Case report

DOI: 10.1016/j.reumae.2025.501843

Rare C1q deficiency presenting as pediatric SLE: A case study of two consanguineous siblings

Deficiencia rara de C1q que se presenta como LES pediátrico: estudio de caso de dos hermanos consanguíneos

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Kerem Parlara, Berkay Aktaşa, Sena Ladin Sicakyüzb, Sezgin Şahinc, Özgür Kasapçopurc, Serdal Uğurlud,

a Cerrahpasa Medical Faculty, Istanbul University-Cerrahpasa, Istanbul, Turkey

b Acibadem University School of Medicine, Istanbul, Turkey

c Division of Pediatric Rheumatology, Department of Pediatrics, Cerrahpasa Medical Faculty, Istanbul University-Cerrahpasa, Istanbul, Turkey

d Division of Rheumatology, Department of Internal Medicine, Cerrahpasa Medical Faculty, Istanbul University-Cerrahpasa, Istanbul, Turkey