@article {3477,
	title = {A novel P2RX2 mutation in an Italian family affected by autosomal dominant nonsyndromic hearing loss.},
	journal = {Gene},
	volume = {534},
	year = {2014},
	month = {2014 Jan 25},
	pages = {236-9},
	abstract = {<p>Hereditary hearing loss (HHL) is a common disorder accounting for at least 60\% of prelingual deafness. It is characterized by a large genetic heterogeneity, and despite the presence of a major gene, still there is a need to search for new causative mutations/genes. Very recently, a mutation within ATP-gated P2X(2) receptor (ligand-gated ion channel, purinergic receptor 2) gene (P2RX2) at DNFA41 locus has been reported leading to a bilateral and symmetrical sensorineural non-syndromic autosomal dominant HHL in two Chinese families. We performed a linkage analysis in a large Italian family with a dominant pattern of inheritance showing a significant 3.31 LOD score in a 2Mb region overlapping with the DNFA41 locus. Molecular analyses of P2RX2 identified a novel missense mutation (p.Gly353Arg) affecting a residue highly conserved across species. Visual inspection of the protein structure as obtained from comparative modeling suggests that substitution of the small glycine residue with a charged bulky residue such as an arginine that is close to the {\textquoteright}neck{\textquoteright} of the region responsible for ion channel gating should have a high energetic cost and should lead to a severely destabilization of the fold. The identification of a second most likely causative mutation in P2RX2 gene further supports the possible role of this gene in causing autosomal dominant HHL.</p>},
	keywords = {Amino Acid Sequence, Deafness, European Continental Ancestry Group, Female, Genotype, Hearing Loss, Sensorineural, Humans, Italy, Male, Molecular Sequence Data, Mutation, Missense, Pedigree, Receptors, Purinergic P2X2},
	issn = {1879-0038},
	doi = {10.1016/j.gene.2013.10.052},
	author = {Faletra, Flavio and Girotto, Giorgia and d{\textquoteright}Adamo, Adamo Pio and Vozzi, Diego and Morgan, Anna and Gasparini, Paolo}
}
@article {1956,
	title = {A novel CRYBB2 missense mutation causing congenital autosomal dominant cataract in an Italian family.},
	journal = {Ophthalmic Genet},
	volume = {34},
	year = {2013},
	month = {2013 Mar-Jun},
	pages = {115-7},
	abstract = {<p>Congenital cataract is a leading cause of visual impairment in children and brings approximately 10\% of childhood blindness worldwide. Molecular analysis revealed ~60 loci to be associated with several phenotypes of childhood cataracts. Until now, more than 30 loci and 18 genes on different chromosomes have been associated with autosomal dominant congenital cataract (ADCC). Here, we present a three-generation Italian family with a non syndromic ADCC. A linkage analysis carried out using HumanCytoSNP-12 DNA Analysis BeadChip led us to identify ten genomic regions virtually involved in the disease. All the genes located in these regions were scored for possible relationship with ADCC and, according to a strict clinical and genetic selection, 4 genes have been analyzed. A novel sequence variant was found in the CRYBB2 gene (p.Ser143Phe). This variant affects a conserved aminoacid in the third Greek key motif of the protein, cosegregates with the disease phenotype in all affected individuals and is not present both in the unaffected family members and 100 healthy control subjects. Finally, we identified the first CRYBB2 mutation in an Italian family causing a clinical picture of ADCC.</p>},
	keywords = {Amino Acid Sequence, beta-Crystallin B Chain, Cataract, DNA Mutational Analysis, Female, Genes, Dominant, Genetic Linkage, Genotype, Humans, Italy, Male, Molecular Sequence Data, Mutation, Missense, Pedigree, Phenotype},
	issn = {1744-5094},
	doi = {10.3109/13816810.2012.707273},
	author = {Faletra, Flavio and d{\textquoteright}Adamo, Adamo Pio and Pensiero, Stefano and Athanasakis, Emmanouil and Catalano, Dario and Bruno, Irene and Gasparini, Paolo}
}
