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BTHLM1B

Chr 21ADAR

collagen type VI alpha 2 chain

Also known as: BTHLM1, BTHLM1B, PP3610, UCMD1, UCMD1B

This gene encodes an alpha chain of type VI collagen, a beaded filament collagen that organizes matrix components in connective tissues through binding extracellular matrix proteins via von Willebrand Factor type A domains. Mutations cause Bethlem myopathy, a relatively mild congenital muscular dystrophy characterized by joint contractures and progressive muscle weakness. The condition follows both autosomal dominant and autosomal recessive inheritance patterns.

OMIMResearchSummary from RefSeq, OMIM
AD/AR1 OMIM phenotype
Some data sources returned errors (2)

ensembl: Error: Ensembl fetch failed: 400 for https://rest.ensembl.org/lookup/symbol/homo_sapiens/BTHLM1B?content-type=application/json&expand=1

gnomad: Error: Gene not found

Population Genetics & Constraint

Constraint data not available from gnomAD.

ClinVar Variant Classifications

0 submitted variants in ClinVar

Protein Context — Lollipop Plot

BTHLM1B · protein map & ClinVar variants

Showing all ClinVar variants across the protein. Search a specific variant to highlight its position.

3D Protein StructureAlphaFold

Clinical Trials

Active and recruiting trials from ClinicalTrials.gov

No active trials found for this gene.

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Clinical Literature
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No publications found for BTHLM1B