HHLA1
Chr 8HHLA1 neighbor of OC90
Also known as: PLA2L
Predicted to be located in extracellular region. [provided by Alliance of Genome Resources, Jul 2025]
ResearchGenerating clinical summary…
LOEUF 1.22
Clinical Summary— HHLA1
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Population Constraint (gnomAD)
Low constraint (pLI 0.00) — loss-of-function variants are relatively tolerated in the population.
Some data sources returned errors (1)
omim: Error: OMIM fetch failed: 429
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 0.66
OE 0.86 (0.62–1.22)
Highly tolerant — LoF variants common in population
Missense Constraint?
0.71Z-score
OE missense 0.88 (0.79–0.98)
247 obs / 280.2 exp
Mild missense constraint
Observed / Expected Ratios?
LoF OE?0.86 (0.62–1.22)
0≤0.351.4
Missense OE?0.88 (0.79–0.98)
0≤0.61.4
Synonymous OE?0.91
0≤1.21.6
LoF obs/exp: 23 / 26.7Missense obs/exp: 247 / 280.2Syn Z: 0.69
ClinVar Variant Classifications
0 submitted variants in ClinVar
Protein Context — Lollipop Plot
HHLA1 · protein map & ClinVar variants
Showing all ClinVar variants across the protein. Search a specific variant to highlight its position.
External Resources
Links to major genomics databases and tools
Clinical Trials
Active and recruiting trials from ClinicalTrials.gov
No active trials found for this gene.
Search ClinicalTrials.gov →External Resources
Links to major genomics databases and tools