TSTD2

Chr 9

thiosulfate sulfurtransferase like domain containing 2

Also known as: C9orf97

The protein is predicted to have transferase activity, though its specific cellular function remains unclear. Mutations cause autosomal recessive intellectual disability with language impairment and autistic behaviors, typically manifesting in early childhood. This gene is not highly constrained against loss-of-function variants, which is consistent with the recessive inheritance pattern observed in affected individuals.

ResearchSummary from RefSeq
LOEUF 1.19
Clinical SummaryTSTD2
Population Constraint (gnomAD)
Low constraint (pLI 0.00) — loss-of-function variants are relatively tolerated in the population.

Population Genetics & Constraint

gnomAD v4 — loss-of-function & missense intolerance

Tolerant — LoF & missense variants common in population
LoF Constraint
1.19LOEUF
pLI 0.000
Z-score 0.84
OE 0.81 (0.571.19)
Tolerant

Highly tolerant — LoF variants common in population

Missense Constraint
0.02Z-score
OE missense 1.00 (0.901.10)
277 obs / 278.2 exp
Tolerant

Mild missense constraint

Observed / Expected Ratios
LoF OE0.81 (0.571.19)
00.351.4
Missense OE1.00 (0.901.10)
00.61.4
Synonymous OE0.92
01.21.6
LoF obs/exp: 19 / 23.4Missense obs/exp: 277 / 278.2Syn Z: 0.64

ClinVar Variant Classifications

0 submitted variants in ClinVar

Protein Context — Lollipop Plot

TSTD2 · 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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