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Circulating tumour cell enumeration does not correlate with Miller-Payne grade in a cohort of breast cancer patients undergoing neoadjuvant chemotherapy.


ABSTRACT: PURPOSE:The association between pathological complete response (pCR) in patients receiving neoadjuvant chemotherapy (NAC) for breast cancer and Circulating Tumour Cells (CTCs) is not clear. The aim of this study was to assess whether CTC enumeration could be used to predict pathological response to NAC in breast cancer as measured by the Miller-Payne grading system. METHODS:Twenty-six patients were recruited, and blood samples were taken pre- and post-NAC. CTCs were isolated using the ScreenCell device and stained using a modified Giemsa stain. CTCs were enumerated by 2 pathologists and classified as single CTCs, doublets, clusters/microemboli and correlated with the pathological response as measured by the Miller-Payne grading system. ?2 or ANOVA was performed in SPSS 24.0 statistics software for associations. RESULTS:89% of patients had invasive ductal carcinoma (IDC) and 11% invasive lobular carcinoma (ILC). At baseline 85% of patients had CTCs present, median 7 (0-161) CTCs per 3 ml of whole blood. Post-chemotherapy, 58% had an increase in CTCs. This did not correlate with the Miller-Payne grade of response. No significant association was identified between the number of CTCs and clinical characteristics; however, we did observe a correlation between pre-treatment CTC counts and body mass index, p?

SUBMITTER: O'Toole SA 

PROVIDER: S-EPMC7220879 | biostudies-literature | 2020 Jun

REPOSITORIES: biostudies-literature

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Circulating tumour cell enumeration does not correlate with Miller-Payne grade in a cohort of breast cancer patients undergoing neoadjuvant chemotherapy.

O'Toole Sharon A SA   Spillane Cathy C   Huang Yanmei Y   Fitzgerald Marie C MC   Ffrench Brendan B   Mohamed Bashir B   Ward Mark M   Gallagher Michael M   Kelly Tanya T   O'Brien Cathal C   Ruttle Carmel C   Bogdanska Anna A   Martin Cara C   Mullen Dorinda D   Connolly Elizabeth E   McGarrigle Sarah A SA   Kennedy John J   O'Leary John J JJ  

Breast cancer research and treatment 20200506 3


<h4>Purpose</h4>The association between pathological complete response (pCR) in patients receiving neoadjuvant chemotherapy (NAC) for breast cancer and Circulating Tumour Cells (CTCs) is not clear. The aim of this study was to assess whether CTC enumeration could be used to predict pathological response to NAC in breast cancer as measured by the Miller-Payne grading system.<h4>Methods</h4>Twenty-six patients were recruited, and blood samples were taken pre- and post-NAC. CTCs were isolated using  ...[more]

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