rs74315366

A SNP in the SDHB gene on chromosome 1. Its most notable genotype is A;G: Hereditary PGL/PCC Syndrome

Gene
SDHB
Location
Chr 117,033,078 (GRCh38)
Highest magnitude
6.2Very important
Tested on
AncestryDNA
Minor allele frequency
<1%

Genotypes

Plus strand, as in 23andMe and AncestryDNA files.

  1. G;GGoodcommon in clinvarTypical · 0.0
  2. A;GMost notableBadHereditary PGL/PCC SyndromeVery important · 6.2

SNPedia records rs74315366 on the minus strand: (C;C), (C;T). Magnitude rates how notable a genotype is from 0 to 10, not how risky it is.

Notes

From SNPedia

Notes

The concentration of basic and acidic compounds in guinea-pig lung [proceedings]. The pressure rises: update on the genetics of phaeochromocytoma. A novel succinate dehydrogenase subunit B gene mutation, H132P, causes familial malignant sympathetic extraadrenal paragangliomas. The occurrence of SDHB gene mutations in pheochromocytoma. Germline SDHB mutations are common in patients with apparently sporadic sympathetic paragangliomas. The succinate dehydrogenase genetic testing in a large prospective series of patients with paragangliomas.

Source and license

Adapted from rs74315366 on SNPedia, using a snapshot taken October 16, 2026. SNPedia content is shared under CC BY-NC-SA 3.0 US, and this page is shared under the same license.

SNPedia is a community-edited wiki. Its entries can be incomplete, out of date or wrong, and nothing here is a diagnosis or medical advice. Magnitude is a community rating of how interesting a genotype is, not a risk score.