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RATIONALE: Pyridoxine (vitamin B6) and topical urea/lactic acid-based cream may prevent or lessen hand-foot syndrome caused by chemotherapy. It is not yet known whether giving pyridoxine with or without topical urea/lactic acid-based cream is more effective than topical urea/lactic acid-based cream alone or a placebo in preventing hand-foot syndrome.
PURPOSE: This randomized phase III trial is studying pyridoxine and topical urea/lactic acid-based cream to see how well they work compared with giving pyridoxine together with a placebo, giving topical urea/lactic acid-based cream together with a placebo, or giving two placebos in preventing hand-foot syndrome in patients who are receiving capecitabine for breast cancer or other cancer.
- Determine whether the prophylactic use of a topical urea/lactic acid cream can decrease the incidence/severity of capecitabine-caused palmar-plantar erythrodysesthesia in patients receiving capecitabine for breast and/or other cancer.
- Evaluate the potential toxicity of this cream.
- Determine whether the prophylactic use of vitamin B6 can decrease the incidence and/or severity of capecitabine-caused palmar-plantar erythrodysesthesia.
- Evaluate the potential toxicity of vitamin B6.
- Determine whether the prophylactic use of a topical urea/lactic acid cream in combination with vitamin B6 can decrease the incidence and/or severity of capecitabine caused palmar-plantar erythrodysesthesia.
OUTLINE: This is a randomized, double-blind, placebo-controlled study. Patients are stratified according to age (< 50 years old vs 50-60 years old vs > 60 years old), sex, capecitabine dose level (2000 mg/day vs 2500 mg/day), cancer type (breast vs other), and mode of therapy (adjuvant [including neo-adjuvant] therapy vs metastatic disease). Patients are randomized to 1 of 6 treatment arms (treatment arms I-IV closed to accrual as of 10/24/007).
- Arm I (closed to accrual as of 10/24/2007): Patients receive topical urea/lactic acid-based cream applied to palms and soles twice daily and oral pyridoxine once daily on days 1-21.
- Arm II (closed to accrual as of 10/24/2007): Patients receive topical urea/lactic acid-based cream as in arm I (closed to accrual as of 10/24/2007) and oral placebo once daily on days 1-21.
- Arm III (closed to accrual as of 10/24/2007): Patients receive placebo cream applied to palms and soles twice daily and pyridoxine as in arm I (closed to accrual as of 10/24/2007).
- Arm IV (closed to accrual as of 10/24/2007):Patients receive placebo cream as in arm III and oral placebo as in arm II (closed to accrual as of 10/24/2007).
- Arm V: Patients receive topical urea/lactic acid-based cream applied to palms and soles twice daily on days 1-21.
- Arm VI: Patients receive placebo cream applied to palms and soles twice daily on days 1-21.
In all arms, treatment repeats every 21 days for up to 4 courses in the absence of disease progression or unacceptable toxicity.
PROJECTED ACCRUAL: A total of 132 patients will be accrued for this study.
Allocation: Randomized, Control: Placebo Control, Masking: Double-Blind, Primary Purpose: Supportive Care
pyridoxine hydrochloride, urea/lactic acid-based topical cream, placebo
Mayo Clinic Scottsdale
National Cancer Institute (NCI)
Published on BioPortfolio: 2014-08-27T03:45:57-0400
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The 4-methanol form of VITAMIN B 6 which is converted to PYRIDOXAL PHOSPHATE which is a coenzyme for synthesis of amino acids, neurotransmitters (serotonin, norepinephrine), sphingolipids, aminolevulinic acid. Although pyridoxine and Vitamin B 6 are still frequently used as synonyms, especially by medical researchers, this practice is erroneous and sometimes misleading (EE Snell; Ann NY Acad Sci, vol 585 pg 1, 1990).
A species of gram-positive, rod-shaped LACTIC ACID bacteria that is frequently used as starter culture in SILAGE fermentation, sourdough, and lactic-acid-fermented types of beer and wine.
An amino acid produced in the urea cycle by the splitting off of urea from arginine.
VITAMIN B 6 refers to several PICOLINES (especially PYRIDOXINE; PYRIDOXAL; & PYRIDOXAMINE) that are efficiently converted by the body to PYRIDOXAL PHOSPHATE which is a coenzyme for synthesis of amino acids, neurotransmitters (serotonin, norepinephrine), sphingolipids, and aminolevulinic acid. During transamination of amino acids, pyridoxal phosphate is transiently converted into PYRIDOXAMINE phosphate. Although pyridoxine and Vitamin B 6 are still frequently used as synonyms, especially by medical researchers, this practice is erroneous and sometimes misleading (EE Snell; Ann NY Acad Sci, vol 585 pg 1, 1990). Most of vitamin B6 is eventually degraded to PYRIDOXIC ACID and excreted in the urine.
An enzyme catalyzing the deamination of pyridoxaminephosphate to pyridoxal phosphate. It is a flavoprotein that also oxidizes pyridoxine-5-phosphate and pyridoxine. EC 22.214.171.124.
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