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Immunodeficiency 91 and hyperinflammation(IMD91)

MedGen UID:
1794283
Concept ID:
C5562073
Disease or Syndrome
Synonyms: IMD91; IMMUNODEFICIENCY 91 AND HYPERINFLAMMATION
 
Gene (location): ZNFX1 (20q13.13)
 
Monarch Initiative: MONDO:0030491
OMIM®: 619644

Definition

Immunodeficiency-91 and hyperinflammation (IMD91) is an autosomal recessive complex immunologic disorder characterized by both immunodeficiency and recurrent infections, often to viruses or mycobacteria, as well as by hyperinflammation with systemic involvement. Affected individuals present in infancy with variable features, including fever, infection, thrombocytopenia, renal or hepatic dysfunction, recurrent infections, or seizures. Most patients eventually develop hepatic or renal failure, compromised neurologic function, lymphadenopathy or hepatosplenomegaly, and multiorgan failure resulting in death. More variable features may include intermittent monocytosis, features of hemophagocytic lymphohistiocytosis (HLH), and serologic evidence of hyperinflammation. The disorder is thought to result from dysregulation of the interferon response to viral stimulation in the innate immune system (summary by Le Voyer et al., 2021; Vavassori et al., 2021). [from OMIM]

Clinical features

From HPO
Hemolytic-uremic syndrome
MedGen UID:
42403
Concept ID:
C0019061
Disease or Syndrome
A thrombotic microangiopathy with presence of non-immune, intravascular hemolytic anemia, thrombocytopenia and acute kidney injury. A vicious cycle of complement activation, endothelial cell damage, platelet activation, and thrombosis is the hallmark of the disease.
Nephrotic syndrome
MedGen UID:
10308
Concept ID:
C0027726
Disease or Syndrome
Nephrotic syndrome is a collection of findings resulting from glomerular dysfunction with an increase in glomerular capillary wall permeability associated with pronounced proteinuria. Nephrotic syndrome refers to the constellation of clinical findings that result from severe renal loss of protein, with Proteinuria and hypoalbuminemia, edema, and hyperlipidemia.
Renal insufficiency
MedGen UID:
332529
Concept ID:
C1565489
Disease or Syndrome
A reduction in the level of performance of the kidneys in areas of function comprising the concentration of urine, removal of wastes, the maintenance of electrolyte balance, homeostasis of blood pressure, and calcium metabolism.
Pulmonary hemorrhage
MedGen UID:
57732
Concept ID:
C0151701
Pathologic Function
Pulmonary hemorrhage is a bleeding within the lungs. Older children and adults may spit blood or bloody sputum. Neonates, infants and young children usually do not spit up blood. Anemia, pulmonary infiltrates, increasingling bloody return on BAL and the presence of hemosiderin-laden macrophages in broncho-alveolar lavage (BAL) fluid or lung biopsy can diagnose lung bleeding. Alveolar macrophages contain phagocytosed red blood cells and stain positive for hemosiderin, a product of hemoglobin degradation, after about 48-72 hours following pulmonary hemorraghe. Previous or recurrent bleeding can thus be distinguished from fresh events. A differentiation into local or diffuse is of importance. Also differentiate if pulmonary hemorrhage is due to a primary lung disorder or a manifestation of a systemic disease.
Failure to thrive
MedGen UID:
746019
Concept ID:
C2315100
Disease or Syndrome
Failure to thrive (FTT) refers to a child whose physical growth is substantially below the norm.
Hepatomegaly
MedGen UID:
42428
Concept ID:
C0019209
Finding
Abnormally increased size of the liver.
Hepatosplenomegaly
MedGen UID:
9225
Concept ID:
C0019214
Sign or Symptom
Simultaneous enlargement of the liver and spleen.
Acute liver failure
MedGen UID:
58125
Concept ID:
C0162557
Disease or Syndrome
Hepatic failure refers to the inability of the liver to perform its normal synthetic and metabolic functions, which can result in coagulopathy and alteration in the mental status of a previously healthy individual. Hepatic failure is defined as acute if there is onset of encephalopathy within 8 weeks of the onset of symptoms in a patient with a previously healthy liver.
Intermittent diarrhea
MedGen UID:
66782
Concept ID:
C0239181
Sign or Symptom
Repeated episodes of diarrhea separated by periods without diarrhea.
Encephalomalacia
MedGen UID:
4936
Concept ID:
C0014068
Disease or Syndrome
Encephalomalacia is the softening or loss of brain tissue after cerebral infarction, cerebral ischemia, infection, craniocerebral trauma, or other injury.
Hepatic encephalopathy
MedGen UID:
5513
Concept ID:
C0019151
Disease or Syndrome
Central nervous system dysfunction in association with liver failure and characterized clinically (depending on degree of severity) by lethargy, confusion, nystagmus, decorticate posturing, spasticity, and bilateral Babinski reflexes.
Seizure
MedGen UID:
20693
Concept ID:
C0036572
Sign or Symptom
A seizure is an intermittent abnormality of nervous system physiology characterized by a transient occurrence of signs and/or symptoms due to abnormal excessive or synchronous neuronal activity in the brain.
Arachnoid cyst
MedGen UID:
86860
Concept ID:
C0078981
Disease or Syndrome
An extra-parenchymal and intra-arachnoidal collection of fluid with a composition similar to that of cerebrospinal fluid.
Focal impaired awareness seizure
MedGen UID:
543022
Concept ID:
C0270834
Disease or Syndrome
Focal impaired awareness seizure (or focal seizure with impaired or lost awareness) is a type of focal-onset seizure characterized by some degree (which may be partial) of impairment of the person's awareness of themselves or their surroundings at any point during the seizure.
Global developmental delay
MedGen UID:
107838
Concept ID:
C0557874
Finding
A delay in the achievement of motor or mental milestones in the domains of development of a child, including motor skills, speech and language, cognitive skills, and social and emotional skills. This term should only be used to describe children younger than five years of age.
Autistic behavior
MedGen UID:
163547
Concept ID:
C0856975
Mental or Behavioral Dysfunction
Persistent deficits in social interaction and communication and interaction as well as a markedly restricted repertoire of activity and interest as well as repetitive patterns of behavior.
Thrombocytopenia
MedGen UID:
52737
Concept ID:
C0040034
Disease or Syndrome
A reduction in the number of circulating thrombocytes.
Megakaryocytopenia
MedGen UID:
346881
Concept ID:
C1858312
Finding
A reduced count of megakaryocytes.
Cerebral calcification
MedGen UID:
124360
Concept ID:
C0270685
Finding
The presence of calcium deposition within the cerebrum.
Pleural effusion
MedGen UID:
10805
Concept ID:
C0032227
Pathologic Function
The presence of an excessive amount of fluid in the pleural cavity.
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.
Recurrent lower respiratory tract infections
MedGen UID:
756211
Concept ID:
C3163798
Disease or Syndrome
An increased susceptibility to lower respiratory tract infections as manifested by a history of recurrent lower respiratory tract infections.
Abnormal pulmonary interstitial morphology
MedGen UID:
1788738
Concept ID:
C5441745
Anatomical Abnormality
Abnormality of the lung parenchyma extending to the pulmonary interstitium and leading to diffuse pulmonary fibrosis.
Mesangiocapillary glomerulonephritis
MedGen UID:
9033
Concept ID:
C0017662
Disease or Syndrome
A type of glomerulonephritis characterized by diffuse mesangial cell proliferation and the thickening of capillary walls due to subendothelial extension of the mesangium. The term membranoproliferative glomerulonephritis is often employed to denote a general pattern of glomerular injury seen in a variety of disease processes that share a common pathogenetic mechanism, rather than to describe a single disease entity
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.
Maculopapular exanthema
MedGen UID:
98072
Concept ID:
C0423791
Finding
A skin rash that is characterized by diffuse cutaneous erythema with areas of skin elevation. It may evolve to vesicles or papules as part of a more severe clinical entity. Different degrees of angioedema with involvement of subcutaneous tissue may also appear.
Lymphadenopathy
MedGen UID:
96929
Concept ID:
C0497156
Disease or Syndrome
Enlargement (swelling) of a lymph node.
Extrapulmonary tuberculosis
MedGen UID:
671310
Concept ID:
C0679362
Disease or Syndrome
A type of tubercular infection located outside of the lung, which is the most common location of tuberculosis. There are two types of clinical manifestation of tuberculosis (TB) are pulmonary TB (PTB) and extrapulmonary TB (EPTB). The former is most common. EPTB refers to TB involving organs other than the lungs (e.g., pleura, lymph nodes, abdomen, genitourinary tract, skin, joints and bones, or meninges). A patient with both pulmonary and EPTB is classified as a case of PTB.
Hemophagocytosis
MedGen UID:
163750
Concept ID:
C0876991
Disease or Syndrome
Phagocytosis by macrophages of erythrocytes, leukocytes, platelets, and their precursors in bone marrow and other tissues.
Severe viral infection
MedGen UID:
479058
Concept ID:
C3277428
Finding
An unusually severe viral infection.
BCGosis
MedGen UID:
823215
Concept ID:
C3830467
Disease or Syndrome
Distant, or disseminated infection with Bacillus Calmette-Guerin (BCG) following vaccination associated with failure to contain thebacillus Calmette-Guerin (BCG) following vaccination leading to spread of BCG to many sites in the body. The tuberculosis vaccine BCG contains live attenuated Mycobacterium bovis.
Edema
MedGen UID:
4451
Concept ID:
C0013604
Pathologic Function
An abnormal accumulation of fluid beneath the skin, or in one or more cavities of the body.
Elevated erythrocyte sedimentation rate
MedGen UID:
57727
Concept ID:
C0151632
Finding
An increased erythrocyte sedimentation rate (ESR). The ESR is a test that measures the distance that erythrocytes have fallen after one hour in a vertical column of anticoagulated blood under the influence of gravity. The ESR is a nonspecific finding. An elevation may indicate inflammation or may be caused by any condition that elevates fibrinogen.
Elevated circulating hepatic transaminase concentration
MedGen UID:
116013
Concept ID:
C0235996
Finding
Elevations of the levels of SGOT and SGPT in the serum. SGOT (serum glutamic oxaloacetic transaminase) and SGPT (serum glutamic pyruvic transaminase) are transaminases primarily found in the liver and heart and are released into the bloodstream as the result of liver or heart damage. SGOT and SGPT are used clinically mainly as markers of liver damage.
Persistent fever
MedGen UID:
1720688
Concept ID:
C0476474
Pathologic Function
Fever that persists longer than expected for an acute infectious disease. No precise threshold exists, and the clinical interpretation of fever is context-dependent, but as a rule of thumb, this term refers to fever that persists longer than 2-3 weeks.
Recurrent fever
MedGen UID:
811468
Concept ID:
C3714772
Sign or Symptom
Periodic (episodic or recurrent) bouts of fever.
Elevated circulating C-reactive protein concentration
MedGen UID:
892906
Concept ID:
C4023452
Finding
An abnormal elevation of the C-reactive protein level in the blood circulation.
Increased circulating lactate dehydrogenase concentration
MedGen UID:
1377250
Concept ID:
C4477095
Finding
An elevated level of the enzyme lactate dehydrogenase in the blood circulation.

Recent clinical studies

Etiology

Migaud P, Müller M, Arastéh K, Hentrich M, Stocker H
Ann Hematol 2022 Oct;101(10):2281-2287. Epub 2022 Aug 19 doi: 10.1007/s00277-022-04944-2. PMID: 35982337

Diagnosis

Migaud P, Müller M, Arastéh K, Hentrich M, Stocker H
Ann Hematol 2022 Oct;101(10):2281-2287. Epub 2022 Aug 19 doi: 10.1007/s00277-022-04944-2. PMID: 35982337

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