U.S. flag

An official website of the United States government

GTR Home > Conditions/Phenotypes > Orthostatic hypotension 2

Summary

Orthostatic hypotension-2 is an autosomal recessive disorder characterized by severe orthostatic hypotension, recurrent hypoglycemia, and low norepinephrine levels. The disorder has onset in infancy or early childhood. Some patients may also have renal dysfunction and reduced life expectancy. The disorder results from a defect in the biosynthesis of norepinephrine from dopamine due to a cofactor deficiency. For a discussion of genetic heterogeneity of ORTHYP, see ORTHYP1 (223360). [from OMIM]

Available tests

1 test is in the database for this condition.

Genes See tests for all associated and related genes

  • Also known as: CGCytb, CYB561A1, FRRS2, ORTHYP2, CYB561
    Summary: cytochrome b561

Clinical features

Help

Show allHide all

IMPORTANT NOTE: NIH does not independently verify information submitted to the GTR; it relies on submitters to provide information that is accurate and not misleading. NIH makes no endorsements of tests or laboratories listed in the GTR. GTR is not a substitute for medical advice. Patients and consumers with specific questions about a genetic test should contact a health care provider or a genetics professional.