HPO
Db Link Name Definition Comment Is a
HPO HP:0002955 Granulomatosis "A granulomatous inflammation leading to multiple granuloma formation, which is a specific type of inflammation. A granuloma is a focal compact collection of inflammatory cells, mononuclear cells predominating, usually as a result of the persistence of a non-degradable product and of active cell mediated hypersensitivity." [HPO:probinson, PMID:10908370, PMID:937513] This finding can be demonstrated by tissue biopsy. A granuloma is a compact (organized) collection of mature mononuclear phagocytes (macrophages and/or epithelioid cells) which may or may not be accompanied by accessory features such as necrosis or the infiltration of other inflammatory leukocytes (Adams DO. The granulomatous inflammatory response. Am J Pathol 1976:84:163-192). HP:0004311
HPO HP:0002958 Immune dysregulation "Altered immune function characterized by lymphoid proliferation, immune activation, and excessive autoreactivity often leading to autoimmune/inflammatory complications." [PMID:26233425] HP:0010978
HPO HP:0002959 Impaired Ig class switch recombination "An impairment of the class-switch recombination process that normally leads B lymphocytes to produce IgG, IgA, or IgE." [HPO:probinson, PMID:11544001] The generation of the antibody repertoire requires two successive steps. The first is antigen- and T-cell-independent; it takes place in the fetal liver and the bone marrow. Immature B lymphocytes rearrange their immunoglobulin-gene variable segments (V segments), diversity segments (D segments) and joining segments (J segments), producing a functionally integrated VDJ segment linked to the mu constant region (C-mu), which determines the primary antibody repertoire composed of IgM antibodies. The second step is antigen- and T-cell-dependent and takes place in secondary lymphoid organs. After encountering antigen, B cells proliferate and form germinal centers. In this unique anatomic formation, two genetic events lead to generation of the secondary antibody repertoire: class-switch recombination (CSR) and somatic hypermutation (SHM). CSR of immunoglobulins occurs by a recombination process between two different switch regions (S regions) located upstream of each C region. Replacement of C-mu by a constant region of another class of immunoglobulin (C-gamma, C-alpha or C-epsilon) ensues and leads to the production of IgG, IgA or IgE. HP:0005372
HPO HP:0002960 Autoimmunity "The occurrence of an immune reaction against the organism's own cells or tissues." [HPO:probinson] HP:0010978
HPO HP:0002961 Dysgammaglobulinemia "Selective deficiency of one or more, but not all, classes of immunoglobulins." [HPO:probinson] HP:0004313
HPO HP:0002963 Abnormal delayed hypersensitivity skin test "Delay in cutaneous immune reaction to specific antigens mediated not by antibodies but by cells. The delayed hypersensitivity test is an immune function test measuring the presence of activated T cells that recognize a specific antigen and is performed by injecting a small amount of the antigen into the skin. The area of the injection is examined 48-72 hours thereafter." [HPO:probinson] This is an immune function test measuring the presence of activated T cells that recognize a certain substance. HP:0011840
HPO HP:0002965 Cutaneous anergy "Inability to react to a delayed hypersensitivity skin test." [HPO:probinson] Anergy skin testing assesses the responses to skin-test antigens to which a cell-mediated, delayed-type hypersensitivity (DTH) response is expected. HP:0002963
HPO HP:0002967 Cubitus valgus "Abnormal positioning in which the elbows are turned out." [HPO:probinson] HP:0009811
HPO HP:0002970 Genu varum "A positional abnormality marked by outward bowing of the legs in which the knees stay wide apart when a person stands with the feet and ankles together." [HPO:probinson] HP:0002815, HP:0002979
HPO HP:0002971 Absent microvilli on the surface of peripheral blood lymphocytes "Absence of the fingerlike protrusive, actin-dependent structures found on the surface of peripheral blood lymphocytes." [PMID:15130947] HP:0004332
HPO HP:0002972 Reduced delayed hypersensitivity "Decreased ability to react to a delayed hypersensitivity skin test." [HPO:probinson] HP:0002963
HPO HP:0002973 Abnormality of the forearm "An abnormality of the lower arm." [HPO:probinson] HP:0002817
HPO HP:0002974 Radioulnar synostosis "An abnormal osseous union (fusion) between the radius and the ulna." [HPO:probinson] HP:0002818, HP:0002997, HP:0100238
HPO HP:0002977 Aplasia/Hypoplasia involving the central nervous system "Absence or underdevelopment of tissue in the central nervous system." [HPO:probinson] HP:0002011
HPO HP:0002979 Bowing of the legs "A bending or abnormal curvature affecting a long bone of the leg." [HPO:probinson] HP:0002981, HP:0006487
HPO HP:0002980 Femoral bowing "Bowing (abnormal curvature) of the femur." [HPO:probinson] HP:0002823, HP:0002979
HPO HP:0002981 Abnormality of the calf "An abnormality of the calf, i.e. of the posterior part of the lower leg." [HPO:probinson] HP:0002814
HPO HP:0002982 Tibial bowing "A bending or abnormal curvature of the tibia." [HPO:probinson] A developmental defect with posteromedial tibial angulation. HP:0002979, HP:0002992
HPO HP:0002983 Micromelia "The presence of abnormally small extremities." [HPO:probinson] HP:0009826
HPO HP:0002984 Hypoplasia of the radius "Underdevelopment of the radius." [HPO:probinson] HP:0006501, HP:0009821, HP:0045009
HPO HP:0002986 Radial bowing "A bending or abnormal curvature of the radius." [HPO:probinson] HP:0003956, HP:0045008
HPO HP:0002987 Elbow flexion contracture "A chronic loss of elbow joint motion due to structural changes in muscle, tendons, ligaments, or skin that prevent normal movement of the joints of the elbow." [HPO:probinson] HP:0002996, HP:0100360
HPO HP:0002990 Fibular aplasia "Absence of the fibula." [HPO:probinson] HP:0006492
HPO HP:0002991 Abnormality of fibula morphology "An anomaly of the calf bone (fibula), one of the two bones of the calf." [HPO:probinson] HP:0002981, HP:0040069
HPO HP:0002992 Abnormality of tibia morphology "Abnormality of the tibia (shinbone)." [HPO:curators] HP:0002981, HP:0040069