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Left eye overall retinal pigment epithelium thickness

RP1L1 · rs4840499

What the study found

Who was studied 29,550 European ancestry individuals.

The effect Each copy of the C allele shifted the measure 0.06 higher; p = 3 × 10−11.

Where it sits Chromosome 8, band 8p23.1 — a synonymous change in RP1L1.

What ClinVar records

Classification Benign for Occult macular dystrophy, Retinitis pigmentosa 88; criteria provided, multiple submitters, no conflicts (2 of 4 stars, 6 submitters), last evaluated 2021-11-07. ClinVar record 361288 NM_178857.6(RP1L1):c.4032A>G (p.Thr1344=)

What this is ClinVar's aggregate record for this position (as of its 2026-10-12 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.

What each result means

C/C Two copies of the version the research linked to Left eye overall retinal pigment epithelium thickness. That is the strongest link of the three results. A link in a study is not a diagnosis.
C/T One copy of the version the research linked to Left eye overall retinal pigment epithelium thickness. That is a smaller link than two copies.
T/T No copy of the version the research linked to Left eye overall retinal pigment epithelium thickness. This is the starting point the study compared everyone against.
Source

Questions about rs4840499

What is rs4840499?

rs4840499 is a single position in the genome, in or near the RP1L1 gene. Published research associates it with left eye overall retinal pigment epithelium thickness. A single variant does not decide an outcome — it shifts a probability, and for most common variants the shift is small.

Does having rs4840499 mean I will get this?

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.

Where does the information about rs4840499 come from?

GWAS Catalog, Pigment cell & melanoma research 2025, PMID:40650424. Every variant on MyGeneLog comes from public primary sources and is published with its citation and the date it was checked.

Quoting this page

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Left eye overall retinal pigment epithelium thickness (rs4840499). MyGeneLog™. https://www.mygenelog.com/variants/rs4840499

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