Rare diseases · Sign or symptom

Abnormal pituitary glycoprotein hormone alpha subunit level

HP:0032481

What it means

Any deviation from the normal concentration of circulating alpha polypeptide of glycoprotein hormones (NCBI Gene 1081).

This alpha subunit is common to luteinizing hormone (LH) , follicle stimulating hormone (FSH) , thyroid stimulating hormone (TSH) and human chorionic gonadotropin (hCG), which are glycoprotein hormones composed of an identical alpha subunit together with a beta subunit that confers biological specificity. The alpha subunit is used as a marker for tumors that produce these hormones.

Part of the broader category

Abnormal pituitary glycoprotein hormone…

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This page uses the Human Phenotype Ontology (2026-06-23) — Human Phenotype Ontology Consortium, hpo.jax.org. Disease associations from Orphanet (INSERM), CC BY 4.0. Content is educational and is not medical advice.