familial isolated congenital asplenia
MONDO:0010066
Familial isolated congenital asplenia is a rare, non-syndromic, potentially life-threatening visceral malformation characterized by the absence of normal spleen function, resulting in a primary immunodeficiency. Typically, the condition manifests with severe, recurrent, overwhelming infections (especially pneumococcal sepsis) in otherwise apparently healthy infants. In adults with no history of severe sepsis in infancy, thrombocytosis may be the presenting sign. Howell-Jolly bodies on blood smears and an absent spleen on abdominal ultrasound examination are highly suggestive associated findings.
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Isolated congenital asplenia
Isolated congenital asplenia is a rare disease in humans that can cause life-threatening bacterial infections in children due to primary immunodeficiency. The infections can include pneumococal sepsis and meningitis. ICAS is a ribosomopathy, due to autosomal dominant mutation of the RPSA gene on chromosome 3p21. Unlike heterotaxy syndrome, the absent spleen (asplenia) is not associated with other structural developmental defects. In some cases the spleen is present, but very small and nonfunctional (hyposplenism).
Background only. Canonical identity remains MONDO; clinical-trial relationships come from ClinicalTrials.gov.Drugs being studied
Disease identity and terminology: MONDO. Trial relationships: ClinicalTrials.gov.