Table 1.
Features of patients sharing the de novo missense CDC42 c.556C>T (p.R186C) mutation
Pt 1Pt 2Pt 3Pt 4
Outcome and status Alive, 6 yr Dead, 6 mo Dead, 1.5 yr Dead, 4.5 mo 
Fever 
Skin rash 
Facial dysmorphism − − − − 
Failure to thrive 
Hepatomegaly 
Splenomegaly − 
CNS inflammatory diseasea − − − 
Gastrointestinal symptomsb 
Cardiac abnormalities − − − − 
HLHc 
Anemiad 
Thrombocytopeniad 
Neutropeniae 
Monocytopenia N/A N/A 
Acute-phase response 
BM dysplasia 
Other notable features +f − − +g 
Pt 1Pt 2Pt 3Pt 4
Outcome and status Alive, 6 yr Dead, 6 mo Dead, 1.5 yr Dead, 4.5 mo 
Fever 
Skin rash 
Facial dysmorphism − − − − 
Failure to thrive 
Hepatomegaly 
Splenomegaly − 
CNS inflammatory diseasea − − − 
Gastrointestinal symptomsb 
Cardiac abnormalities − − − − 
HLHc 
Anemiad 
Thrombocytopeniad 
Neutropeniae 
Monocytopenia N/A N/A 
Acute-phase response 
BM dysplasia 
Other notable features +f − − +g 

CNS, central nervous system; N/A, not applicable.

a

Pt 1, three episodes at age 2 yr with generalized seizures and white and gray matter lesions in MRI; Pt 3, increased CSF protein and MRI with leptomeningitis.

b

Pt 1, diarrhea, intestinal bleeding at age 11 mo, and intestinal infarction at age 5 yr; Pt 2, chronic diarrhea; Pt 3, small intestine inflammation; Pt 4, severe, unremitting enterocolitis from birth and diarrhea with intestinal bleedings and infarctions.

c

Pt 1, four episodes; Pt 2, a single episode leading to death; Pt 3, died of secondary HLH after transplant; Pt 4, four episodes.

d

Pt 1, constant transfusion requirement until age 2 yr; Pt 2, intermittent transfusion requirement during flares; Pt 3, transfusion dependent; Pt 4, transfusion dependent.

e

Pt 1, Pt 2, and Pt 3, profound neutropenia; Pt 4, mild neutropenia.

f

Suspected trigonocephaly.

g

Very small thymus; arthritis.

or Create an Account

Close Modal
Close Modal