P. Boyle et al., DEPOT-MEDROXYPROGESTERONE ACETATE (DMPA) AND CANCER - MEMORANDUM FROMA WHO MEETING, Bulletin of the World Health Organization, 71(6), 1993, pp. 669-676
Depot-medroxyprogesterone acetate (DMPA) is a long-acting progestation
al contraceptive, which is administered by injection. It was developed
in the mid-1960s, when it was seen as a method that would be particul
arly useful for women seeking reversible contraception who had difficu
lty taking a pill every day. DMPA has been shown to be a highly effect
ive contraceptive, and it has proved acceptable in a variety of settin
gs. The drug is licensed as a contraceptive in more than 90 countries
and has been widely used in a number of them, such as Thailand and New
Zealand. On a worldwide basis, the licensing, acceptability, and prev
alence of use have been influenced by concern that DMPA may increase t
he risk of cancer. Cancer of the breast has been a particular concern.
This Memorandum reviews comprehensively the results of toxicological
tests in animals and epidemiological studies in humans concerning the
carcinogenicity of DMPA.