Cardiac toxicity events in the PHARE trial, an adjuvant trastuzumab randomised phase III study.

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Date publication

juillet 2015

Auteurs

Membres identifiés du Cancéropôle Est :
Pr FUMOLEAU Pierre, Pr PIVOT Xavier


Tous les auteurs :
Pivot X, Suter T, Nabholtz JM, Pierga JY, Espie M, Lortholary A, Khayat D, Pauporte I, Romieu G, Kramar A, Fumoleau P

Résumé

BACKGROUND: This article reports, the cardiac toxicity according to 6- versus 12-month durations of adjuvant trastuzumab in PHARE randomised trial (NCT00381901). PATIENTS AND METHODS: Cardiac follow-up and Left Ventricular Ejection Fraction (LVEF) assessment by echocardiography or multigated acquisition scan were performed every 3months while patients received trastuzumab and after completion of treatment over the first 2years and every 6months afterwards. The primary cardiac end-point was Cardiac Heart Failure (CHF) defined as New York Heart Association (NYHA) class III or IV. The secondary cardiac end-points were: cardiac events, cardiac dysfunctions defined by NYHA class I and II; LVEF decreases, cardiac recoveries. The cardiac subcommittee reviewed cardiac events and assessed if patients had favourable outcomes or not on the basis of trends from LVEF measurements. RESULTS: Among 3380 patients the cardiac dysfunction assessment included 14,055 and 13,218 LVEF measurements in the 12- and 6-month arms. The overall incidences of CHF were 0.65% (11/1690) and 0.53% (9/1690) in the 12 and 6month arms, respectively (p>0.05). Cardiac dysfunction occurred in 5.9% (100/1690) and 3.4% (58/1690) of patients in the 12 and 6month arms, respectively (p=0.001). Recoveries were observed for the majority patients and 0.79% (27/3380) of patients experienced an unfavourable cardiac outcome. CONCLUSION: PHARE confirm that the incidence of cardiac end-points remains low and mostly reversible after trastuzumab. Identification at baseline of cardiac risk categories of patients should be of interest to provide an optimal adaptation of adjuvant modalities and a shorter duration might be an option.

Référence

Eur J Cancer. 2015 Jul 7. pii: S0959-8049(15)00499-2