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Items: 6

1.

Abnormal B cell subset distribution

MedGen UID:
1371752
Concept ID:
C4476839
Finding
2.

Severe combined immunodeficiency due to LCK deficiency

Immunodeficiency-22 (IMD22) is an autosomal recessive disorder characterized by the onset of recurrent bacterial, viral, and fungal respiratory, gastrointestinal, and skin infections in infancy or early childhood. Immunologic workup shows severe T-cell lymphopenia, particularly affecting the CD4+ subset, and impaired proximal TCR intracellular signaling and activation. Although NK cells and B cells are normal, some patients may have hypogammaglobulinemia secondary to the T-cell defect. There are variable manifestations, likely due to the severity of the particular LCK mutation: patients may develop prominent skin lesions resembling epidermodysplasia verruciformis, gastrointestinal inflammation, and virus-induced malignancy. The disease can be fatal in childhood, but hematopoietic stem cell transplant (HSCT) may be curative (Hauck et al., 2012; Li et al., 2016; Keller et al., 2023). [from OMIM]

MedGen UID:
862670
Concept ID:
C4014233
Disease or Syndrome
3.

Luminal B breast carcinoma

A biologic subset of breast carcinoma defined by low to moderate expression of genes characteristic of luminal epithelial cells including estrogen receptor (ER), and high expression of GGH, LAPTM4B, and CCNE1. This subtype of breast cancer is associated with a good prognosis, although not as favorable as the luminal A subtype. [from NCI]

MedGen UID:
770986
Concept ID:
C3642346
Neoplastic Process
4.

Familial atypical multiple mole melanoma syndrome

Familial atypical multiple mole melanoma (FAMMM) syndrome is an inherited genodermatosis characterized by the presence of multiple melanocytic nevi (often >50) and a family history of melanoma as well as, in a subset of patients, an increased risk of developing pancreatic cancer (see this term) and other malignancies. [from ORDO]

MedGen UID:
389220
Concept ID:
C2314896
Neoplastic Process
5.

Immunodeficiency, common variable, 15

Common variable immunodeficiency-15 (CVID15) is an autosomal dominant immunologic disorder characterized by the onset of severe recurrent infections in infancy or early childhood. Laboratory studies show hypogammaglobulinemia with antibody deficiencies of IgM, IgG, and IgA due to impaired plasma cell homeostasis, although other B cell subset numbers are normal. T and NK cells are also normal. Treatment with IV Ig results in a favorable clinical response to recurrent infections (Schubert et al., 2018). For a general description and a discussion of genetic heterogeneity of common variable immunodeficiency, see CVID1 (607594). [from OMIM]

MedGen UID:
1847802
Concept ID:
C5882741
Disease or Syndrome
6.

Ph-positive acute lymphoblastic leukemia

A subset of acute lymphoblastic leukemia that results from a reciprocal translocation between the ABL-1 oncogene and a breakpoint cluster region (BCR), resulting in a fusion gene, BCR-ABL, that encodes an oncogenic protein with constitutively active tyrosine kinase activity. [from HPO]

MedGen UID:
313581
Concept ID:
C1709527
Neoplastic Process
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