TMSB15B

Chr X

thymosin beta 15B

Also known as: TMSL8, Tbeta15b

The protein binds and sequesters actin monomers to regulate cytoskeleton organization and inhibit actin polymerization, and is involved in cell migration. Currently, no human diseases have been definitively associated with TMSB15B mutations in the medical literature. The gene shows moderate tolerance to loss-of-function variants based on population genetics data.

Summary from RefSeq, UniProt
Research Assistant →
0
Active trials
1
Pubs (1 yr)
0
P/LP submissions
P/LP missense
1.73
LOEUF
GOF
Mechanism· predicted
Clinical SummaryTMSB15B
Population Constraint (gnomAD)
Constrained for loss-of-function variants (OE-LoF 0.00) despite low pLI — interpret in context.

Population Genetics & Constraint

gnomAD v4 — loss-of-function & missense intolerance

Tolerant — LoF & missense variants common in population
LoF Constraint
1.73LOEUF
pLI 0.389
Z-score 0.91
OE 0.00 (0.001.73)
Tolerant

Highly tolerant — LoF variants common in population

Missense Constraint
-0.72Z-score
OE missense 1.56 (1.081.93)
21 obs / 13.5 exp
Tolerant

Tolerant to missense variation

Observed / Expected Ratios
LoF OE0.00 (0.001.73)
00.351.4
Missense OE1.56 (1.081.93)
00.61.4
Synonymous OE0.34
01.21.6
LoF obs/exp: 0 / 1.0Missense obs/exp: 21 / 13.5Syn Z: 1.25
DN
0.4190th %ile
GOF
0.6639th %ile
LOF
0.3843th %ile

The highest-scoring mechanism for this gene is gain-of-function.

GOFprediction above median

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

0 submitted variants in ClinVar

Protein Context — Lollipop Plot

TMSB15B · protein map & ClinVar variants

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

3D Protein StructureAlphaFold

Clinical Trials

Active and recruiting trials from ClinicalTrials.gov

No active trials found for this gene.

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Clinical Literature
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Recent Gene-Specific Literature
Gene in title · MEDLINE · newest first
Europe PMC

No open access results found