SPHKAP

Chr 2

SPHK1 interactor, AKAP domain containing

Also known as: SKIP

SPHKAP encodes an anchoring protein that binds to and targets protein kinase A type I to specific subcellular compartments, particularly the mitochondrion and muscle Z disc. The gene is highly constrained against loss-of-function variants (pLI=0.94, LOEUF=0.32), but no human disease phenotypes have been reported to date from SPHKAP mutations.

Summary from RefSeq, UniProt
Research Assistant →
0
Active trials
5
Pubs (1 yr)
26
P/LP submissions
0%
P/LP missense
0.32
LOEUF· LoF intol.
LOF
Mechanism· predicted
Clinical SummarySPHKAP
Population Constraint (gnomAD)
Highly constrained gene — heterozygous loss-of-function variants are very rare in the population (pLI 0.94). One damaged copy is likely sufficient to cause disease.
📋
ClinVar Variants
26 unique Pathogenic / Likely Pathogenic· 244 VUS of 298 total submissions

Population Genetics & Constraint

gnomAD v4 — loss-of-function & missense intolerance

LoF intolerant — likely haploinsufficient
LoF Constraint
0.32LOEUF
pLI 0.936
Z-score 5.86
OE 0.19 (0.120.32)
Highly constrained

Highly LoF-intolerant (top ~10% of genes)

Missense Constraint
-0.76Z-score
OE missense 1.07 (1.011.13)
979 obs / 914.6 exp
Tolerant

Tolerant to missense variation

Observed / Expected Ratios
LoF OE0.19 (0.120.32)
00.351.4
Missense OE1.07 (1.011.13)
00.61.4
Synonymous OE0.95
01.21.6
LoF obs/exp: 12 / 61.6Missense obs/exp: 979 / 914.6Syn Z: 0.74
DN
0.3991th %ile
GOF
0.5758th %ile
LOF
0.70top 10%

The highest-scoring mechanism for this gene is loss-of-function (haploinsufficiency).

LOFprediction above median · LOEUF 0.32

Predictions from Badonyi M, Marsh JA. PLoS ONE. 2024;19(8):e0307312. Mechanism ranking also informed by gnomAD constraint, ClinVar, and ClinGen data.

ClinVar Variant Classifications

298 submitted variants in ClinVar

Classification Summary

Pathogenic25
Likely Pathogenic1
VUS244
Likely Benign25
Benign2
25
Pathogenic
1
Likely Pathogenic
244
VUS
25
Likely Benign
2
Benign

Curated Variants Distribution

Classified variants from ClinVar · 5 ACMG categories

ClassificationLoFMissense + InframeNon-codingSynonymousTotal
Pathogenic
0
0
25
0
25
Likely Pathogenic
0
0
1
0
1
VUS
0
239
5
0
244
Likely Benign
0
21
1
3
25
Benign
0
1
1
0
2
Total0261333297

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

View in ClinVar →

Protein Context — Lollipop Plot

SPHKAP · 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.

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