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Article History

Received: 10 December 2020

Revised: 12 April 2021

Accepted: 18 April 2021

First Online: 27 April 2021

Compliance with ethical standards

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: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institution and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.

: Manuel Pombo-Suarez: consulting fee from MSD; Blanca Garcia-Magallón: payments for consultancy, lectures, presentations, or travel expenses by MSD, Pfizer, Bristol-Myers, Amgen, Celgene, and Menarini; Sara Manrique-Arija: payments for consultancy, lectures, presentations, or travel expenses by Abbvie, Janssen, Sanofi, Novartis, Pfizer, Lilly, MSD, and Menarini; José Campos: payments for consultancy, lectures, presentations, or travel expenses by Pfizer, MSD, Novartis, Lilly, Roche, and Sanofi; Maria J. Arteaga: full-time employee at Medical Affairs, MSD, Spain; Luis Cea-Calvo: full-time employee at Medical Affairs, MSD, Spain; Federico Díaz-González: grant from MSD; Juan J. Gómez-Reino: payments for consultancy, lectures, and grants from MSD. The rest of the authors declared no conflict of interest.

: All patients signed informed consent to be included in the BIOBADASER registry. Informed consent included consent for subsequent analysis, such as in the present analysis. Patients’ information was managed as anonymized aggregated data, and as approved by the Clinical Research Committee, specific informed consent for this analysis was not required.