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Items: 6

1.

Combined immunodeficiency due to CD3gamma deficiency

Immunodeficiency-17 (IMD17) is an autosomal recessive primary immunodeficiency characterized by highly variable clinical severity. Some patients have onset of severe recurrent infections in early infancy that may be lethal, whereas others may be only mildly affected or essentially asymptomatic into young adulthood. More severely affected patients may have evidence of autoimmune disease or enteropathy. The immunologic pattern is similar among patients, showing partial T-cell lymphopenia, particularly of cytotoxic CD8 (see 186910)-positive cells, decreased amounts of the CD3 complex, and impaired proliferative responses to T-cell receptor (TCR)-dependent stimuli. B cells, natural killer (NK) cells, and immunoglobulins are usually normal. Although thymic output of functional naive T cells early in life is decreased, polyclonal expansion of functional memory T cells is substantial. The phenotype in some patients is reminiscent of severe combined immunodeficiency (SCID) (summary by Timon et al. (1993) and Recio et al. (2007)). [from OMIM]

MedGen UID:
816437
Concept ID:
C3810107
Disease or Syndrome
2.

Immunodeficiency 19

Immunodeficiency-19 (IMD19) is an autosomal recessive form of severe combined immunodeficiency (SCID) characterized by onset in early infancy of recurrent bacterial, viral, and fungal infections. Patients usually have chronic diarrhea, recurrent respiratory infections, and failure to thrive. Immunologic work-up shows a T cell-negative, B cell-positive, natural killer (NK) cell-positive phenotype. The disorder is lethal in early childhood without bone marrow transplantation (summary by Yu et al., 2011). [from OMIM]

MedGen UID:
816477
Concept ID:
C3810147
Disease or Syndrome
3.

Immunodeficiency-centromeric instability-facial anomalies syndrome 3

Immunodeficiency-centromeric instability-facial anomalies syndrome-3 is an autosomal recessive disorder characterized by recurrent infections in childhood and variable dysmorphic facial features. Laboratory studies show hypomethylation of certain chromosomal regions. Additional features, including delayed development, are variable (summary by Thijssen et al., 2015). For a discussion of genetic heterogeneity of immunodeficiency-centromeric instability-facial anomalies syndrome, see ICF1 (242860). [from OMIM]

MedGen UID:
934766
Concept ID:
C4310799
Disease or Syndrome
4.

Immunodeficiency-centromeric instability-facial anomalies syndrome 4

Immunodeficiency-centromeric instability-facial anomalies syndrome-4 is an autosomal recessive disorder characterized by recurrent infections in childhood and variable dysmorphic facial features. Laboratory studies show hypomethylation of certain chromosomal regions. Additional features, including delayed development, are variable (summary by Thijssen et al., 2015). For a discussion of genetic heterogeneity of immunodeficiency-centromeric instability-facial anomalies syndrome, see ICF1 (242860). [from OMIM]

MedGen UID:
934765
Concept ID:
C4310798
Disease or Syndrome
5.

Vertebral anomalies and variable endocrine and T-cell dysfunction

Vertebral anomalies and variable endocrine and T-cell dysfunction is a syndrome characterized by an overlapping spectrum of features. Skeletal malformations primarily involve the vertebrae, and endocrine abnormalities involving parathyroid hormone (PTH; 168450), growth hormone (GH1; 139250), and the thyroid gland have been reported. T-cell abnormalities have been observed, with some patients showing thymus gland aplasia or hypoplasia. Patients have mild craniofacial dysmorphism, and some show developmental delay or behavioral problems. Cardiac defects may be present (Liu et al., 2018). [from OMIM]

MedGen UID:
1648299
Concept ID:
C4748741
Disease or Syndrome
6.

Abnormal B cell morphology

A structural abnormality of B cells. [from HPO]

MedGen UID:
867383
Concept ID:
C4021748
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