Background: Prior work suggests that patients with vitamin D insufficiency may have a higher risk of chemotherapy-induced peripheral neuropathy (CIPN) from paclitaxel. The objective of this study was to validate vitamin D insufficiency as a CIPN risk factor. Methods: We used data and samples from the prospective phase III SWOG S0221 (ClinicalTrials.gov identifier: NCT00070564) trial that compared paclitaxel-containing chemotherapy regimens for early-stage breast cancer. We quantified pretreatment 25-hydroxy-vitamin D in banked serum samples using a liquid chromatography-tandem mass spectrometry targeted assay. We tested the association between vitamin D insufficiency (≤20 ng/mL) and grade ≥3 sensory CIPN via multiple logistic regression and then adjusted for self-reported race, age, body mass index, and paclitaxel schedule (randomization to weekly or every-2-week dosing). We also tested the direct effect of vitamin D deficiency on mechanical hypersensitivity in mice randomized to a regular or vitamin D–deficient diet. Results: Of the 1,191 female patients in the analysis, 397 (33.3%) had pretreatment vitamin D insufficiency, and 195 (16.4%) developed grade ≥3 CIPN. Patients with vitamin D insufficiency had a higher incidence of grade ≥3 CIPN than those who had sufficient vitamin D (20.7% vs 14.2%; odds ratio [OR], 1.57; 95% CI, 1.14–2.15; P=.005). The association retained significance after adjusting for age and paclitaxel schedule (adjusted OR, 1.65; 95% CI, 1.18–2.30; P=.003) but not race (adjusted OR, 1.39; 95% CI, 0.98–1.97; P=.066). In the mouse experiments, the vitamin D–deficient diet caused mechanical hypersensitivity and sensitized mice to paclitaxel (both P<.05). Conclusions: Pretreatment vitamin D insufficiency is the first validated potentially modifiable predictive biomarker of CIPN from paclitaxel. Prospective trials are needed to determine whether vitamin D supplementation prevents CIPN and improves treatment outcomes in patients with breast and other cancer types.
Vitamin D Insufficiency as a Risk Factor for Paclitaxel-Induced Peripheral Neuropathy in SWOG S0221
Ciao-Sin Chen, Gary Zirpoli, William E. Barlow, G. Thomas Budd, Bryan McKiver, Lajos Pusztai, Gabriel N. Hortobagyi, Kathy S. Albain, M. Imad Damaj, Andrew K. Godwin, Alastair Thompson, N. Lynn Henry, Christine B. Ambrosone, Kathleen A. Stringer, and Daniel L. Hertz
NCCN Guidelines Insights: Bone Cancer, Version 2.2017
J. Sybil Biermann, Warren Chow, Damon R. Reed, David Lucas, Douglas R. Adkins, Mark Agulnik, Robert S. Benjamin, Brian Brigman, G. Thomas Budd, William T. Curry, Aarati Didwania, Nicola Fabbri, Francis J. Hornicek, Joseph B. Kuechle, Dieter Lindskog, Joel Mayerson, Sean V. McGarry, Lynn Million, Carol D. Morris, Sujana Movva, Richard J. O'Donnell, R. Lor Randall, Peter Rose, Victor M. Santana, Robert L. Satcher, Herbert Schwartz, Herrick J. Siegel, Katherine Thornton, Victor Villalobos, Mary Anne Bergman, and Jillian L. Scavone
The NCCN Guidelines for Bone Cancer provide interdisciplinary recommendations for treating chordoma, chondrosarcoma, giant cell tumor of bone, Ewing sarcoma, and osteosarcoma. These NCCN Guidelines Insights summarize the NCCN Bone Cancer Panel's guideline recommendations for treating Ewing sarcoma. The data underlying these treatment recommendations are also discussed.