@article {10822, title = {Next-generation sequencing identified SPATC1L as a possible candidate gene for both early-onset and age-related hearing loss.}, journal = {Eur J Hum Genet}, volume = {27}, year = {2019}, month = {2019 01}, pages = {70-79}, abstract = {

Hereditary hearing loss (HHL) and age-related hearing loss (ARHL) are two major sensory diseases affecting millions of people worldwide. Despite many efforts, additional HHL-genes and ARHL genetic risk factors still need to be identified. To fill this gap a large genomic screening based on next-generation sequencing technologies was performed. Whole exome sequencing in a 3-generation Italian HHL family and targeted re-sequencing in 464 ARHL patients were performed. We detected three variants in SPATC1L: a nonsense allele in an HHL family and a frameshift insertion and a missense variation in two unrelated ARHL patients. In silico molecular modelling of all variants suggested a significant impact on the structural stability of the protein itself, likely leading to deleterious effects and resulting in truncated isoforms. After demonstrating Spatc1l expression in mice inner ear, in vitro functional experiments were performed confirming the results of the molecular modelling studies. Finally, a candidate-gene population-based statistical study in cohorts from Caucasus and Central Asia revealed a statistically significant association of SPATC1L with normal hearing function at low and medium hearing frequencies. Overall, the amount of different genetic data presented here (variants with early-onset and late-onset hearing loss in addition to genetic association with normal hearing function), together with relevant functional evidence, likely suggest a role of SPATC1L in hearing function and loss.

}, issn = {1476-5438}, doi = {10.1038/s41431-018-0229-9}, author = {Morgan, Anna and Vuckovic, Dragana and Krishnamoorthy, Navaneethakrishnan and Rubinato, Elisa and Ambrosetti, Umberto and Castorina, Pierangela and Franz{\`e}, Annamaria and Vozzi, Diego and La Bianca, Martina and Cappellani, Stefania and Di Stazio, Mariateresa and Gasparini, Paolo and Girotto, Giorgia} } @article {3584, title = {Connexin 26 variant carriers have a better gastrointestinal health: is this the heterozygote advantage?}, journal = {Eur J Hum Genet}, volume = {23}, year = {2015}, month = {2015 May}, pages = {563-4}, issn = {1476-5438}, doi = {10.1038/ejhg.2014.151}, author = {Vuckovic, Dragana and Dallapiccola, Bruno and Franz{\`e}, Annamaria and Mauri, Lucia and Perrone, Maria Dolores and Gasparini, Paolo} } @article {7769, title = {Phenotypic and genetic characterization of a family carrying two Xq21.1-21.3 interstitial deletions associated with syndromic hearing loss.}, journal = {Mol Cytogenet}, volume = {8}, year = {2015}, month = {2015}, pages = {18}, abstract = {

BACKGROUND: Sensorineural hearing impairment is a common pathological manifestation in patients affected by X-linked intellectual disability. A few cases of interstitial deletions at Xq21 with several different phenotypic characteristics have been described, but to date, a complete molecular characterization of the deletions harboring disease-causing genes is still missing. Thus, the aim of this study is to realize a detailed clinical and molecular analysis of a family affected by syndromic X-linked hearing loss with intellectual disability.

RESULTS: Clinical analyses revealed a very complex phenotype that included inner ear malformations, vestibular problems, choroideremia and hypotonia with a peculiar pattern of phenotypic variability. Genomic analysis revealed, for the first time, the presence of two close interstitial deletions in the Xq21.1-21.3, harboring 11 protein coding, 9 non-coding genes and 19 pseudogenes. Among these, 3 protein coding genes have already been associated with X-linked hearing loss, intellectual disability and choroideremia.

CONCLUSIONS: In this study we highlighted the presence of peculiar genotypic and phenotypic details in a family affected by syndromic X-linked hearing loss with intellectual disability. We identified two, previously unreported, Xq21.1-21.3 interstitial deletions. The two rearrangements, containing several genes, segregate with the clinical features, suggesting their role in the pathogenicity. However, not all the observed phenotypic features can be clearly associated with the known genes thus, further study is necessary to determine regions involved.

}, issn = {1755-8166}, doi = {10.1186/s13039-015-0120-0}, author = {Iossa, Sandra and Costa, Valerio and Corvino, Virginia and Auletta, Gennaro and Barruffo, Luigi and Cappellani, Stefania and Ceglia, Carlo and Cennamo, Giovanni and d{\textquoteright}Adamo, Adamo Pio and D{\textquoteright}Amico, Alessandra and Di Paolo, Nilde and Forte, Raimondo and Gasparini, Paolo and Laria, Carla and Lombardo, Barbara and Malesci, Rita and Vitale, Andrea and Marciano, Elio and Franz{\`e}, Annamaria} } @article {1639, title = {Screening for GJB2 and GJB6 gene mutations in patients from Campania region with sensorineural hearing loss.}, journal = {Int J Audiol}, volume = {49}, year = {2010}, month = {2010 Apr}, pages = {326-31}, abstract = {

The aim of this study was to screen 349 patients affected by sensorineural hearing loss (SNHL), mostly from the Campania region (southern Italy), for GJB2 gene mutations and for two deletions of the GJB6 gene (del GJB6 -D13S1830 and del GJB6 -D13S1854). We identified pathogenetic GJB2 mutations in 51 cases (15\% of patients). No GJB6 mutation was found. We also examined the audiologic features of the patients for whom we had an etiologic diagnosis, in order to identify correlations between the severity of hearing loss and the type of mutation.

}, keywords = {Acoustic Stimulation, Adolescent, Adult, Audiometry, Auditory Perception, Child, Child, Preschool, Connexins, Genetic Predisposition to Disease, Genetic Testing, Hearing Loss, Sensorineural, Heterozygote, Homozygote, Humans, Italy, Mass Screening, Middle Aged, Mutation, Phenotype, Risk Factors, Severity of Illness Index, Young Adult}, issn = {1708-8186}, doi = {10.3109/14992021003601756}, author = {Chinetti, Viviana and Iossa, Sandra and Auletta, Gennaro and Laria, Carla and De Luca, Maria and Di Leva, Francesca and Riccardi, Pasquale and Giannini, Pasquale and Gasparini, Paolo and Ciccodicola, Alfredo and Marciano, Elio and Franz{\`e}, Annamaria} }