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Mean corpuscular hemoglobin

TRRAP · rs55702649

Where this position leads

What the study found

Who was studied 408,112 British individuals.

The effect Each copy of the C allele shifted the measure 0.0401 lower (95% confidence interval 0.029-0.051); p = 4 × 10⁻¹³.

How common The C allele had a frequency of about 4% in the people studied.

Where it sits Chromosome 7, band 7q22.1 — a synonymous change in TRRAP.

What ClinVar records

Classification Benign; criteria provided, multiple submitters, no conflicts (2 of 4 stars, 3 submitters), last evaluated 2026-02-04. ClinVar record 1231354 NM_001375524.1(TRRAP):c.552G>C (p.Val184=)

What this is ClinVar's aggregate record for this position (as of its 2026-09-24 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 Published research associates this genotype (two copies of the reported risk allele) with a higher likelihood of Mean corpuscular hemoglobin compared to the general population.

C/G Published research associates this genotype (one copy of the reported risk allele) with an intermediate association with Mean corpuscular hemoglobin.

G/G Published research associates this genotype with typical/baseline likelihood of Mean corpuscular hemoglobin — no copies of the reported risk allele.

Source

The Polygenic and Monogenic Basis of Blood Traits and Diseases

Vuckovic D, Bao EL, Akbari P, Lareau CA, Mousas A, Jiang T, Chen MH, Raffield LM, Tardaguila M, Huffman JE, Ritchie SC, Megy K

and 100 more — show all

Ponstingl H, Penkett CJ, Albers PK, Wigdor EM, Sakaue S, Moscati A, Manansala R, Lo KS, Qian H, Akiyama M, Bartz TM, Ben-Shlomo Y, Beswick A, Bork-Jensen J, Bottinger EP, Brody JA, van Rooij FJA, Chitrala KN, Wilson PWF, Choquet H, Danesh J, Di Angelantonio E, Dimou N, Ding J, Elliott P, Esko T, Evans MK, Felix SB, Floyd JS, Broer L, Grarup N, Guo MH, Guo Q, Greinacher A, Haessler J, Hansen T, Howson JMM, Huang W, Jorgenson E, Kacprowski T, Kähönen M, Kamatani Y, Kanai M, Karthikeyan S, Koskeridis F, Lange LA, Lehtimäki T, Linneberg A, Liu Y, Lyytikäinen LP, Manichaikul A, Matsuda K, Mohlke KL, Mononen N, Murakami Y, Nadkarni GN, Nikus K, Pankratz N, Pedersen O, Preuss M, Psaty BM, Raitakari OT, Rich SS, Rodriguez BAT, Rosen JD, Rotter JI, Schubert P, Spracklen CN, Surendran P, Tang H, Tardif JC, Ghanbari M, Völker U, Völzke H, Watkins NA, Weiss S, Cai N, Kundu K, Watt SB, Walter K, Zonderman AB, Cho K, Li Y, Loos RJF, Knight JC, Georges M, Stegle O, Evangelou E, Okada Y, Roberts DJ, Inouye M, Johnson AD, Auer PL, Astle WJ, Reiner AP, Butterworth AS, Ouwehand WH, Lettre G, Sankaran VG, Soranzo N

VA Million Veteran Program

Cell · 2020 · PMID 32888494 · open access

Questions about rs55702649

What is rs55702649?

rs55702649 is a single position in the genome, in or near the TRRAP gene. Published research associates it with mean corpuscular hemoglobin. A single variant does not decide an outcome — it shifts a probability, and for most common variants the shift is small.

What conditions is rs55702649 linked to?

On MyGeneLog this position is linked to Blood Cell Counts. The research behind each link, and its sources, are set out on that condition page.

Does having rs55702649 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 rs55702649 come from?

GWAS Catalog, Cell 2020, PMID:32888494. Every variant on MyGeneLog comes from public primary sources and is published with its citation and the date it was checked.

Quoting this page

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.

Mean corpuscular hemoglobin (rs55702649). MyGeneLog™. https://www.mygenelog.com/variants/rs55702649

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