Response to second-line hormone treatment for advanced breast cancer. Predictive value of ploidy determination.

Abstract:

:Twenty-two patients who previously responded to first-line hormonal therapy were evaluated for factors which would predict for response to second hormonal manipulation. Investigations performed at progression after initial hormone response included immunocytochemical estimation of estrogen and progesterone receptors as well as flow cytometric analysis of tumor ploidy. Approximately 50% of patients were found still to be estrogen receptor positive at relapse from first-line hormone treatment. Progesterone receptor had, however, usually become negative. Nine of the 22 patients responded to second-line hormonal therapy. Second hormone responses occurred with equal frequency among hormone receptor-positive and hormone receptor-negative patients. Tumor ploidy, as determined by flow cytometric study did, however, predict for response. Eight of 12 patients with diploid tumors responded to second-line hormone therapy whereas only one of ten with aneuploid tumors responded. Flow cytometric analysis appears to be a promising technique for prediction of second hormone response after relapse from first-line hormone manipulation.

journal_name

Cancer

journal_title

Cancer

authors

Seymour L,Bezwoda WR,Meyer K

doi

10.1002/1097-0142(19900615)65:12<2720::aid-cncr282

subject

Has Abstract

pub_date

1990-06-15 00:00:00

pages

2720-4

issue

12

eissn

0008-543X

issn

1097-0142

journal_volume

65

pub_type

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