title: Genetic markers in patients with intracranial aneurysms.
abstract: HLA antigens, blood group systems (ABO, Rh, MNSs, P, Kell, Lewis and Duffy) and serum group systems (Hp, Tf, Gc, Pi, Bf, C3 and C4) were studied in a series of patients with intracranial aneurysms. A significantly increased frequency of HLA antigen A28, a significantly decreased frequency of HLA antigen B40, and a significantly decreased frequency of complement factor C4 B2 was found among the patients when compared with controls from the same geographic area.
mesh_terms: D003181:Complement C4 / Q000235:genetics; D015935:Complement C4b; D005819:Genetic Markers; D006680:HLA Antigens / Q000235:genetics; D015234:HLA-A Antigens; D015235:HLA-B Antigens; D059947:HLA-B40 Antigen; D006801:Humans; D002532:Intracranial Aneurysm / Q000235:genetics* / Q000276:immunology
chemical_list: D003181:Complement C4; D005819:Genetic Markers; D006680:HLA Antigens; D015234:HLA-A Antigens; C037164:HLA-A28 antigen; D015235:HLA-B Antigens; D059947:HLA-B40 Antigen; D015935:Complement C4b