Linking Genetics to Body Mass Index in Framingham Families
Author Information
Author(s): Roxana Moslehi, Alisa M Goldstein, Michael Beerman, Lynn Goldin, Andrew W Bergen
Primary Institution: National Cancer Institute, NIH, DHHS
Hypothesis
What genetic factors affect body mass index (BMI) in Framingham Heart Study families?
Conclusion
The study found significant genetic linkages to BMI on chromosomes 2, 3, and 11.
Supporting Evidence
- Significant familial correlations were observed in mother:father relative pairs and in all relative pairs except parent:daughter pairs.
- Single-point analysis provided evidence for linkage of loci to BMI at 23 markers.
- Multi-point analysis identified 42 loci on 12 chromosomes linked to BMI.
Takeaway
Scientists looked at families in Framingham to see how genes affect weight, and they found some important clues on three specific chromosomes.
Methodology
The study used genome-wide linkage analysis and sib-pair regression methods to assess genetic factors influencing BMI.
Potential Biases
Potential biases may arise from the selection of participants and the specific age range used for BMI measurements.
Limitations
The study focused on a specific age range (40-50 years) and may not capture BMI variations outside this range.
Participant Demographics
Participants were from the Framingham Heart Study, including individuals from two cohorts with a total of 4692 subjects.
Statistical Information
P-Value
p < 0.0001
Confidence Interval
95% CI for familial correlations provided in the results.
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
Want to read the original?
Access the complete publication on the publisher's website