Combined Immunodeficiency
Gene: ITPR3
Mode of inheritance
BIALLELIC, autosomal or pseudoautosomal
Phenotypes
Combined immunodeficiency, MONDO:0015131, ITPR3-related
Three different variants in two unrelated compound heterozygous patients demonstrated impaired IP3-mediated Ca2+ responses in vitro, translating into deficient T-cell activation and
proliferation. P1 was a 12-year-old male patient who presented with combined immunodeficiency with profoundly low numbers of B and T cells and required hematopoietic stem cell transplantation (HSCT) at the age of 6 years. P2 was a 36-year-old male
who presented with recurring immune thrombocytopenia (ITP), requiring splenectomy at the age of 19 years. He subsequently suffered from autoimmune hemolytic anemia, susceptibility to infections, and enteropathy. Hypogammaglobulinemia and low numbers of switched memory B cells led to a diagnosis of CVID and monthly treatment with intravenous
immunoglobulin. The patient did not show signs of neuromuscular disorder.
Authors suggest a partially recessive mode of inheritance with complete defects in these causing embryonic lethality.
Sources: LiteratureCreated: 26 Jul 2024, 3:23 a.m.
Mode of inheritance
BIALLELIC, autosomal or pseudoautosomal
Phenotypes
Combined Immune deficiency, immune dysregulation
Publications
Phenotypes for gene: ITPR3 were changed from Combined immunodeficiency, MONDO:0015131, ITPR3-related to Combined immunodeficiency, MONDO:0015131, ITPR3-related
Gene: itpr3 has been classified as Green List (High Evidence).
Phenotypes for gene: ITPR3 were changed from ombined immunodeficiency, MONDO:0015131, ITPR3-related to Combined immunodeficiency, MONDO:0015131, ITPR3-related
Phenotypes for gene: ITPR3 were changed from Combined Immune deficiency, immune dysregulation to ombined immunodeficiency, MONDO:0015131, ITPR3-related
Gene: itpr3 has been classified as Green List (High Evidence).
gene: ITPR3 was added gene: ITPR3 was added to Combined Immunodeficiency. Sources: Literature Mode of inheritance for gene: ITPR3 was set to BIALLELIC, autosomal or pseudoautosomal Publications for gene: ITPR3 were set to PMID: 36302985 Phenotypes for gene: ITPR3 were set to Combined Immune deficiency, immune dysregulation Review for gene: ITPR3 was set to GREEN