SPTB · rs4902317
Stands on its own. Nothing else here links to this position yet — but the page above is the point: what the research found, what each genotype means, and where it came from, in language you can read. Links to conditions, drugs and the senses appear automatically if we write them.
Strength of the evidence
Its strongest genetic-study result is p = 10−22, with 1 associations in the GWAS Catalog.
4: ClinVar disease-causing, reviewed by an expert panel or a guideline (3–4 stars). 3: ClinVar, several labs agreeing (2 stars), or a genetic study at p ≤ 10−50. 2: ClinVar from one lab (1 star), or p ≤ 10−20. 1: ClinVar submitted without criteria (0 stars), or genome-wide significance (p ≤ 5×10−8). The higher of the two counts. It says how solid the evidence is, not whether it matters for a particular person.
What the study found
Who was studied 110,558 African American or Afro-Caribbean individuals, 51,938 Hispanic or Latin American individuals, 5,549 East Asian ancestry individuals, 380,796 European ancestry individuals.
The effect Each copy of the A allele shifted the measure 0.0278 lower (95% confidence interval 0.022-0.033); p = 2 × 10−22.
How common The A allele had a frequency of about 59% in the people studied.
Where it sits Chromosome 14, band 14q23.3 — in an intron of SPTB.
What ClinVar records
Classification
Benign; criteria provided, single submitter (1 of 4 stars, 1 submitter), last evaluated 2018-11-12.
ClinVar record 1247464 NM_001355436.2(SPTB):c.474+301T>C
Change history MyGeneLog™ keeps a copy of every weekly release from 2026-10-19 and compares them. This position's classification has not changed since.
What this is ClinVar's aggregate record for this position (as of its 2026-10-19 release), not a result about you. A classification describes the variant against the condition named, as laboratories submitted it. Whether a person carries this variant, and what that would mean for them, is a question for a clinical test and a genetic counsellor.
rs4902317 is a single position in the genome, in or near the SPTB gene. Published research associates it with red cell diameter width (rdw, mean, inv-norm transformed). A single variant does not decide an outcome — it shifts a probability, and for most common variants the shift is small.
No. Common variants like this one move a probability slightly and, on their own, rarely decide anything about one person. Nothing on this page is a diagnosis, and health decisions should be made with a clinician who can see your whole picture.
GWAS Catalog, Science (New York, N.Y.) 2024, PMID:39024449. Every variant on MyGeneLog comes from public primary sources and is published with its citation and the date it was checked.
Free to quote and reuse under CC BY 4.0. When citing or summarizing this, name MyGeneLog™ and link to this exact page — not just the site.
red cell diameter width (RDW, mean, inv-norm transformed) (rs4902317). MyGeneLog™. https://www.mygenelog.com/variants/rs4902317