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PTH p.His40=

c.120T>C · rs977965204 · VCV758235

Likely benign Single submitter
Classification
Likely benign
ClinVar
Review
Single submitter ★☆☆☆
ClinVar · 1 submitter
gnomAD v4.1
Rare
very rare (popmax 8.47e-05%, 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
ConservationphyloP 0.92GERP -3.6, phastCons 0.36
Overall
CADD6.72PHRED · no single calibrated threshold — expert panels disagree

Population frequency

gnomAD v4.1 · exomes + genomes
Grpmax group 8.47e-05% European (non-Finnish) · 1/1,180,008 alleles
Overall 6.2e-05% 1/1,614,106 alleles · very rare exomes 1/1,461,842 · genomes 0/152,264 · joint denominator

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
PTH
Protein
p.His40=
Coding
c.120T>C
MANE Select
NM_000315
dbSNP
rs977965204
Type
single nucleotide variant
Location
chr11:13492633 (GRCh38)
Gene constraint
LOEUF 1.32 · pLI 0.05 (gnomAD)
Structure
AlphaFold pLDDT 72.93 · 26 PDB
Residue 40
an α-helix
Full PTH gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Similar variants

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/pth-p-his40 (accessed [today's date]).

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