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Media type:
E-Article
Title:
Association between body mass index and mortality in patients with glioblastoma mutliforme
Contributor:
Jones, Lee W.;
Ali-Osman, Francis;
Lipp, Eric;
Marcello, Jennifer E.;
McCarthy, Bridget;
McCoy, Lucie;
Rice, Terri;
Wrensch, Margaret;
Il'yasova, Dora
imprint:
Springer, 2010
Published in:Cancer Causes & Control
Language:
English
ISSN:
0957-5243;
1573-7225
Origination:
Footnote:
Description:
<p>Purpose To examine the association between obesity and survival in patients with glioblastoma mutliforme (GBM) Methods Using a prospective design, 1,259 patients with previously untreated GBM were recruited between 1991 and 2008. Height and weight were self-reported or abstracted from medical records at study entry and used to calculate body mass index (BMI) [weight (kg)/[height (m)]². Cox proportional models were used to estimate the risk of death associated with BMI as a continuous variable or categorized using established criteria (normal weight, 18.5-24.9 kg/m²; overweight, 25.0-29.9 kg/m²; obese, ≥30.0 kg/m²). Results Median follow-up was 40 months, and 1,069 (85%) deaths were observed during this period. For all patients, minimal adjusted analyses indicated no significant association between BMI treated as a continuous variable and survival. Compared with patients with a BMI 18.5-24.9 kg/m², the minimally adjusted HR for overall survival was 1.08 (95% CI, 0.94-1.24) for a BMI 25-29.9 kg/m² and 1.08 (95% CI, 0.91-28) for a BMI ≥ 30.0 kg/m². After additional adjustment for adjuvant therapy, the HR for those with a BMI of 25.0-29.9 kg/m² was 1.14 (95% CI, 0.99-1.32) and 1.09 (95% CI, 0.91-1.30) for those with a BMI ≥ 30.0 kg/m². No significant interactions were revealed for BMI and any demographic variables. Conclusion BMI was not associated with survival in newly diagnosed and previously untreated patients with GBM. Further research investigating the prognostic significance of alternative, quantitative measures of body habitus, and functional performance are required.</p>