Is IFT172 p.Lys281= (c.843G>A) pathogenic?

IFT172 p.Lys281= (c.843G>A) is classified Likely benign in IFT172 (ClinVar, Single submitter, 1 submitter; last evaluated 2021-05-14). Absent from gnomAD v4.1; Associated with retinitis pigmentosa 71.

What condition is associated with IFT172 p.Lys281= (c.843G>A)?

IFT172 p.Lys281= (c.843G>A) is associated with retinitis pigmentosa 71, short-rib thoracic dysplasia 10 with or without polydactyly (ClinVar).

How common is IFT172 p.Lys281= (c.843G>A) in the general population?

IFT172 p.Lys281= (c.843G>A) is absent from gnomAD v4.1 (gnomAD).

How is Retinitis pigmentosa inherited?

Typically Autosomal dominant, Autosomal recessive (Orphanet). A genetic counselor can assess individual risk for a family.

IFT172 p.Lys281=

c.843G>A · rs1668252791 · VCV1551892

Likely benign Single submitter

Classification

Likely benign

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

gnomAD v4.1

Absent

absent from gnomAD v4.1

Conditions

retinitis pigmentosa 71

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 0.77	GERP 0.39, phastCons 1
Overall
CADD	9.569	PHRED · no single calibrated threshold — expert panels disagree

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: IFT172
Protein: p.Lys281=
Coding: c.843G>A
MANE Select: NM_015662
dbSNP: rs1668252791
Type: single nucleotide variant
Location: chr2:27480092 (GRCh38)
Gene constraint: LOEUF 0.745 · pLI <0.01 (gnomAD)
Structure: AlphaFold pLDDT 83.98 · 1 PDB

Full IFT172 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Disease context

retinitis pigmentosa 71 — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

Also linked: short-rib thoracic dysplasia 10 with or without polydactyly

For Retinitis pigmentosa (Orphanet):

Inheritance: Autosomal dominant, Autosomal recessive, Mitochondrial inheritance
Onset: Adolescent, Adult, Childhood
Prevalence: 1-5 / 10 000 (Europe)

Similar variants

IFT172 c.1411+2T>C Likely pathogenic ★★ same condition
IFT172 c.1525-1G>A Pathogenic/Likely pathogenic ★★ same condition
IFT172 c.184-2A>C Likely pathogenic ★★ same condition
IFT172 c.2443-1G>C Likely pathogenic ★★ same condition
IFT172 c.2976-2A>T Likely pathogenic ★★ same condition
IFT172 c.3111+1G>T Likely pathogenic ★★ same condition
IFT172 c.3821+1G>A Pathogenic/Likely pathogenic ★★ same condition
IFT172 c.786-2A>G Likely pathogenic ★★ 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/ift172-p-lys281 (accessed [today's date]).

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