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Home > Androgen Receptor Expression and Associated Clinico-Pathologic Features in Primary Breast Cancer from Kenya

Androgen Receptor Expression and Associated Clinico-Pathologic Features in Primary Breast Cancer from Kenya

Thesis Info

Author

Chege, Joshua Kibera

Department

Pathology (East Africa)

Program

MMed

Institute

Aga Khan University

Institute Type

Private

City

Karachi

Province

Sindh

Country

Pakistan

Thesis Completing Year

2014

Thesis Completion Status

Completed

Subject

Medicine

Language

English

Added

2021-02-17 19:49:13

Modified

2024-03-24 20:25:49

ARI ID

1676728036695

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Introduction: Breast cancer is a heterogeneous group of diseases classified into various subtypes according to clinical, histological and molecular features as well as by the expression of prognostic and predictive biomarkers. New biomarkers are being studied which may be therapeutic targets in various breast cancer subtypes particularly triple-negative breast cancer. Recent studies show that androgen receptor (AR) expression can be used as a prognostic marker and there is evidence that anti-androgen therapy may be beneficial in oestrogen receptor negative breast cancer. Retrospective studies show that patients with breast cancers co-expressing androgen receptor and oestrogen receptor have a favourable prognosis and improved survival. On the other hand, oestrogen receptor-negative breast cancers which express the androgen receptor in the presence of the human epidermal growth factor-2 (HER2) over-expression are associated with an unfavourable prognosis. In addition there may be regional or even racial differences in the expression of the AR in breast cancer. The objective of this study was, therefore, to determine AR expression in breast cancers from Kenya and secondarily, to determine the association of AR expression with prognostic and predictive clinico-pathologic factors. Materials and Methods: The study was nested within a larger study based at AKUHN which is exploring the prevalence of triple-negative breast cancer in Kenya. Tissue blocks from 222 breast cancer specimens collected prospectively from September 2012 to March 2014 within the larger study were analysed for the presence of the androgen receptor. Tumour blocks were stained for AR on automated IHC platform. Nuclear staining of >10% was used as the cut-off for a positive AR stain. Clinical pathological features, including the ER/PR/HER2 status, were captured from data recorded in the larger study. Results: Of the total 222 cases of breast cancer analyzed for the androgen receptor, 78.8% were found to be positive for AR expression (confidence interval 72.86 – 84.01). A third of the triple-negative breast cancer cases (33%) and 94% of HER2 subtype breast cancer cases were positive for androgen receptor expression. Androgen receptor expression was significantly associated with estrogen receptor expression (p = 0.000001) and Her2 subtype of breast cancer (p = 0.04). Androgen receptor expression followed the age distribution of the sample population and tended to be inversely related to tumour grade. However these findings were not statistically significant. No association was found between androgen receptor expression, tumour stage, lymph node status or specimen type. Conclusions: The androgen receptor is expressed in 79% of
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نگارشاتِ راشد پر ایک طائرانہ نظر

نگارشاتِ راشد پر ایک طائرانہ نظر

محترم حافظ اکرم راشدؔ کی ایک کتاب ’’نگارشاتِ راشد‘‘ پر کچھ لکھنا مجھ جیسے اردو کے ادنیٰ طالب علم کے لیے ایسا ہی ہے جیسے سورج کو چراغ دکھا نا ہے ۔ راشد کے موضوعات کی حد مقرر کرنا ناممکن ہے ۔ وسیع مطالعے کے بعد کشید کیا ہوا مضامین کا یہ مجموعہ قاری کے لیے بہترین تحفہ ہے ۔ جس میں وہ دنیا کے ساتھ ساتھ دین کے مسائل کو بھی سمجھ سکتا ہے۔ راشد نے اسلام ، وطن، انسانیت ، اخلاقیات ، صحت، تعلیم ، سماج، معیشت اور دیگر شعبہ ہائے زندگی سے تعلق رکھنے والے موضوعات کوقلم بند کیا ہے ۔
اسلام کے حوالے سے کئی مضامین جن میں ’’ پیارے نبیصلی اللہ علیہ و آلہٖ وسلمکی پیاری باتیں ‘‘ اور ’’میلادُ النبیصلی اللہ علیہ و آلہٖ وسلم ‘‘ کے علاوہ کئی ایسے مضمون لکھے ہیں جن میں صحابہ کرام رضوان اللہ تعالیٰ اجمعین کی مبارک زندگیوں سے متعلق اہم واقعات بیان کیے ہیں ۔ تعلیم و تربیت کے حوالے سے ان کے مضامین حوالے کی چیز ہیں ۔ انھوں نے تعلیم کی اہمیت و افادیت کے حوالے سے کئی مضامین قلم بند کئے ہیں جن میں علم کی روح تک پہنچنے کے لیے افکار واضح کیے ہیں۔ اسی طرح ان کے مضامین اخلاقیات ، صحت اور جدید سائنس کے حوالے سے بھی اردو کا نایاب سرمایہ ہیں ۔ ان مضامین کو پڑھ کر اور ان پر عمل کر کے معاشرے میں عزت و وقار کے ساتھ زندگی گزاری جا سکتی ہے ۔
حافظ محمد اکرم راشدؔ ایک اچھے اور سچے مسلمان اور پاکستانی ہیں جن کے دل میں مسلمانوں کی اصلاح اور ہمدردی کا جذبہ کوٹ کوٹ کر بھرا ہوا ہے ۔ جس کا واضح ثبوت ان کی کتاب ’’ نگارشاتِ راشد‘‘...

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