Footnotes

• Handling editor Josef S Smolen

• Presented at Manuscripts based on work previously presented at the following conferences and published as a conference abstract.

  ACR 2018: https://acrabstracts.org/abstract/clinical-outcomes-and-response-to-anti-thrombotic-treatment-among-patients-with-concomitant-lupus-nephritis-and-thrombotic-microangiopathy-a-multicenter-cohort-study/?msg=fail&shared=email

  EULAR 2018: https://web.eular.org/EULAR_Production/2018_Amsterdam.nsf/fmWebPGMbyDayPublic?OpenForm https://web.eular.org/EULAR_Production/2018_Amsterdam.nsf/fmWebPGMbyDayPublic?OpenForm.

• Contributors All the authors made substantial contributions to the conception and design of the work, the acquisition, analysis and interpretation of data. They all parteciapted to drafting the work or revising it critically for important intellectual content. All the authors gave the final approval of the version submitted.

• Funding The authors have not declared a specific grant for this research from any funding agency in the public, commercial or not-for-profit sectors.

• Competing interests None declared.

• Patient consent for publication Not required.

• Provenance and peer review Not commissioned; externally peer reviewed.