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Table 2 Mortality

From: Prospective study of the natural history of chronic acid sphingomyelinase deficiency in children and adults: eleven years of observation

Cause of death

Genotype variant* (classification)

Severity of splenomegaly at baseline

Age at ASMD onset (years)

Age group at baseline

Age at death (years)

Splenic vein tear

p.C433R/p.A198P (missense/missense)

Severe

1

Pediatric

14

Heart failure, liver failure

p.R610del/p.G247S (deletion/missense)

Severe

1

Pediatric

16

Diarrhea, fever/portal hypertension with esophageal varices

p.L105P/p.T544fs*69 (missense/frame shift)

NA

0

Pediatric

17

Pneumonia

p.Q294K/p.Q294K (missense/missense)

Severe

2

Pediatric

20

Pneumonia

p.L434P/p.L434P (missense/missense)

sx

1

Adult

35

Multiple organ failure/infectious disease

p.F482L/p.F482L (missense/missense)

sx

30

Adult

56

Liver cancer

p.A198P/p.A198P (missense/missense)

Severe

9

Adult

65

Pneumonia

p.L37Wfs*42/p.P186L (missense/frameshift)

sx

8

Adult

71

Death from a gun shot

p.R610del/p.R476W (deletion/missense)

Moderate

1

Pediatric

22

  1. NA, not available; sx, splenectomy
  2. *Reference sequence NM 00543.4 nomenclature
  3. Splenomegaly: moderate ≥ 5 to < 15, severe ≥ 15 MN