Journals / KONURALP TIP DERGİSİ / 2018 / Cilt: 10 - Sayı: 3

Ki-67 Labeling Index in Patients with Estrogen-Progesterone Positive and Axillary Lymph Node Negative Breast Cancer

Östrojen-Progesteron Reseptörü Pozitif ve Aksiller Lenf Nodu Negatif Meme Kanseri Tanılı Hastalarda Ki-67 Proliferasyon İndeksi

Pages
387–394
DOI
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

The 7-year overall survival was 97.1% in the group with Ki-67 labeling index below 20%, while it was 90.9% in the group above the 20% value (p=0.042).

📌 3 Key Takeaways

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Objective & Hypothesis:Objective: Ki67 is a nuclear protein that is expressed in all phases of the cell cycle except for G0.
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Key Findings & Data:It has been shown that Ki-67 labeling index is associated with poor clinical outcome in patients with breast cancer.
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Conclusion & Impact:The 7-year overall survival was 97.1% in the group with Ki-67 labeling index below 20%, while it was 90.9% in the group above the 20% value (p=0.042).
🔬Design:Research Article
📍Scope:2006-2014 Verileri
⚙️Variables:Meme kanseri · Ki-67 proliferasyon indeksi · prognoz

Abstract

Objective: Ki67 is a nuclear protein that is expressed in all phases of the cell cycle except for G0. It is used as a marker to detect the proliferating cells. It has been shown that Ki-67 labeling index is associated with poor clinical outcome in patients with breast cancer. In this study, we aimed to evaluate the prognostic significance of Ki-67 labeling index in patients with estrogen receptor and progesterone receptor positive, HER-2 negative and axillary lymph node negative breast cancer.Methods: Patients diagnosed with breast cancer during 2006-2014, and who were followed up in the medical oncology clinic were included in the study. Immunohistochemically, nuclear Ki-67 proliferation index was evaluated. The relationship with other clinicopathologic prognostic factors was evaluated.Results: 162 patients were included in the study. In a median 85 (9-132)-months follow-up, local recurrence was detected in 2(1.2%) patients and distant metastasis was detected in 7(4.3%) patients. Eight (4.9%) patients died. Patients were divided into two groups using 20% cut-off value for Ki-67 labelling index, obtained by Roc curve analysis. The 7-year overall survival was 97.1% in the group with Ki-67 labeling index below 20%, while it was 90.9% in the group above the 20% value (p=0.042). Ki-67 labeling index showed positive correlation with tumor histological grade, and pathologic tumor size, and negative correlation with hormone receptors.Conclusion: Proliferation is an important indicator for predicting prognosis and treatment response in breast cancer. Ki-67 labeling index is used to determine prognosis along with other clinicopathological prognostic factors, although there is no standard cut-off value and no standard of assessment and no standard in scoring methodology.

Özet

Amaç: Ki-67 hücre siklusunda G0 fazı dışında eksprese edilen nükleer bir proteindir. Prolifere olan hücreleri gösteren belirteç olarak kullanılmaktadır. Meme kanseri tanılı hastalarda Ki-67 proliferasyon indeksinin kötü klinik sonuçlarla ilişkili olduğu gösterilmiştir. Bu çalışmada östrojen reseptörü ve progesteron reseptörü pozitif, HER-2 negatif, aksiller lenf nodu tutulumu bulunmayan meme kanseri tanılı hastalarda Ki-67 proliferasyon indeksinin prognostik öneminin değerlendirilmesi amaçlanmıştır.Gereç ve Yöntem: 2006-2014 yılları arasında tanı konulan ve tıbbi onkoloji kliniğinde izlemi bulunan opere meme kanseri tanılı hastalar çalışmaya dahil edildi. İmmunohistokimyasal olarak nükleer Ki-67 proliferasyon indeksi değerlendirildi. Diğer klinikopatolojik prognostik faktörlerle ilişkisi değerlendirildi.Bulgular: 162 hasta çalışmaya dahil edildi. Medyan 85 (9-132) aylık izlemde 2 (%1.2) hastada lokal nüks, 7 (%4.3) hastada uzak metastaz saptandı. Sekiz (%4.9) hasta vefat etti. Ki-67 proliferasyon indeksine göre Roc curve analizinde elde edilen %20 değerine göre hastalar iki gruba ayırıldı. Ki-67 proliferasyon indeksi %20’nin altında ve üzerinde olan gruplarda 7 yıllık genel sağkalımlar sırasıyla %97.1 ve %90.9 olarak hesaplandı (p0.042). Ki-67 proliferasyon indeksinin tümör histolojik derecesi, patolojik tümör boyutu ile pozitif korelasyon, hormon reseptörleri ile negatif korelasyon gösterdiği saptandı.Sonuç: Proliferasyon meme kanserinde prognoz ve tedavi yanıtını predikte etmek için kullanılan önemli bir göstergedir. Ki-67 proliferasyon indeksi için standart eşik değeri bulunmaması, değerlendirme ve skorlama metodolojisinde standart olmamasına rağmen diğer klinikopatolojik prognostik göstergelerle birlikte prognoz belirlenmesinde kullanılmaktadır.

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Cite This Article

KÜÇÜKZEYBEK, B. B., TAŞKAYNATAN, H., SARI, A. A., YİĞİT, S., BALLI, G., ETİT, D., YAZICI, A., ATAHAN, M. K., BÜYÜKTALANCI, D. Ö., ALACACIOĞLU, A., KÜÇÜKZEYBEK, Y. (2018). Ki-67 Labeling Index in Patients with Estrogen-Progesterone Positive and Axillary Lymph Node Negative Breast Cancer. KONURALP TIP DERGİSİ, Cilt: 10 - Sayı: 3, 387–394. https://ajindex.com/articles/200061

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