IGHG3 and malaria: Polymorphisms in these antibodies may result in different functional properties that could provide protection from malaria.<h4>Methods</h4>Immunoglobulin G1 (IgG1) and IgG3 alleles and IgG3 hinge region were investigated by polymerase chain reaction (PCR) and Sanger sequencing in a longitudinal cohort of children aged 1-3 years (N=203) from East Sepik region of Papua New Guinea (PNG).