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Immunodeficiency 14b, autosomal recessive(IMD14B)

MedGen UID:
1787468
Concept ID:
C5543301
Disease or Syndrome
Synonyms: IMD14B; IMMUNODEFICIENCY 14B, AUTOSOMAL RECESSIVE
 
Gene (location): PIK3CD (1p36.22)
 
Monarch Initiative: MONDO:0023655
OMIM®: 619281

Definition

Autosomal recessive primary immunodeficiency-14B (IMD14B) is characterized by onset of recurrent infections in early childhood. Most patients have respiratory infections, but some may develop inflammatory bowel disease or osteomyelitis. Laboratory studies tend to show hypogammaglobulinemia and decreased levels of B cells. Although NK cell and T cell numbers are normal, there may be evidence of impaired immune-mediated cytotoxicity and defective T-cell function (summary by et al., 2018 and et al., 2019). [from OMIM]

Clinical features

From HPO
Colitis
MedGen UID:
40385
Concept ID:
C0009319
Disease or Syndrome
Ulcerative colitis is a chronic disorder that affects the digestive system. This condition is characterized by abnormal inflammation of the inner surface (epithelium) of the rectum and colon. The rectum and colon make up most of the length of the large intestine. The inflammation usually causes open sores (ulcers) to develop in the large intestine. Ulcerative colitis usually appears between the age of 15 and 30, although it can develop at any age. The inflammation tends to flare up multiple times throughout a person's life, which causes recurring signs and symptoms.\n\nThe most common symptoms of ulcerative colitis are cramping abdominal pain and frequent diarrhea, often with blood, pus, or mucus in the stool. Other signs and symptoms include nausea, loss of appetite, bowel urgency, fatigue, and fevers. Chronic bleeding from the inflamed and ulcerated intestinal tissue can cause a shortage of red blood cells (anemia) in some affected individuals. People with this disorder have difficulty absorbing enough fluids and nutrients from their diet and often experience weight loss. Affected children usually grow more slowly than normal. Less commonly, ulcerative colitis causes problems with the skin, joints, eyes, kidneys, or liver, which are most likely due to abnormal inflammation.\n\nToxic megacolon is a rare complication of ulcerative colitis that can be life-threatening. Toxic megacolon involves a widening (dilation) of the colon and an overwhelming inflammatory response. Ulcerative colitis also increases the risk of developing colon cancer, especially in people whose entire colon is inflamed and in those who have had ulcerative colitis for 8 years or more.\n\nUlcerative colitis is one common form of inflammatory bowel disease (IBD). Another type of IBD, Crohn's disease, also causes chronic inflammation of the intestines. Unlike ulcerative colitis, which affects only the inner surface of the large intestine, Crohn's disease can cause inflammation in any part of the digestive system, and the inflammation extends deeper into the intestinal tissue.
Chronic diarrhea
MedGen UID:
96036
Concept ID:
C0401151
Finding
The presence of chronic diarrhea, which is usually taken to mean diarrhea that has persisted for over 4 weeks.
Inflammation of the large intestine
MedGen UID:
662273
Concept ID:
C0578878
Disease or Syndrome
Inflammation, or an inflammatory state in the large intestine.
Thrombocytosis
MedGen UID:
163397
Concept ID:
C0836924
Disease or Syndrome
Increased numbers of platelets in the peripheral blood.
Polyarticular arthritis
MedGen UID:
56408
Concept ID:
C0162323
Disease or Syndrome
Pain and inflammation in more than five joints.
Recurrent sinusitis
MedGen UID:
107919
Concept ID:
C0581354
Disease or Syndrome
A recurrent form of sinusitis.
Recurrent pneumonia
MedGen UID:
195802
Concept ID:
C0694550
Disease or Syndrome
An increased susceptibility to pneumonia as manifested by a history of recurrent episodes of pneumonia.
Leukocytosis
MedGen UID:
9736
Concept ID:
C0023518
Disease or Syndrome
An abnormal increase in the number of leukocytes in the blood.
Monocytosis
MedGen UID:
39091
Concept ID:
C0085702
Disease or Syndrome
An increased number of circulating monocytes.
Neutrophilia
MedGen UID:
57729
Concept ID:
C0151683
Finding
Increased number of neutrophils circulating in blood.
Decreased circulating IgA concentration
MedGen UID:
57934
Concept ID:
C0162538
Disease or Syndrome
Decreased levels of immunoglobulin A (IgA).
Esophageal candidiasis
MedGen UID:
66784
Concept ID:
C0239295
Disease or Syndrome
Candida infections of the esophagus are considered opportunistic infections and are seen most commonly in immunosuppressed patients, the most common symptoms being dysphagia, odynophagia, and retrosternal pain.
Decreased circulating total IgM
MedGen UID:
116095
Concept ID:
C0239989
Finding
An abnormally decreased level of immunoglobulin M (IgM) in blood.
Reduced natural killer cell activity
MedGen UID:
333452
Concept ID:
C1839969
Finding
Reduced ability of the natural killer cell to function in the adaptive immune response.
B lymphocytopenia
MedGen UID:
340780
Concept ID:
C1855067
Finding
An abnormal decrease from the normal count of B cells.
Decreased circulating IgG concentration
MedGen UID:
1720114
Concept ID:
C5234937
Finding
An abnormally decreased level of immunoglobulin G (IgG) in blood.

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