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My human gene is on HSCHR6_COX. What is that?

The MHC region on human chromosome 6 is highly variable. The reference assembly only reflects one possible sequence at this position. Nine haplotypes are included in the human genome assembly hosted by the GRC to describe alternate sequence (with a different allele combination), and 7 of these are in the MHC region. HSCHR6_MHC_COX is one haplotype. Genes are annotated on both the reference sequence, and the haplotypes.

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