It is caused by homozygous mutation in the G6PC3 gene on chromosome 17.
Patients present with congenital neutropenia, cardiac abnormalities, inner ear deafness, neonatal sepsis and a prominent superficial venous pattern.[3]
Glycogen storage disease type 1b
Autosomal recessive(AR) transmission.
It is caused by homozygous or compound heterozygous mutation in the G6PT1 gene which encodes glucose-6-phosphate translocase, on chromosome 11.
Patients present with short stature, hepatomegaly, hypertension, eruptive xanthoma and hyperlipidemia.[4]
Cohen Syndrome
Autosomal recessive(AR) transmission.
It is caused by homozygous or compound heterozygous mutations in the COH1 gene on chromosome 8.
Patients present with nonprogressive psychomotor retardation, motor clumsiness, and microcephaly; typical facial features including high-arched eyelids, short philtrum, thick hair, and low hairline; childhood hypotonia and hyperextensibility of the joints: ophthalmologic findings of retinochoroidal dystrophy and myopia, and granulocytopenia.[5]