Is HTRA2 p.Ala134= (c.402C>G) pathogenic?

HTRA2 p.Ala134= (c.402C>G) is classified Likely benign in HTRA2 (ClinVar, Single submitter, 1 submitter; last evaluated 2023-06-30). Very rare (popmax 0.00357%, nfe).

How common is HTRA2 p.Ala134= (c.402C>G) in the general population?

HTRA2 p.Ala134= (c.402C>G) is very rare (popmax 0.00357%, nfe) (gnomAD).

HTRA2 p.Ala134=

c.402C>G · rs949385168 · VCV2868541

Likely benign Single submitter

Classification

Likely benign

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

gnomAD v4.1

Rare

very rare (popmax 0.00357%, nfe)

Computational evidence

Protein change
Missense predictors do not apply to this variant type; conservation carries the signal.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP -5.5	GERP -3.7
Overall
CADD	0.499	PHRED · no single calibrated threshold — expert panels disagree

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.00357% European (non-Finnish) · 42/1,175,698 alleles

Filtering AF 0.00267% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.00237%

Overall 0.00282% 45/1,597,998 alleles · very rare

Ancestry group	Frequency	1 in
European (non-Finnish)grpmax	0.00357%	27,993
Remaining individualsnot grpmax-eligible	0.00323%	30,992
African / African-American	0.00134%	74,710

Rarity supports pathogenicity (ACMG PM2); frequency above a disease-specific BA1/BS1 threshold argues against it. A variant frequent in one ancestry group can be near-absent in others, so a single global figure can mislead.

Variant & gene context

Gene: HTRA2
Protein: p.Ala134=
Coding: c.402C>G
MANE Select: NM_013247
dbSNP: rs949385168
Type: single nucleotide variant
Location: chr2:74530408 (GRCh38)
Gene constraint: LOEUF 0.778 · pLI <0.01 (gnomAD)
Structure: AlphaFold pLDDT 74.83 · 13 PDB

Full HTRA2 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Similar variants

HTRA2 p.Ala134Thr Uncertain significance ★ ⚠ same residue
HTRA2 p.Arg380Ter Pathogenic ★★ same type
HTRA2 p.Gln82Ter Pathogenic ★★ same type
AUP1 p.Pro9Ser Uncertain significance ★★ ⚠ same type
HTRA2 c.507-10T>A Uncertain significance ★★ same type
HTRA2 c.507-9C>A Uncertain significance ★★ same type
HTRA2 p.Ala110Gly Uncertain significance ★★ ⚠ same type
HTRA2 p.Ala415Thr Uncertain significance ★★ ⚠ same type

Built on 18 open, versioned datasets — ClinVar, gnomAD, AlphaMissense, REVEL, ClinGen & more — plus Sugi Variant's own cross-source analysis. Source data 2026-01–2026-10, ClinVar 2026-10. Full sources & versions →

Cite Sugi Variant

Gür T. Sugi Variant: A Deterministic Per-Variant Germline Reference from a Knowledge Graph for Humans and AI Agents. 2026. doi:10.5281/zenodo.21509445. This variant: https://sugi.bio/variant/htra2-p-ala134 (accessed [today's date]).

Preprint & method: sugi.bio/variant/method Machine-readable: this page as Markdown