Is RS1 p.Pro193His (c.578C>A) pathogenic?

RS1 p.Pro193His (c.578C>A) is classified Likely pathogenic in RS1 (ClinVar, Single submitter, 1 submitter; last evaluated 2022-03-08). AlphaMissense: likely pathogenic (0.9534); Absent from gnomAD v4.1; Associated with X-linked retinoschisis.

What condition is associated with RS1 p.Pro193His (c.578C>A)?

RS1 p.Pro193His (c.578C>A) is associated with X-linked retinoschisis (ClinVar).

How common is RS1 p.Pro193His (c.578C>A) in the general population?

RS1 p.Pro193His (c.578C>A) is absent from gnomAD v4.1 (gnomAD).

What do computational predictors say about RS1 p.Pro193His (c.578C>A)?

AlphaMissense predicts likely pathogenic (score 0.9534) — an in-silico prediction, not a clinical call.

RS1 p.Pro193His

c.578C>A · rs281865352 · VCV1697265

Likely pathogenic Single submitter

Classification

Likely pathogenic

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely pathogenic

0.9534 · ACMG-weighted

gnomAD v4.1

Absent

absent from gnomAD v4.1

Missense predictors

2/3 damaging

AlphaMissense, REVEL, SaProt

Conditions

X-linked retinoschisis

Computational evidence

Protein change
AlphaMissense	0.9534	likely pathogenic ✓ concordant with ClinVar
REVEL	0.959	strongly pathogenic-leaning
SaProt	LLR -9.76	tolerated
⇒ AlphaMissense and REVEL call this damaging; SaProt does not.
Splicing
SpliceAI	—	not looked up on this page · why
Constraint at this position
Conservation	phyloP 12	GERP 1.7, phastCons 1
Regional constraint	o/e 0.80	unconstrained · MANE · 30 kb · p 0.0049 · regional, not allelic
Overall
CADD	28.5	PHRED · no single calibrated threshold — expert panels disagree

AlphaMissense carries the ACMG weight for missense; REVEL and SaProt are independent agreement signals.

Population frequency

gnomAD v4.1 · exomes + genomes

Absent from gnomAD v4.1. Not observed in any sequenced alleles — a rarity signal (ACMG PM2-supporting), not evidence of pathogenicity on its own.

Variant & gene context

Gene: RS1
Protein: p.Pro193His
Coding: c.578C>A
MANE Select: NM_001323289 · reported on NM_000330
dbSNP: rs281865352
Type: single nucleotide variant
Location: chrX:18642101 (GRCh38)

Full RS1 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Disease context

X-linked retinoschisis — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

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/rs1-p-pro193his (accessed [today's date]).

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