Doctors
at Long Island Jewish (LIJ) Medical Center
recently discovered a link between a common
chemotherapy drug and a serious bone disease
called osteonecrosis of the jaw (ONJ). The
discovery, published in the Journal of Oral
and Maxillofacial Surgeons, prompted both
the US Food and Drug Administration (FDA)
and Novartis, the manufacturer of bisphosphonates
used in cancer chemotherapy, to issue warnings
earlier this fall to physicians and dentists
about the risk for this potential adverse
effect. ONJ is a condition in which the
bone tissue in the jaw fails to heal after
minor trauma such as a tooth extraction,
causing the bone to be exposed. The exposure
can eventually lead to infection and fracture
and may require long-term antibiotic therapy
or surgery to remove the dying bone tissue.
The chief
of the Division of Oral and Maxillofacial
Surgery at LIJ, Salvatore Ruggiero, DMD,
MD, and his staff reported that
they were struck by a cluster of cancer
patients with necrotic lesions in the jaw
— a condition they rarely
saw, in only about one to two patients a
year. When they launched a study of patients’
charts, they found that 63 patients diagnosed
with this condition over a three-year period
shared only one common clinical feature:
they had all received long-term bisphosphonate
therapy.
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