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Vol 4, No 3 (2019)
ORIGINAL ARTICLES
Published online: 2019-09-10
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Human Epidermal Growth Factor-2 Receptor [HER2] Status in Patients Aged 70 years or more with Operable Early Breast Cancer — Multicentre Based Study with Review of 150 Cases

Abdalla Saad Abdalla Al-Zawi, Mohammed Omer, Elizabeth Tan, Beata Adamczyk, Jessica English, Mohamed Elamass, Soad Eldruki
DOI: 10.5603/MRJ.a2019.0031
·
Medical Research Journal 2019;4(3):157-162.

open access

Vol 4, No 3 (2019)
ORIGINAL ARTICLES
Published online: 2019-09-10

Abstract

Background: Breast cancer is the most common invasive cancer in females but often has more favourable
tumour biology in the older age group. More than 30% of those diagnosed with breast cancer worldwide are
aged ≥ 65. Some report this percentage to be even higher, reaching up to more than 50% in developed
countries that have a longer overall life expectancy. Within this group, hormone receptor-positive and human epidermal growth factor-2 (HER-2) negative are the most favourable tumour biological patterns. In contrast, the triple-negative breast cancer group has the worst prognosis. Invasive breast cancers in younger age groups have a more poorly differentiated histological grade, more hormone receptor-negative status, a remarkable extent of lympho-vascular invasion and a greater expression/amplification of HER-2 than older age groups. HER-2 receptor is amplified and over-expressed in about 20–30% of invasive
breast cancers within all age groups. To analyse the status of HER-2 receptors early invasive breast cancer in relation to the histological subtype in the older age group.
Methods: The study group includes 150 patients with early breast cancer . The patho-morphological data and immune-histochemistry results of invasive cancer have been analysed, this included histology subtype,
grade, oestrogen/progesterone receptor status as well as HER-2 expression.
Results: HER-2 expression was only seen in 17% of cases, it was seen mainly in Grade 3 cancers (9%), followed by Grade 2 (6%), with Grade 1 cancer accounting for only 1% of the study group.
Conclusions: Patients with breast cancer aged ≥ 70 are seen to have less aggressive biology and expression
of HER-2 receptors.

Abstract

Background: Breast cancer is the most common invasive cancer in females but often has more favourable
tumour biology in the older age group. More than 30% of those diagnosed with breast cancer worldwide are
aged ≥ 65. Some report this percentage to be even higher, reaching up to more than 50% in developed
countries that have a longer overall life expectancy. Within this group, hormone receptor-positive and human epidermal growth factor-2 (HER-2) negative are the most favourable tumour biological patterns. In contrast, the triple-negative breast cancer group has the worst prognosis. Invasive breast cancers in younger age groups have a more poorly differentiated histological grade, more hormone receptor-negative status, a remarkable extent of lympho-vascular invasion and a greater expression/amplification of HER-2 than older age groups. HER-2 receptor is amplified and over-expressed in about 20–30% of invasive
breast cancers within all age groups. To analyse the status of HER-2 receptors early invasive breast cancer in relation to the histological subtype in the older age group.
Methods: The study group includes 150 patients with early breast cancer . The patho-morphological data and immune-histochemistry results of invasive cancer have been analysed, this included histology subtype,
grade, oestrogen/progesterone receptor status as well as HER-2 expression.
Results: HER-2 expression was only seen in 17% of cases, it was seen mainly in Grade 3 cancers (9%), followed by Grade 2 (6%), with Grade 1 cancer accounting for only 1% of the study group.
Conclusions: Patients with breast cancer aged ≥ 70 are seen to have less aggressive biology and expression
of HER-2 receptors.

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Keywords

breast cancer, HER-2 receptor, trastuzumab

About this article
Title

Human Epidermal Growth Factor-2 Receptor [HER2] Status in Patients Aged 70 years or more with Operable Early Breast Cancer — Multicentre Based Study with Review of 150 Cases

Journal

Medical Research Journal

Issue

Vol 4, No 3 (2019)

Pages

157-162

Published online

2019-09-10

DOI

10.5603/MRJ.a2019.0031

Bibliographic record

Medical Research Journal 2019;4(3):157-162.

Keywords

breast cancer
HER-2 receptor
trastuzumab

Authors

Abdalla Saad Abdalla Al-Zawi
Mohammed Omer
Elizabeth Tan
Beata Adamczyk
Jessica English
Mohamed Elamass
Soad Eldruki

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