GenBank Record for Variant m.6620T>C
704 FL sequences: 681 Main / 10 aDNA / 13 cancer, cell lines or cybrids; 0 CR sequences
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Count of the Variant in the Three hmtDNA Lineages in Mitomap
LineageL (African)
(7200 sequences)		M (Asian)
(13795 sequences)		N (Eurasian)
(44265 sequences)		All
(65286 sequences)
Count24475205704
Frequency in each lineage0.33%
(24/7200)		3.44%
(475/13795)		0.46%
(205/44265)		-
Frequency overall0.04%
(24/65286)		0.73%
(475/65286)		0.31%
(205/65286)		1.08%
(704/65286)

* Footnotes:

Full Length (FL) sequences are now classified into three subsets: aDNA for ancient DNA, CancerCL for cancer, tumor, other abnormal tissues, or cell line studies (include cybrids), and Main for the rest.

The current sequence counts are from two sets of human mitochondrial sequences collected from GenBank on Mar 10, 2026. These sets consist of: