Hamostaseologie 2020; 40(05): 662-670
DOI: 10.1055/a-1223-3367
Original Article

Antiphospholipid Antibodies Are Not Associated with Clinical Parameters or Prognostic Outcomes in Patients with Non-Hodgkin's Lymphoma

Rimesh Pal
1   Department of Internal Medicine, Postgraduate Institute of Medical Education and Research, Chandigarh, India
,
Subhash Varma
1   Department of Internal Medicine, Postgraduate Institute of Medical Education and Research, Chandigarh, India
,
Jasmina Ahluwalia
2   Department of Hematology, Postgraduate Institute of Medical Education and Research, Chandigarh, India
,
Gaurav Prakash
1   Department of Internal Medicine, Postgraduate Institute of Medical Education and Research, Chandigarh, India
› Author Affiliations
Funding Sources None.

Abstract

Background Antiphospholipid antibodies (APAs) are found quite frequently in patients with non-Hodgkin’s lymphoma (NHL). However, the clinical significance of these antibodies is largely unknown. This study aims to delineate the clinical and prognostic role of APAs in NHL patients.

Patients and Methods  Consecutive patients of NHL were screened for lupus anticoagulant (LA), IgG/IgM anticardiolipin antibody, and IgG/IgM anti-β2-glycoprotein I at the time of diagnosis. Baseline investigations, staging, and treatment were done as per institutional protocol. Patients were followed up until the last known outpatient visit or death. All were screened at each visit for any thromboembolic event. The association of APA status with baseline NHL characteristics and treatment response was evaluated by univariate analysis. Kaplan–Meier survival analysis was used to compare the final outcome in patients with or without APAs. Patients who were initially APA positive were retested for the corresponding antibody at the end of chemotherapy.

Results Twenty-four out of 105 patients (22.8%) were APA positive at diagnosis. The presence of APA was not significantly associated with NHL stage, histology, International Prognostic Index score, activated partial thromboplastin time, or treatment response. The median duration of follow-up was 15 months. Only four patients developed venous thrombosis; none was APA positive. There was no statistically significant difference in overall survival between the two groups (p = 0.471). Patients, who were APA positive initially, tested negative at the end of treatment, irrespective of treatment response.

Conclusion APAs are encountered more frequently in NHL patients than in the general population. However, APAs do not correlate with disease severity, thrombosis risk, treatment outcome, or overall survival.

Zusammenfassung

Antiphospholipid-Antikörper (APAs) treten häufig bei Non-Hodgkin-Lymphom-Patienten (NHL) auf, ihre genaue Rolle ist jedoch unklar. Wir verfolgten prospektiv 105 NHL-Patienten über eine mittlere Dauer von 15 Monaten. Antiphospholipid-Antikörper wurden bei 22,8% der NHL-Patienten nachgewiesen, eine Prävalenzrate, die viel höher ist als die der Allgemeinbevölkerung. Neunzehn (79%) waren positiv für einen einzelnen Antikörper, während fünf (21%) positiv für zwei Antikörper waren. Anti-β2-Glykoprotein I war das am häufigsten nachgewiesene APA, gefolgt von Lupus-Antikoagulans und Anti-Cardiolipin-Antikörper. Die mittlere aktivierte partielle Thromboplastinzeit unterschied sich nicht zwischen den APA-positiven und den APA-negativen Gruppen. Nur 4 Patienten (3,8%) hatten eine Venenthrombose entwickelt; Keiner war positiv für APAs. Der Status des Antiphospholipid-Antikörpers korrelierte nicht mit dem Krankheitsstadium, der Histologie, dem International Prognostic Index oder dem Ansprechen auf die Behandlung. Die Kaplan-Meier-Überlebensanalyse zeigte keinen statistisch signifikanten Überlebensunterschied zwischen APA-positiven und APA-negativen Patienten. Es wurde festgestellt, dass nur der Leistungsstatus das Überleben signifikant vorhersagt.

Conflict of Interest

The authors have no conflicts of interest to declare.


Supplementary Material



Publication History

Received: 29 April 2020

Accepted: 20 July 2020

Article published online:
15 September 2020

© 2020. Thieme. All rights reserved.

Georg Thieme Verlag KG
Rüdigerstraße 14, 70469 Stuttgart, Germany

 
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