PDLIM3

Chr 4

PDZ and LIM domain 3

Also known as: ALP

The protein encoded by this gene contains a PDZ domain and a LIM domain, indicating that it may be involved in cytoskeletal assembly. In support of this, the encoded protein has been shown to bind the spectrin-like repeats of alpha-actinin-2 and to colocalize with alpha-actinin-2 at the Z lines of skeletal muscle. Alternatively spliced transcript variants encoding multiple isoforms have been observed for this gene. Aberrant alternative splicing of this gene may play a role in myotonic dystrophy. [provided by RefSeq, Apr 2012]

OMIMResearchGenerating clinical summary…
MultiplemechanismLOEUF 1.22
Clinical SummaryPDLIM3
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Gene-Disease Validity (ClinGen)
hypertrophic cardiomyopathy · ADLimited

Limited evidence — not for standalone diagnostic reporting

2 total gene-disease associations curated

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?
1.22LOEUF
pLI 0.000
Z-score 0.92
OE 0.75 (0.481.22)
Tolerant

Highly tolerant — LoF variants common in population

Missense Constraint?
-0.02Z-score
OE missense 1.00 (0.901.12)
224 obs / 223.1 exp
Tolerant

Tolerant to missense variation

Observed / Expected Ratios?
LoF OE?0.75 (0.481.22)
00.351.4
Missense OE?1.00 (0.901.12)
00.61.4
Synonymous OE?1.07
01.21.6
LoF obs/exp: 12 / 16.0Missense obs/exp: 224 / 223.1Syn Z: -0.49
Curated Mechanism (G2P)Gene2Phenotype (DDG2P) ↗
limitedPDLIM3-related dilated cardiomyopathyOTHERAD
limitedPDLIM3-related hypertrophic cardiomyopathyOTHERAD

This gene — mechanism propensity

DN
0.76top 25%
GOF
0.80top 10%
LOF
0.3551th %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

PDLIM3 · 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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