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Submitted on August 16, 2004
Accepted on March 4, 2005
Centro de Investigaciones Endocrinológicas (CEDIE), Hospital de Niños "Ricardo Gutiérrez", Buenos Aires, Argentina; Servicio de Genética, Hospital La Paz, Madrid, España; Human Genetics. INSERM U361. E0021. Hôpital Cochin, Paris, France; Laboratorio de Biología Molecular, Departamento de Ciencias Biológicas. Universidad CAECE, Buenos Aires, Argentina
* To whom correspondence should be addressed. E-mail: ibergada{at}cedie.org.ar.
The IMAGe association(OMIM 300290) is a recently reported disorder comprising intrauterine growth retardation (IUGR), metaphyseal dysplasia, adrenal hypoplasia and genital anomalies. Four children (3 males,1 female) from a large pedigree (five generations) were studied. Additional members(n = 10), that died during the neonatal period, were born with IUGR and/or hyperpigmentation, and are presumed to have been affected too. All patients in this series were diagnosed during the newborn period. Minimal clinical features and laboratory findings differ with previously reported patients, suggesting variants in their clinical expression. Adrenal insufficiency was variable within patients. All had severe IUGR and marked postnatal growth failure. Sequence analysis of DNA using an automated cycle from two patients revealed no mutation in the DAX1 gene. Analysis of the pedigree showed that the disease is inherited via the maternal line, even in the dead children with suspicion of the disease. Hence, the pattern of inheritance in this family of this unusual disorder, might be explained in terms of the genomic imprinting hypothesis with expression through maternal transmission involving an autosomal gene. This transmission may have considerable implications for genetic counseling. Furthermore, pediatric endocrinologists must be aware of the possible occurrence of this life-threatening condition in the offspring of non-affected women when related to a family member with the IMAGe association.
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