Brief: ArgenX Advances Clinical Development Of ARGX-119
June 30 (Reuters) - argenx SE ARGX.BR: ADVANCES CLINICAL DEVELOPMENT OF ARGX-119 IN CONGENITAL MYASTHENIC SYNDROMES ADVANCE TO REGISTRATIONAL STUDY IN PATIENTS WITH CONGENITAL MYASTHENIC SYNDROMES (CMS) Source text: ID:nNDL990jfT Further company coverage: ARGX.BR (Gdansk Newsroom) ((gdansk.newsroom@thomsonreuters.com; +48 58 769 66 00;))