Post-Authorisation Safety Study (PASS) to Evaluate the Risk of Malignancies in Patients with Myasthenia Gravis (MG) Treated with Efgartigimod

03/02/2026
03/02/2026
EU PAS number:
EUPAS1000000915
Study
Planned
Study identification

EU PAS number

EUPAS1000000915

Study ID

1000000915

Official title and acronym

Post-Authorisation Safety Study (PASS) to Evaluate the Risk of Malignancies in Patients with Myasthenia Gravis (MG) Treated with Efgartigimod

DARWIN EU® study

No

Study countries

France
United Kingdom
United States

Study description

This is a multinational, longitudinal database cohort study which aims to assess the risk of malignancy in patients with MG exposed to at least one dose of efgartigimod compared to MG patients with no record of exposure to efgartigimod by analysing data from three claims databases. The reference cohort will consist of patients with a diagnosis code for MG without efgartigimod exposure but are on any other therapy for the treatment of MG during the study period.
Patients will be followed from study entry to at least 10 years following inclusion in the study.

Study status

Planned
Research institutions and networks

Institutions

argenx BV

Contact details

argenx BV

Primary lead investigator

Study timelines

Date when funding contract was signed

Actual:

Study start date

Planned:

Data analysis start date

Planned:

Date of final study report

Planned:
Regulatory

Was the study required by a regulatory body?

Yes

Is the study required by a Risk Management Plan (RMP)?

EU RMP category 3 (required)