RESUMO
The Genetic Information System (GIS) is an Australian database of family genetic information. This health information technology system has been used by all 31 publicly operated clinical genetics services across New South Wales (NSW) and the Australian Capital Territory (ACT) for over a decade. As these services are separated geographically, the linkage engendered by the GIS facilitates the services to operate as a virtual state-wide service. This study aimed to explore the views of genetic counselors, patients, and carers on the use and storage of family genetic information in the GIS. Data were collected using audio-recorded semi-structured telephone interviews with genetic counselors experienced with using the GIS and focus groups with past patients/carers of the services. Using thematic analysis, four themes were identified from genetic counselor participant interviews (n = 12): (a) Shared information is valuable; (b) inconsistent data entry provides a challenge; (c) perceived need for the GIS to be current and integrated with other health systems; and (d) future challenges and strategies for the GIS. Three themes were identified following three focus groups with consumer participants (n = 14): (a) access to family genetic information provides a 'clearer picture'; (b) support, but caution, concerning use of information for relatives' health care; and (c) stewardship of family information. Genetic counselors and consumers identified similar advantages and privacy concerns regarding the sharing of family genetic information and all participants wanted patients/carers to be better informed about the GIS early in the genetic counseling process. Consumers were reassured by genetics health professionals' stewardship of their information, but surprised the GIS was not available nationally or for private geneticists or certain non-genetic specialists. These findings may inform further development of the GIS and other clinical genetic databases and lead to increased patient/carer knowledge through education and resource development.
Assuntos
Cuidadores , Conselheiros , Austrália , Família , Humanos , Sistemas de InformaçãoRESUMO
BACKGROUND: Squamates (lizards and snakes) are a speciose lineage of reptiles displaying considerable karyotypic diversity, particularly among lizards. Understanding the evolution of this diversity requires comparison of genome organisation between species. Although the genomes of several squamate species have now been sequenced, only the green anole lizard has any sequence anchored to chromosomes. There is only limited gene mapping data available for five other squamates. This makes it difficult to reconstruct the events that have led to extant squamate karyotypic diversity. The purpose of this study was to anchor the recently sequenced central bearded dragon (Pogona vitticeps) genome to chromosomes to trace the evolution of squamate chromosomes. Assigning sequence to sex chromosomes was of particular interest for identifying candidate sex determining genes. RESULTS: By using two different approaches to map conserved blocks of genes, we were able to anchor approximately 42 % of the dragon genome sequence to chromosomes. We constructed detailed comparative maps between dragon, anole and chicken genomes, and where possible, made broader comparisons across Squamata using cytogenetic mapping information for five other species. We show that squamate macrochromosomes are relatively well conserved between species, supporting findings from previous molecular cytogenetic studies. Macrochromosome diversity between members of the Toxicofera clade has been generated by intrachromosomal, and a small number of interchromosomal, rearrangements. We reconstructed the ancestral squamate macrochromosomes by drawing upon comparative cytogenetic mapping data from seven squamate species and propose the events leading to the arrangements observed in representative species. In addition, we assigned over 8 Mbp of sequence containing 219 genes to the Z chromosome, providing a list of genes to begin testing as candidate sex determining genes. CONCLUSIONS: Anchoring of the dragon genome has provided substantial insight into the evolution of squamate genomes, enabling us to reconstruct ancestral macrochromosome arrangements at key positions in the squamate phylogeny, demonstrating that fusions between macrochromosomes or fusions of macrochromosomes and microchromosomes, have played an important role during the evolution of squamate genomes. Assigning sequence to the sex chromosomes has identified NR5A1 as a promising candidate sex determining gene in the dragon.
