TMEM240

Chr 1

transmembrane protein 240

Also known as: C1orf70, SCA21

This gene encodes a transmembrane-domain containing protein found in the brain and cerebellum. Mutations in this gene result in spinocerebellar ataxia 21. [provided by RefSeq, Dec 2014]

ResearchGenerating clinical summary…

Primary Disease Associations & Inheritance

UniProtSpinocerebellar ataxia 21

Clinical highlights

Interpreting a novel variant
Loss of function is the curated mechanism (Gene2Phenotype) and the gene is intolerant of it in the population — truncating, frameshift and canonical splice variants carry more prior weight here than missense.Curated gene-level mechanism — a prior for triage, not a per-variant call.
1
Active trials
4
Pubs (1 yr)
P/LP submissions
P/LP missense
0.87
LOEUF
LOF*
Mechanism· G2P
Some data sources returned errors (1)

omim: Error: OMIM fetch failed: 429

Population Genetics & Constraint

gnomAD v4 — loss-of-function & missense intolerance

Tolerant — LoF & missense variants common in population
LoF Constraint?
0.87LOEUF
pLI 0.229
Z-score 1.80
OE 0.28 (0.110.87)
Tolerant

Typical tolerance to LoF variation

Missense Constraint?
1.55Z-score
OE missense 0.58 (0.470.72)
62 obs / 107.0 exp
Tolerant

Mild missense constraint

Observed / Expected Ratios?
LoF OE?0.28 (0.110.87)
00.351.4
Missense OE?0.58 (0.470.72)
00.61.4
Synonymous OE?1.10
01.21.6
LoF obs/exp: 2 / 7.2Missense obs/exp: 62 / 107.0Syn Z: -0.55

ClinVar Variant Classifications

0 submitted variants in ClinVar

Protein Context — Lollipop Plot

TMEM240 · protein map & ClinVar variants

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