Iron-deficiency anemia: Iron is necessary for the body to make red blood cells. Low iron intake and loss of blood due to menstruation are the most common causes of iron-deficiency anemia. It may also be caused by blood loss from the GI tract because of ulcers or cancer.
What is BRCA Gene Testing? BRCA gene testing, also known as BRACAnalysis, is a blood test that helps evaluate a personâs risk for developing certain types of breast cancer. The test evaluates two genes, BRCA1 and BRCA2, called breast cancer susceptibility genes.
BRCA1: A gene that normally acts to restrain the growth of cells in the breast but which, when mutated, predisposes to breast cancer. The gene's full name is breast cancer 1, early onset.The BRCA1 gene belongs to a class of genes known as tumor suppressor genes.n addition to breast cancer, mutations in the BRCA1 gene also increase the risk of ovarian cancer, prostate cancer, and colon cancer. The BRCA1 gene is located on chromosome 17q21 -- the long (q) arm of chromosome 17 at position 21.