WARF: P100082US02

Vitamin D Analog “Me-Cvit” Potentially Useful to Inhibit Hypercalcemia, Treat Cancer


Hector DeLuca, Katarzyna Sokolowska, Margaret Clagett-Dame, Lori Plum, Antonio Mouriño Mosquera, Rafal Sicinski

The Wisconsin Alumni Research Foundation (WARF) is seeking commercial partners interested in developing a vitamin D analog that potentially may be used to inhibit the development of hypercalcemia or as a chemotherapeutic agent.
OVERVIEWThe hormonally active form of vitamin D, known as calcitriol or 1,25 dihydroxyvitamin D3, has shown promise for treating diseases ranging from osteoporosis to cancer to psoriasis. However, the hormone mobilizes calcium from bones and increases intestinal absorption of dietary calcium. Effective therapeutic concentrations can lead to hypercalcemia; a condition characterized by elevated blood calcium levels, alterations in mental status, muscle weakness and calcification of soft tissues and organs such as the heart and kidneys. Therefore, a need exists for non-calcemic compounds that provide desirable therapeutic effects without causing dose-limiting hypercalcemia.
THE INVENTIONUW–Madison researchers have developed a novel vitamin D analog, 1α,25-dihydroxy-6-methylvitamin D3, also known as Me-Cvit. This compound binds the vitamin D receptor with the same affinity as the native hormone but shows much less potency for other biological activities, including promotion of calcium transport. It could act as a dominant negative and be useful as an antidote for vitamin D intoxication to help treat hypercalcemia caused by a vitamin D analog. In addition, because Me-Cvit shows some cellular differentiation activity and ability to promote transcription of 24-hydroxylase but does not promote intestinal calcium transport, it may be useful as an anticancer agent, particularly for leukemia, colon cancer, breast cancer, skin cancer or prostate cancer.
  • An antidote for vitamin D intoxication to treat hypercalcemia caused by administration of a vitamin D compound
  • Cancer treatment
  • May act in vivo as an antagonist for vitamin D
  • Less likely to cause dose-limiting hypercalcemia than calcitriol
  • May be administered in a variety of forms
Contact Information
For current licensing status, please contact Rafael Diaz at or 608-960-9847.
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