Genetic Disorder Reference Sheet: HOXB13

Suzanne M. Mahon, RN, DNSc, AOCN®, AGN-BC


An altered HOXB13 gene may increase a patient’s risk for developing prostate cancer. The HOXB13 gene is expressed in the prostate beginning in early development and affects prostate cell proliferation and differentiation and androgen receptor regulation. When it acts as a tumor suppressor gene, HOXB13 codes for a protein that regulates cell division. However, altered copies of HOXB13 are inactivated, meaning that it does not function properly or does not produce the protein it codes for, resulting in uncontrolled cell division.

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