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Biomedical subjects

Holly K Tabor

Publications and source records attributed to Holly K Tabor.

3 recordsLinked to original sources

Sustainability in translational genomics research with undiagnosed patients: What is it, why do we need it, and how do we do it?

PURPOSE: Genomics research enrolling undiagnosed patients can provide answers for one-third of participants, and more can be diagnosed through future reanalysis. The long-term value for participants has raised questions of the sustainability of these studies, but the meaning, goals, and best practices for sustainability remain unclear. METHODS: We conducted semistructured interviews with researchers leading studies enrolling undiagnosed patients in the United States and Canada and used thematic content analysis to summarize key themes. RESULTS: Researchers lacked consensus regarding what sustainability was actually intended to sustain, variably referencing study procedures, personnel, data access, and participant recontact. However, the primary driver of sustainability was widely shared as the perceived obligation to continue to search for answers for undiagnosed participants. Proposed sustainability strategies included diversifying funding sources, developing centralized data infrastructure, and building collaborations across disciplines and institutions. Researchers also emphasized the need to address ethical concerns, to integrate research with clinical care, and for leadership from research funders to guide these efforts. CONCLUSION: Although genomics researchers perceived continued obligations to undiagnosed participants, they also lacked a shared understanding of the goals of sustainability and called for coordinated efforts to develop centralized infrastructure that integrated research and clinical care.

Humans↗

Lack of association between HoxA1 and HoxB1 gene variants and autism in 110 multiplex families.

A recent report suggested that the HoxA1 and/or HoxB1 genes play a role in susceptibility to autism. To determine whether these findings could be confirmed, we screened these genes for DNA polymorphisms by sequencing all exons in 24 individuals with autism. We identified the same sequence variants in the genes that appeared in this report, which include one single-base substitution variant in HoxA1 and a common haplotype in HoxB1. We performed an association study by applying the transmission disequilibrium test to detect possible association of these variants to autism in 110 multiplex families. Our results demonstrated no deviation from the null hypothesis of no association. We have also separately examined transmissions within individual mating types, for paternal versus maternal alleles, to affected versus unaffected children, and for transmission to affected boys versus girls. None of these subsets revealed significant deviation from the null expectation. Our interpretation of these findings is that it is unlikely that HoxA1 and HoxB1 play a significant role in the genetic predisposition to autism.

Autistic Disorder↗

Candidate-gene approaches for studying complex genetic traits: practical considerations.

Association studies with candidate genes have been widely used for the study of complex diseases. However, this approach has been criticized because of non-replication of results and limits on its ability to include all possible causative genes and polymorphisms. These challenges have led to pessimism about the candidate-gene approach and about the genetic analysis of complex diseases in general. We believe that these criticisms can be usefully countered with an appeal to the principles of epidemiological investigation.

Animals↗