Journals / Meme Sağlığı Dergisi / 2014 / Cilt: 10 - Sayı: 4

Meme Kanserinde Androjen Reseptörü, CK5/6, KI67 ve Moleküler Subtiplerin Klinik Önemi

Cinical Significance of Androgen Receptor, CK-5/6, KI-67 and Molecular Subtypes in Breast Cancer

Pages
201–208
DOI
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AI Summary & Key Takeaways

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⚡ TL;DR(Too Long; Didn't Read)

Androgen receptor is expressed more commonly in luminal subtypes with better prognosis and androgen receptor negativity is associated with development of local recurrence in luminal A cancers.

📌 3 Key Takeaways

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Objective & Hypothesis:Objective: To detect the relationship between molecular subtypes of breast cancer with expressions of androgen receptor, cytokeratin 5/6 (CK5/6)and Ki-67.
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Key Findings & Data:Materials and Methods: Expressions of androgen receptor, CK5/6 and Ki67 were determined by immunohistochemistry in paraffin-embedded sections obtained from 86 invasive breast cancer cases of stages I/IIa/IIb in 4 molecular subtypes.
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Conclusion & Impact:Androgen receptor is expressed more commonly in luminal subtypes with better prognosis and androgen receptor negativity is associated with development of local recurrence in luminal A cancers.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

Objective: To detect the relationship between molecular subtypes of breast cancer with expressions of androgen receptor, cytokeratin 5/6 (CK5/6)and Ki-67. Materials and Methods: Expressions of androgen receptor, CK5/6 and Ki67 were determined by immunohistochemistry in paraffin-embedded sections obtained from 86 invasive breast cancer cases of stages I/IIa/IIb in 4 molecular subtypes. Patients treated for recurrent disease and locally advanced disease were excluded. Results: Forty one luminal A cases, ie. positive estrogen receptor(ER) and/ or progesteron receptor (PR) with negative epidermal growth factor receptor (HER2), 14 luminal B, ie. positive ER and/or PR and positive HER2, 14 HER2-enriched (HER2+), ie. negative ER and PR with positive HER2, and 17 triple negative (negative ER and PR and HER2) invasive breast cancers were included. Mean follow-up was 17.46±11.70 mo. Androgen receptornegativity and CK5/6-positivity were significantly more common in HER2+ and triple negative groups. Ki-67 and histological grade were higher in HER2+ group, significantly. Two deaths were triple negative (P=0.04). Androgen receptor-negativity, CK5/6 and Ki-67 status did not affect survival or systemic metastases, significantly. All groups had local recurrences. Local recurrence was significantly associated with androgen receptor-negativity in luminal A and high Ki-67 value in HER2+ groups. Systemic metastases were significantly more common in triple negative and HER2+ groups. Conclusion: Molecular subtypes of breast cancer are prognostic and predictive. Androgen receptor is expressed more commonly in luminal subtypes with better prognosis and androgen receptor negativity is associated with development of local recurrence in luminal A cancers.

Özet

Amaç: Meme kanserinde moleküler subtipler ile androjen reseptörü, sitokeratin 5/6 (CK5/6), ve Ki67 ekspresyonunun klinik önemini değerlendirmek. Yöntem ve Gereçler: Dört moleküler subtipteki 86 Evre I/IIa/IIb invaziv meme kanseri vakasının parafin bloklarında immunhistokimya yöntemi ile androjen reseptörü, CK5/6 ve Ki-67 ekspresyonları belirlendi. Hastalık nüksü ve lokal ileri meme kanseri nedeniyle opere edilen vakalar çalışma dışı bırakıldı. Bulgular: Vakaların 41’i luminal A yani östrojen reseptörü (ER) ve/veya progesteron reseptörü (PR) pozitif ve epidermal büyüme faktör reseptörü (HER2) negatif, 14’ü luminal B (ER ve/veya PR pozitif ve HER2 pozitif), 14’ü HER2+ (ER ve/veya PR negatif ve HER2 pozitif) ve 17’si tripl negatif (ER/PR/HER2 negatif) idi. Ortalama takip süresi 17.46±11.70 aydı. Androjen reseptör negatifliği ve CK5/6 pozitifliği HER2 ve tripl negatif gruplarda daha sık görüldü. Ki-67 değeri ve histolojik grad HER2+ grupta daha yüksekti. İki eksitus vakası tripl negatifti. Androjen reseptör negatifliği, CK5/6 ve Ki67 statüsü ile sağ kalım ya da lokal nüks gelişimi arasında anlamlı ilişki bulunmadı. Tüm gruplarda lokal nüks vardı. Lokal nüks gelişimi luminal A grubunda androjen reseptör negatifliği ile ve HER2+ grupta ise Ki-67 yüksekliği ile ilişkili bulundu. Sistemik metastaz tripl negatif ve HER2+ gruplarda daha sık görüldü. Sonuç: Meme kanserinin moleküler subtipleri prognostik ve prediktiftir. Androjen reseptörü prognozu daha iyi olan luminal subtiplerde daha sık eksprese edilmekte ve luminal A kanserlerde androjen reseptör negatifliğinin lokal nüks gelişimi ile ilintili olduğu görülmektedir.

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Cite This Article

KAYAHAN, M., İDİZ, U. O., GÜCİN, Z., ERÖZGEN, F., MEMMİ, N., MÜSLÜMANOĞLU, M. (2014). Meme Kanserinde Androjen Reseptörü, CK5/6, KI67 ve Moleküler Subtiplerin Klinik Önemi. Meme Sağlığı Dergisi, Cilt: 10 - Sayı: 4, 201–208. https://ajindex.com/articles/278053

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