TLCD2

Chr 17

TLC domain containing 2

Regulates the composition and fluidity of the plasma membrane (PubMed:30509349). Inhibits the incorporation of membrane-fluidizing phospholipids containing omega-3 long-chain polyunsaturated fatty acids (LCPUFA) and thereby promotes membrane rigidity (PubMed:30509349). Does not appear to have any effect on LCPUFA synthesis (PubMed:30509349)

OMIMResearchGenerating clinical summary…
MultiplemechanismLOEUF 1.70
Clinical SummaryTLCD2
Population Constraint (gnomAD)
Low constraint (pLI 0.00) — loss-of-function variants are relatively tolerated in the population.
Some data sources returned errors (1)

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Population Genetics & Constraint

gnomAD v4 — loss-of-function & missense intolerance

Tolerant — LoF & missense variants common in population
LoF Constraint?
1.70LOEUF
pLI 0.000
Z-score 0.05
OE 0.98 (0.571.70)
Tolerant

Highly tolerant — LoF variants common in population

Missense Constraint?
0.69Z-score
OE missense 0.84 (0.730.97)
125 obs / 148.8 exp
Tolerant

Mild missense constraint

Observed / Expected Ratios?
LoF OE?0.98 (0.571.70)
00.351.4
Missense OE?0.84 (0.730.97)
00.61.4
Synonymous OE?0.86
01.21.6
LoF obs/exp: 8 / 8.2Missense obs/exp: 125 / 148.8Syn Z: 0.88

This gene — mechanism propensity

DN
0.7326th %ile
GOF
0.73top 25%
LOF
0.2775th %ile

This gene has evidence for multiple mechanisms of pathogenicity (gain-of-function and dominant-negative). Both the Badonyi & Marsh prediction and the broader genomic evidence point to gain-of-function as the predominant mechanism. Different variants in this gene may act through different mechanisms — interpret in context of the specific variant.

GOFprediction above median
DNprediction 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

TLCD2 · protein map & ClinVar variants

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

Clinical Trials

Active and recruiting trials from ClinicalTrials.gov

No active trials found for this gene.

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