The study is limited by the lack of functional
Research gap analysis derived from 3 biology papers in our local library.
The gap
The study is limited by the lack of functional interpretation of common-variant signals. The study is also limited by the use of a post-GWAS interpretation approach, which may not capture all potential effector genes. The study is further l
Evidence profile
Sourced from the discussion and limitations section and stated challenges of the source papers, classified as general, drawn from work published between 2024 and 2026, spanning 3 journals. Those papers have been cited 7 times in total.
Research trend
Established — well-defined area with open sub-problems.
Supporting evidence — 3 representative gaps
- A rapid review of genetic association studies of parent-of-origin effects and fetal growth (2026) · Molecular and Cellular Pediatrics · doi
A major limitation of the candidate gene approach is that it is highly dependent on previous functional knowl- edge of the genes to inform variant selection, which, when this knowledge is insufficient, can introduce selec- tion bias [80]. Rather than testing genetic markers limited to a spe- cific gene or region, the GWAS design involves testing genetic markers across entire genomes in sample popu- lations to find variants statistically associated with the phenotype of interest.
generaldiscussionevidence 5/5Keywords: gene testing genetic markers major limitation candidate approach highly dependent previous functional knowl edge genes - Integrated post-GWAS, single-cell, and functional analyses prioritize TCTN2 at an osteoarthritis locus associated with innate immunity-related cartilage remodeling (2026) · Frontiers in Immunology · doi
The study is limited by the lack of functional interpretation of common-variant signals. The study is also limited by the use of a post-GWAS interpretation approach, which may not capture all potential effector genes. The study is further limited by the use of a single-cell analysis approach, which may not capture all cell types and states.
generallimitations sectionevidence 5/5Keywords: study limited lack functional interpretation common-variant signals use - Genome-Wide Association Study of Reproductive Traits in Large White Pigs (2024) · Animals · cited 7× · doi
The low heritability of reproductive traits poses a challenge for identifying significant genetic markers. The complex genetic architecture of reproductive traits, influenced by numerous genetic and environmental factors, poses a challenge for GWAS. The need for larger sample sizes to detect substantial genetic contributions is a challenge for future studies.
generalstated challengesevidence 5/5Keywords: low heritability reproductive traits poses challenge identifying significant
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