PRPSAP1

Chr 17

phosphoribosyl pyrophosphate synthetase associated protein 1

Also known as: PAP39

NCBI Gene: 5635ENSG00000161542UniProt: Q14558

Enables identical protein binding activity. Predicted to be involved in 5-phosphoribose 1-diphosphate biosynthetic process and purine nucleotide biosynthetic process. Predicted to be active in cytoplasm. [provided by Alliance of Genome Resources, Jul 2025]

0
Active trials
13
Pathogenic / LP
57
ClinVar variants
4
Pubs (1 yr)
1.7
Missense Z
1.29
LOEUF
Clinical Summary— PRPSAP1
⚡
Population Constraint (gnomAD)
Low constraint (pLI 0.00) — loss-of-function variants are relatively tolerated in the population.
📋
ClinVar Variants
13 Pathogenic / Likely Pathogenic· 40 VUS of 57 total submissions

Population Genetics & Constraint

gnomAD v4 — loss-of-function & missense intolerance

gnomAD
Tolerant — LoF & missense variants common in population
LoF Constraint?LOEUF (Loss-of-function Observed/Expected Upper bound Fraction) is the upper bound of the 90% CI for LoF OE — the preferred gnomAD v4 metric. Lower = more intolerant to LoF. LOEUF < 0.35 = highly constrained.
1.29LOEUF
pLI 0.000
Z-score 0.74
OE 0.79 (0.51–1.29)
Tolerant

Highly tolerant — LoF variants common in population

Missense Constraint?Missense Z-score: standard deviations fewer missense variants observed vs. expected. Z > 3.09 (p < 0.001) = gene does not tolerate missense variation. OE missense < 0.6 is also considered constrained.
1.67Z-score
OE missense 0.69 (0.60–0.78)
153 obs / 223.2 exp
Tolerant

Mild missense constraint

Observed / Expected Ratios?Shaded band = 90% confidence interval. Vertical tick = point estimate. Grey threshold line = gnomAD constraint cutoff for that variant class.
LoF OE?Ratio of observed to expected LoF variants. Upper CI bound (LOEUF) ≤ 0.35 = strong LoF constraint signal.0.79 (0.51–1.29)
0≤0.351.4
Missense OE?Ratio of observed to expected missense variants. OE ≤ 0.6 = fewer missense variants than expected by chance.0.69 (0.60–0.78)
0≤0.61.4
Synonymous OE?Control metric — synonymous variants are largely neutral and expected near OE = 1.0. Significant deviation may indicate annotation issues.1.17
0≤1.21.6
LoF obs/exp: 12 / 15.1Missense obs/exp: 153 / 223.2Syn Z: -1.25

ClinVar Variant Classifications

57 submitted variants in ClinVar

ClinVar

Classification Summary

Pathogenic12
Likely Pathogenic1
VUS40
Likely Benign4
12
Pathogenic
1
Likely Pathogenic
40
VUS
4
Likely Benign

Curated Variants Distribution

Classified variants from ClinVar · 5 ACMG categories

ClassificationLoFMissense + InframeNon-codingSynonymousTotal
Pathogenic
0
0
12
0
12
Likely Pathogenic
0
0
1
0
1
VUS
0
36
4
0
40
Likely Benign
0
3
0
1
4
Benign
0
0
0
0
0
Total03917157

LoF = frameshift, stop gained/lost, canonical splice · Counts from ClinVar esearch · Updated hourly

View in ClinVar →

Protein Context — Lollipop Plot

PRPSAP1 · 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

ClinicalTrials.gov

No active trials found for this gene.

Search ClinicalTrials.gov →
Clinical Literature
Landmark / reviewRecent case evidence
Full-Text Mentions
NLP-detected gene mentions in article bodies · via PubTator3
PubTator3
Top 5 full-text resultsSearch PubTator3 ↗
Key Publications
Landmark & review papers · by relevance
PubMed
Top 5 results · since 2015Search PubMed ↗
Recent Gene-Specific Literature
Gene in title · MEDLINE · newest first
Europe PMC

No open access results found

Top 5 resultsSearch Europe PMC ↗

External Resources

Links to major genomics databases and tools

Franklin by Genoox
AI-powered variant curation and clinical analysis
DECIPHER
Genomic variants and phenotypes in rare disease patients