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Obezitenin HER-2 pozitif meme kanseri hastalarında adjuvan trastuzumab tedavisi ile ilişkili olarak tümör nüksüne etkisi

Year 2013, Issue: 1, 5 - 11, 01.04.2013

Abstract

Amaç: Humanize monoklonal bir antikor olan trastuzumabın, HER-2 pozitif erken evre meme kanseri tanılı kadınlarda
sağkalımı uzattığı gösterilmiştir. Retrospektif olarak HER-2 pozitif meme kanserinde trastuzumabın etkisinin obezite ile
değişip değişmediğini araştırdık.
Gereç ve yöntem: HER-2 pozitif 170 hastanın 129’unun verilerine ulaşılabildi ve 114 hastanın istatistik analiz için kayıtlardan
bulunabilen boy/kilo ölçümleri elde edilebildi. Bu hastalardan vücut kitle indeksi (VKİ) <30 kg/m2 olan grupta 68 (60%) hasta
ve ≥30 kg/m2 olan grupta 46 (40%) hasta mevcuttu.
Bulgular: Progresyonsuz sağkalım VKİ<30 kg/m2 olan grupta 8.8 ± 6.5 ay iken, VKİ≥30 kg/m2 grupta 78.09 ± 12.43 ay
olarak hesaplandı ve aradaki fark istatistiksel olarak anlamlı değildi (p=0.32). Trastuzumab verilen 95 hastanın 7’sinde
(%7.4) progresyon saptanırken, verilmeyen grupta 34 hastanın 13’ünde (%38.2) progresyon mevcuttu. Aradaki fark
istatistiksel olarak anlamlıydı (p<0.001). Karsinoma insitu saptanan 53 hastanın 32’si VKİ<30 kg/m2 olan grupta, 21’I
de VKİ ≥ 30 kg/m2 olan grupta idi. Cox regresyon analizinde ise sadece karsinoma insitu varlığı ile progresyonsuz
sağkalım arasında anlamlı ilişki mevcuttu. [HR 0.44 (95% CI 1.05-34.28, p=0.044)]. Trastuzumab tedavisi ile tümör
çapı (p=0.04), hormone reseptör pozitiflik durumu ile progresyonsuz sağkalım arasında anlamlı ilişki saptandı
(p=0.002). Ayrıca, hormone reseptör negatif olan hastalarda Trastuzumab almadıkları takdirde, nüks riskinin 7.6 kat
arttığı saptandı. Takip süresi median 24 ay (sınırlar 3-257 ay) olup, 20 hastada (%15.5) nüks saptandı. Takipte 5 hasta
ex oldu. Tüm hasta grubunda Trastuzumab kullanımı ve karsinoma insitu varlığı progresyonsuz sağkalımla ilişkili idi.
Hormon reseptör negatifliği ve progresyonsuz sağkalım obez hastalarda daha uzundu ama aradaki fark anlamlı değildi
(p =0.659).
Sonuç: Trastuzumab, meme kanserinde özellikle hormon reseptör negatif olan hastalarda progresyonu önlemede etkili
bulundu.
Pam Tıp Derg 2013;6(1):5-11

The influence of obesity on the recurrence of cancer in HER-2 positive breast cancer patients related to adjuvant trastuzumab treatment

Year 2013, Issue: 1, 5 - 11, 01.04.2013

Abstract

Purpose: Trastuzumab, a humanized monoclonal antibody, was shown to prolong survival in female HER-2 positive early
stage breast cancer patients. We examined whether obesity had an influence on the recurrences of HER-2 positive patients,
as related to adjuvant trastuzumab treatment, retrospectively.
Materials and methods: Among HER-2 positive 170 patients, 129 had accessible data, and with 114, recorded weight /
height measurements were statistically analyzed.
Results: Of these, the body mass index (BMI) was <30 kg/m2 in 68 (60%), and ≥30 kg/m2 in 46 (40%). Recurrence-free
survival (RFS) was 8.8 ± 6.5 and 78.09 ± 12.43 months in the groups with low and high BMI, respectively (p=0.32). Recurrences
were found in 7 of 95 (7.4%) receiving Trastuzumab and 13 of 34 patients (38.2%) not receiving. The difference was significant
(p<0.001). We detected that 53 patients have a carcinoma insitu on the pathological report (32 patients were BMI<30 kg/
m2 group and 21 patients were BMI ≥ 30 kg/m2 group). Cox regression analysis showed that only presence of carcinoma in
situ was significant for PFS, in the population of the study, HR 0.44 (95% CI 1.05-34.28, p=0.044). There was a significant
relationship favoring trastuzumab treatment between size of tumor (p=0.04) and hormone receptor positivity with RFS
(p =0.002). Moreover, in the hormone receptor negative group, the risk of recurrence was 7.6 folds in the absence of
trastuzumab treatment. Median follow-up was 24 months (range 3-257) and recurrence was found in 20 patients (15.5 %). Five
patients died during follow-up. Presence of carcinoma-in-situ and use of Trastuzumab had influenced RFS in the population
of the study. Rate of hormone receptor negativity was higher and RFS was longer in obese patients than non-obese patients;
however, the difference was not significant (p =0.659).
Conclusion: Trastuzumab is effective in breast cancer patients to prevent the recurrence, particularly in hormone receptor
negative patients.
Pam Med J 2013;6(1):5-11

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Details

Other ID JA43PD77YC
Journal Section Research Article
Authors

Gamze Gököz Doğu This is me

Aysegül Kargı This is me

Arzu Yaren This is me

Burcu Yapar Taşköylü This is me

A. Gökcen Demiray This is me

Publication Date April 1, 2013
Submission Date April 1, 2013
Published in Issue Year 2013 Issue: 1

Cite

APA Gököz Doğu, G., Kargı, A., Yaren, A., Yapar Taşköylü, B., et al. (2013). The influence of obesity on the recurrence of cancer in HER-2 positive breast cancer patients related to adjuvant trastuzumab treatment. Pamukkale Medical Journal(1), 5-11.
AMA Gököz Doğu G, Kargı A, Yaren A, Yapar Taşköylü B, Demiray AG. The influence of obesity on the recurrence of cancer in HER-2 positive breast cancer patients related to adjuvant trastuzumab treatment. Pam Med J. April 2013;(1):5-11.
Chicago Gököz Doğu, Gamze, Aysegül Kargı, Arzu Yaren, Burcu Yapar Taşköylü, and A. Gökcen Demiray. “The Influence of Obesity on the Recurrence of Cancer in HER-2 Positive Breast Cancer Patients Related to Adjuvant Trastuzumab Treatment”. Pamukkale Medical Journal, no. 1 (April 2013): 5-11.
EndNote Gököz Doğu G, Kargı A, Yaren A, Yapar Taşköylü B, Demiray AG (April 1, 2013) The influence of obesity on the recurrence of cancer in HER-2 positive breast cancer patients related to adjuvant trastuzumab treatment. Pamukkale Medical Journal 1 5–11.
IEEE G. Gököz Doğu, A. Kargı, A. Yaren, B. Yapar Taşköylü, and A. G. Demiray, “The influence of obesity on the recurrence of cancer in HER-2 positive breast cancer patients related to adjuvant trastuzumab treatment”, Pam Med J, no. 1, pp. 5–11, April 2013.
ISNAD Gököz Doğu, Gamze et al. “The Influence of Obesity on the Recurrence of Cancer in HER-2 Positive Breast Cancer Patients Related to Adjuvant Trastuzumab Treatment”. Pamukkale Medical Journal 1 (April 2013), 5-11.
JAMA Gököz Doğu G, Kargı A, Yaren A, Yapar Taşköylü B, Demiray AG. The influence of obesity on the recurrence of cancer in HER-2 positive breast cancer patients related to adjuvant trastuzumab treatment. Pam Med J. 2013;:5–11.
MLA Gököz Doğu, Gamze et al. “The Influence of Obesity on the Recurrence of Cancer in HER-2 Positive Breast Cancer Patients Related to Adjuvant Trastuzumab Treatment”. Pamukkale Medical Journal, no. 1, 2013, pp. 5-11.
Vancouver Gököz Doğu G, Kargı A, Yaren A, Yapar Taşköylü B, Demiray AG. The influence of obesity on the recurrence of cancer in HER-2 positive breast cancer patients related to adjuvant trastuzumab treatment. Pam Med J. 2013(1):5-11.

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