AgammaglobulinemiaGenetic Diseases, X-LinkedX ChromosomeProtein-Tyrosine KinasesB-LymphocytesGenetic LinkageImmunologic Deficiency SyndromesImmunoglobulin delta-ChainsIgG DeficiencyEcthymaCampylobacter lariReceptors, Antigen, B-CellHelicobacterImmunoglobulins, IntravenousChromosomes, Human, XDosage Compensation, GeneticCommon Variable ImmunodeficiencyPedigreeMutationImmunoglobulin MImmunoglobulinsLymphocyte Count