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Table 1 Hematological and immunological evaluation, phenotype and mutations in G6PC3 patients

From: Severe congenital neutropenia due to G6PC3 deficiency: early and delayed phenotype in two patients with two novel mutations

  

Patient

  

1

2

 

Eth

Italian

Turkish (consanguinous)

 

Sex

F

M

 

Current age (years)

20

3

 

Infections prior to G-CSF therapy

Skin, pulmonary and brain abscess byS. Aureus

Otitis, parotitis,S. Viridanssepsis,S. Aureusgluteal abscess, recurrent aphtous stomatitis

Blood cells count

White blood cells ^ (4.5-17)

6,6

2,7

Neutrophils ^ (1.5-6.0 × 109/L)

0,22

0,06

Lymphocytes ^ (1.3-8.5 × 109/L)

2,9

1,9

Monocytes ^ (0.1-1.0 × 109/L

3,4

0,7

Platelet count ^ (150-450 cells/uL)

610

347

 

Intermittent thrombocytopenia

Yes (range 46-158 cells/uL)

No

Serum Immunoglobulin concentrations

IgG (mg/dL)

1.240 (231-947)

974 (462-1710)

IgA (mg/dl)

54 (8-74)

64 (27-173)

IgM (mg/dl)

79 (26-210)

118 (62-257)

IgE (kU/L) (n.v. < 95)

3

7

Lymphocyte subset (cells/uL)

CD3+ (770-1880)

720

1287

CD3 + CD4+ ( 470-1240)

373

805

CD3 + CD8+ (215-730)

318

426

CD19+ (100-390)

218

460

CD16+ (70-550)

69

79

CD11b (PMN)

98%

N.D.

CD18+ (PMN)

100%

N.D

 

Extra haematological features

Facial dysmorphisms,

Facial dysmorphisms,

 

mitral valve prolapse,

prominent veins,

 

prominent veins,

sensorineural hearing loss,

 

ligamentous laxity,

micropenis, coronal ipospadia.

 

inguinal hernia,

 
 

delayed puberty,

 
 

hypergonadotrophic hypogonadism

 
 

G6PC3

c.144C>A/c.373_375delAAT

c.680_684delinsT/ c.680_684delinsT

 

Mutation

p.Y48*/ p.I125del

p.S227Lfs*3/ p.S227Lfs*3

  1. ^ prior to G-CSF therapy.
  2. NA: not available.
  3. Immunoglobulins normal value for age are reported in brackets.