GENE REFERENCE / HGNC:4800

HSD17B10

hydroxysteroid 17-beta dehydrogenase 10

protein-coding geneXp11.22Gene information

What does this gene do?

The HSD17B10 gene provides instructions for making a protein called HSD10. This protein is located within mitochondria, the energy-producing centers inside cells, where it has several different functions.

The HSD10 protein is important for the production (synthesis) of proteins in mitochondria. (While most protein synthesis occurs in the fluid surrounding the nucleus, called the cytoplasm, a few proteins are synthesized in the mitochondria.) During protein synthesis, whether in the cytoplasm or in mitochondria, molecules called transfer RNAs (tRNAs) help assemble protein building blocks (amino acids) into the chains that form proteins. The HSD10 protein is involved in making functional mitochondrial tRNA. It forms a complex with an enzyme called TRMT10C to modify tRNAs so that they are more stable and can function properly. In addition, the complex interacts with another enzyme called PRORP to perform an enzymatic function called mitochondrial RNase P (mtRNase P) that cuts precursor RNA molecules, which is an essential step to generating tRNA molecules. Normal mitochondrial protein production, which requires tRNAs, is essential for the formation of the protein complexes that convert the energy from food into a form cells can use.

The HSD10 protein also plays an important role in processing several substances in the body. It helps break down the amino acid isoleucine. Specifically, it is responsible for the fifth step in this process, in which 2-methyl-3-hydroxybutyryl-CoA is converted into 2-methylacetoacetyl-CoA. Through a similar mechanism, the HSD10 protein also processes a group of fats called branched-chain fatty acids.

The HSD10 protein is also thought to be involved in chemical reactions involving female sex hormones (estrogens) and male sex hormones (androgens). HSD10 turns off (inactivates) a potent form of estrogen called 17β-estradiol by converting it to a weaker form called estrone. HSD10 also generates a potent androgen called dihydrotestosterone from a weak androgen called 3α-androstanediol. These reactions are critical for maintaining appropriate levels of male and female sex hormones.

The HSD10 protein also plays a role in certain chemical reactions involving neurosteroids, which are substances that regulate the activity of the nervous system. This protein inactivates two neurosteroids called allopregnanolone and allotetrahydrodeoxycorticosterone. These neurosteroids interact with receptors that prevent the brain from being overloaded with too many signals. By regulating the activity of these neurosteroids, the HSD10 protein may help maintain normal brain function. However, other proteins in the body can also carry out these reactions, and the importance of HSD10 in these functions is unclear.

Source: MedlinePlus, National Library of Medicine. Source publication: 2020-08-18. Source review: 2018-01.

ClinGen reviews

ClinGen reviews the evidence linking a particular gene to a condition. Each rating below describes the strength of that link. It does not classify a variant in your DNA file.

Condition	Inheritance	Evidence
HSD10 mitochondrial diseaseMONDO:0010327 · Evaluated 2018-10-09	X-linked	DefinitiveFatty Acid Oxidation Disorders Gene Curation Expert Panel

ClinVar records

These numbers show what has been submitted to ClinVar. They cannot tell you how likely you are to have a condition.

Submitted alleles: 377
Submissions for variants in or overlapping this gene: 446
Submissions explicitly reporting this gene: 280
Alleles reported pathogenic / likely pathogenic: 19
VariationIDs with uncertain significance: 76
VariationIDs with conflicting classifications: 10

The rows count different things: alleles, submissions or VariationIDs. Their categories can overlap, so do not add them together. Pathogenic/likely pathogenic counts exclude structural variants that merely overlap a gene. A dash in the source means “not reported,” not zero.

NCBI produces the gene-summary file each week using counts recorded at the start of the month. The numbers may differ from those on the live ClinVar website. Read the field definitions ↗

View this gene in ClinVar ↗

YOUR DNA FILE

Can your DNA file tell you about HSD17B10?

From a DNA test kit (such as 23andMe, AncestryDNA or MyHeritage). These kits check a fixed list of about 600,000 to 700,000 positions across your whole genome. ClinVar lists 19 alleles in HSD17B10 reported as pathogenic or likely pathogenic. A kit checks only some of these positions, and often none of them.

From whole genome sequencing (a VCF file). Sequencing reads most of your genome. Your file lists the places where your DNA differs from the reference genome. Some regions are hard to sequence, including parts of some genes that have near-identical copies elsewhere, and a VCF file does not record which positions were read well.

If a variant is not in your file, that does not mean you don’t have it.

What BioDecode checks

BioDecode compares every variant in your file with ClinVar, on your own computer. For each match, it shows the ClinVar classification, the review status and the condition it was reported for. Your file is not uploaded.

A ClinVar classification applies to one particular variant and the condition it was reported for. It does not tell you about other variants in HSD17B10.

BioDecode cannot fill gaps in your test, diagnose a condition or replace clinical testing.

Buy BioDecode See a sample report →Check file compatibility →