide. Predicted to be located in cuticular plate. Predicted to be part of protein-containing complex. Predicted to be active in cytosol; neuromuscular junction; and recycling endosome. [provided by Alliance of Genome Resources, Apr 2025]

166
ClinVar variants
11
Pathogenic / LP
0.00
pLI score
0
Active trials
Clinical Summary— FCHSD1
⚡
Population Constraint (gnomAD)
Low constraint (pLI 0.00) — loss-of-function variants are relatively tolerated in the population.
📋
ClinVar Variants
11 Pathogenic / Likely Pathogenic· 151 VUS of 166 total submissions

Population Genetics & Constraint

gnomAD v4 — loss-of-function & missense intolerance

gnomAD
Tolerant — LoF & missense variants common in population
LoF Constraint?LOEUF (Loss-of-function Observed/Expected Upper bound Fraction) is the upper bound of the 90% CI for LoF OE — the preferred gnomAD v4 metric. Lower = more intolerant to LoF. LOEUF < 0.35 = highly constrained.
1.29LOEUF
pLI 0.000
Z-score -0.07
OE 1.01 (0.80–1.29)
Tolerant

Highly tolerant — LoF variants common in population

Missense Constraint?Missense Z-score: standard deviations fewer missense variants observed vs. expected. Z > 3.09 (p < 0.001) = gene does not tolerate missense variation. OE missense < 0.6 is also considered constrained.
0.80Z-score
OE missense 0.89 (0.81–0.97)
358 obs / 403.1 exp
Tolerant

Mild missense constraint

Observed / Expected Ratios?Shaded band = 90% confidence interval. Vertical tick = point estimate. Grey threshold line = gnomAD constraint cutoff for that variant class.
LoF OE?Ratio of observed to expected LoF variants. Upper CI bound (LOEUF) ≤ 0.35 = strong LoF constraint signal.1.01 (0.80–1.29)
0≤0.351.4
Missense OE?Ratio of observed to expected missense variants. OE ≤ 0.6 = fewer missense variants than expected by chance.0.89 (0.81–0.97)
0≤0.61.4
Synonymous OE?Control metric — synonymous variants are largely neutral and expected near OE = 1.0. Significant deviation may indicate annotation issues.0.80
0≤1.21.6
LoF obs/exp: 47 / 46.5Missense obs/exp: 358 / 403.1Syn Z: 1.97

ClinVar Variant Classifications

166 submitted variants in ClinVar

ClinVar

Classification Summary

Pathogenic11
VUS151
Likely Benign4
11
Pathogenic
151
VUS
4
Likely Benign

Curated Variants Distribution

Classified variants from ClinVar · 5 ACMG categories

ClassificationLoFMissense + InframeNon-codingSynonymousTotal
Pathogenic
0
0
11
0
11
Likely Pathogenic
0
0
0
0
0
VUS
0
148
3
0
151
Likely Benign
0
2
1
1
4
Benign
0
0
0
0
0
Total0150151166

LoF = frameshift, stop gained/lost, canonical splice · Counts from ClinVar esearch · Updated hourly

View in ClinVar →

Protein Context — Lollipop Plot

FCHSD1 · protein map & ClinVar variants

Showing all ClinVar variants across the protein. Search a specific variant to highlight its position.

OMIM — Genotype-Phenotype Relationships

1 OMIM entry

OMIM
Clinical Literature
Landmark / reviewRecent case evidence
Key Publications
Landmark & review papers · by relevance
PubMed
Top 10 resultsSearch PubMed ↗
Recent Gene-Specific Literature
Gene in title · MEDLINE · newest first
Europe PMC
Top 5 resultsSearch Europe PMC ↗

Clinical Trials

Active and recruiting trials from ClinicalTrials.gov

ClinicalTrials.gov

No active trials found for this gene.

Search ClinicalTrials.gov →

External Resources

Links to major genomics databases and tools