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Poster Display session 1

4075 - Loss of skeletal muscle mass during palliative chemotherapy is a poor prognostic factor in patients with advanced gastric cancer

Date

28 Sep 2019

Session

Poster Display session 1

Topics

Supportive Care and Symptom Management

Tumour Site

Presenters

In Gyu Hwang

Citation

Annals of Oncology (2019) 30 (suppl_5): v718-v746. 10.1093/annonc/mdz265

Authors

I.G. Hwang1, S.E. Park1, S. Lee2, J.H. Choi3

Author affiliations

  • 1 Internal Medicine, Chung-Ang University Hospital, 06973 - Seoul/KR
  • 2 Internal Medicine, Soonchunhyang University Hospital Cheonan, 31151 - Cheonan/KR
  • 3 Department Of Radiation Oncology, Chung-Ang University Hospital, 06973 - Seoul/KR

Resources

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Abstract 4075

Background

Cancer causes loss of muscle mass, which is associated with a poor prognosis. Chemotherapy could also reduce muscle mass. We investigated changes of skeletal muscle mass during palliative chemotherapy and its association of treatment outcomes in patients with advanced gastric cancer (AGC).

Methods

This retrospective study consisted of 91 consecutive patients who underwent first line palliative chemotherapy in AGC. Skeletal muscle area was measured at the level of the third lumbar vertebra using computed tomography scans taken before and after chemotherapy. We assessed changes in skeletal muscle index (SMI), body mass index (BMI), and body weight and compared the chemotherapy response and survival according to the changes of body composition.

Results

In total 91 patients, median age was 64 years (range, 31-87 years). 75.4% of patients were male and 45.1% were sarcopenia at baseline. Mean decrease of SMI from pre-chemotherapy to post-chemotherapy was -5.4 ± 5.3 cm2/m2 (P < 0.001), mean decrease of BMI was -0.6 ± 1.9 kg/m2 (p = 0.002), and mean decrease of body weight was -1.8 ± 5.3 kg (P = 0.002). Mean decrease of SMI for patient with objective response was -4.4 ± 5.4 cm2/m2, mean decrease of SMI with stable disease was -6.0 ± 5.2 cm2/m2 and mean decrease of SMI with progression was -5.4 ± 5.2 cm2/m2. Response to chemotherapy was not associated with decrease in SMI (p = 0.491). In multivariable analysis, sarcopenia at baseline (HR, 1.959; 95% CI, 1.190 to 3.225, p = 0.008), decreased SMI (HR, 1.747; 95% CI, 1.042 to 2.929; p = 0.034) and poor ECOG score (HR, 1.902; 95% CI, 1.081 to 3.346; p = 0.026) were significant poor prognostic factors for survival.

Conclusions

Skeletal muscle mass decreased significantly during chemotherapy in patients with AGC. However, response to chemotherapy was not associated with decrease in skeletal muscle mass. The decreased SMI was a poor prognostic factor in patients with AGC during first line palliative chemotherapy.

Clinical trial identification

Editorial acknowledgement

Legal entity responsible for the study

The authors.

Funding

Has not received any funding.

Disclosure

All authors have declared no conflicts of interest.

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