Is PSPH p.Thr149= (c.447G>A) pathogenic?

PSPH p.Thr149= (c.447G>A) is classified Likely benign in PSPH (ClinVar, Single submitter, 1 submitter; last evaluated 2022-07-12). Ultra-rare (popmax 0.0107%, afr); Associated with PSPH deficiency.

What condition is associated with PSPH p.Thr149= (c.447G>A)?

PSPH p.Thr149= (c.447G>A) is associated with PSPH deficiency (ClinVar).

How common is PSPH p.Thr149= (c.447G>A) in the general population?

PSPH p.Thr149= (c.447G>A) is ultra-rare (popmax 0.0107%, afr) (gnomAD).

PSPH p.Thr149=

c.447G>A · rs143341199 · VCV1538624

Likely benign Single submitter

Classification

Likely benign

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

gnomAD v4.1

Rare

ultra-rare (popmax 0.0107%, afr)

Conditions

PSPH deficiency

Computational evidence

Protein change
Missense predictors do not apply to this variant type; conservation carries the signal.
Splicing
SpliceAI	<0.2	no splice effect predicted · four deltas, not one · how we know
Constraint at this position
Conservation	phyloP -4.7	GERP -2.3
Overall
CADD	5.053	PHRED · no single calibrated threshold — expert panels disagree

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.0107% African / African-American · 8/75,006 alleles

Filtering AF 0.00527% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.0038%

Overall 0.00149% 24/1,613,928 alleles · ultra-rare exomes 18/1,461,758 · genomes 6/152,170 · joint denominator

Ancestry group	Frequency	1 in
African / African-Americangrpmax	0.0107%	9,376
East Asian	0.00446%	22,432
South Asian	0.00329%	30,355
Remaining individualsnot grpmax-eligible	0.0032%	31,251
Admixed American	0.00167%	59,972
European (non-Finnish)	0.000678%	147,494

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: PSPH
Protein: p.Thr149=
Coding: c.447G>A
MANE Select: NM_004577
dbSNP: rs143341199
Type: single nucleotide variant
Location: chr7:56015146 (GRCh38)
Gene constraint: LOEUF 1.063 · pLI <0.01 · ClinGen HI gene assoc. with recessive phenotype (gnomAD)
Structure: AlphaFold pLDDT 92.88 · 6 PDB
Residue 149: a β-strand

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

Disease context

PSPH deficiency — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

Similar variants

PSPH p.Thr149Met Uncertain significance ★ ⚠ same residue
PSPH p.Arg101Ter Likely pathogenic ★★ same condition
PSPH c.422-3A>C Uncertain significance ★★ same condition
PSPH c.570+3A>G Uncertain significance ★★ same condition
PSPH c.570+5G>C Uncertain significance ★★ same condition
PSPH c.*341G>A Uncertain significance ★★ same condition
PSPH p.Asn124Ser Uncertain significance ★★ ⚠ same condition
PSPH p.Asp32Asn Uncertain significance ★★ ⚠ same condition

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/psph-p-thr149 (accessed [today's date]).

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