Effects of Short-term Fasting on Tolerance to Adjuvant Chemotherapy in Breast Cancer Patients
Evidence from experimental animals provides strong support for the concept that caloric
restriction (CR) increases resistance to multiple forms of stress. CR decreases plasma
levels of growth factors, e.g. insulin-like growth factor-I (IGF-I), thereby diverting
energy from growth to maintenance. Accordingly, the currently available information suggests
that short-term fasting protects normal cells against the perils of (high dose)
chemotherapy. In contrast, cancer cells are not (or less) protected as a result of their
self-sufficiency in growth signals. This phenomenon is termed Differential Stress Resistance
(DSR). DSR reduces the severity of side-effects caused by the toxicity of chemotherapy,
without interfering with its effect on reduction of tumour volume or tumour markers. A
recent report, sketching a case series of 10 cancer patients, suggests that short term
fasting protects against the side effects of chemotherapy in humans. Indeed, the majority of
patients preferred fasting over feeding in preparation of their therapy. This study aims to
further evaluate the impact of fasting on tolerance to chemotherapy in humans.
Interventional
Allocation: Randomized, Intervention Model: Parallel Assignment, Masking: Open Label, Primary Purpose: Supportive Care
chemotherapy-induced neutropenia
Neutrophil count after 6 cycles of chemotherapy (6x 21 days)
approximately 126 days
No
Hanno Pijl, MD PhD
Principal Investigator
Leiden University Medical Center
Netherlands: Ministry of Health, Welfare and Sport
P10.247
NCT01304251
March 2011
April 2012
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