PPDPF

Chr 20

pancreatic progenitor cell differentiation and proliferation factor

The protein is a probable regulator of exocrine pancreas development and is predicted to be involved in cell differentiation and TORC1 signaling. This gene is highly constrained against loss-of-function variants (pLI nearly 1.0), but specific disease associations and inheritance patterns have not been established in the current literature. The mitochondrial localization suggests potential involvement in metabolic processes affecting pancreatic function.

ResearchSummary from RefSeq, UniProt
MultiplemechanismLOEUF 1.94
Clinical SummaryPPDPF
Population Constraint (gnomAD)
Low constraint (pLI 0.00) — loss-of-function variants are relatively tolerated in the population.
Some data sources returned errors (1)

ncbi: Error: NCBI fetch failed: 429 https://eutils.ncbi.nlm.nih.gov/entrez/eutils/esearch.fcgi

Population Genetics & Constraint

gnomAD v4 — loss-of-function & missense intolerance

Tolerant — LoF & missense variants common in population
LoF Constraint
1.94LOEUF
pLI 0.000
Z-score -0.94
OE 1.57 (0.721.94)
Tolerant

Highly tolerant — LoF variants common in population

Missense Constraint
-0.37Z-score
OE missense 1.12 (0.941.35)
82 obs / 73.1 exp
Tolerant

Tolerant to missense variation

Observed / Expected Ratios
LoF OE1.57 (0.721.94)
00.351.4
Missense OE1.12 (0.941.35)
00.61.4
Synonymous OE1.42
01.21.6
LoF obs/exp: 5 / 3.2Missense obs/exp: 82 / 73.1Syn Z: -1.80
DN
0.6162th %ile
GOF
0.6542th %ile
LOF
0.52top 25%

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

PPDPF · 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.

Search ClinicalTrials.gov →
Clinical Literature
Open Research Assistant →
Recent Gene-Specific Literature
Gene in title · MEDLINE · newest first
Europe PMC