Serum Cardiolipin Antibodies in Cancer Patients with Thromboembolic Events

Author:

Ozgüroğlu Mustafa1,Arun Banu2,Erzin Yusuf1,Demir Gökhan1,Demirelli Fuat1,Molinas Mandel Nil1,Büyükünal Evin1,Serdengeçti Süheyla1,Berkarda Bülent1

Affiliation:

1. Department Internal Medicine, Section of Medical Oncology, Cerrahpaşa Medical School, Istanbul University, Istanbul, Turkey

2. Department of Internal Medicine, Division of Hematology/Oncology, University of Texas Southwestern Medical Center, Dallas, Texas, U.S.A.

Abstract

This study was undertaken to investigate a pos sible association of anticardiolipin antibodies (ACLAs) in can cer patients with thromboembolic events. Twenty-five patients with solid tumors complicated with acute thrombosis, 36 cancer patients without any thrombotic events, and a group of 20 healthy volunteers without thrombosis or malignancy were in cluded. The mean age of the cancer patients with and without thrombosis and healthy subjects were 50 years (range 20-75), 45 years (range 23-66), and 40 years (range 20-68), respec tively. Deep venous thrombosis (n = 16) and thrombosis of the central venous port-catheter systems (n = 9) were confirmed by Doppler sonography in all patients. IgG and IgM isotypes of ACLAs were quantitated by enzyme-linked immunosorbent as say with normal levels of <23 GPL and <11 MPL, respectively. Mean values of IgG ACLAs were found similar in cancer pa tients with acute thrombosis (13.8 ± 4.9 GPL), without throm bosis (12.8 ± 5.4 GPL) or in healthy subjects (14.8 ± 5.5 GPL). Although the mean values of IgM ACLAs were within normal limits in all groups, cancer patients with thrombotic events had higher levels of IgM ACLAs (mean = 10.5 ± 2.2 MPL) than cancer patients without thrombosis (mean = 4.6 ± 2.4 MPL) (p = .01). Healthy subjects also had lower levels of IgM ACLAs (mean = 7.1 ± 3.2 MPL) than cancer patients with thrombosis (p = .16). In addition, a higher percentage of cancer patients with or without thrombosis had IgM and IgG ACLA levels above normal limits compared with healthy controls. In con clusion, our study suggests an association between ACLAs or IgG and particularly IgM isotypes and venous thrombosis in malignancy. Identification of cancer patients who are at higher risk for developing thromboembolic events might lead to a better selection of patients for prophylactic anticoagulant therapy.

Publisher

SAGE Publications

Subject

Hematology,General Medicine

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