Lower back disease may be inherited: Study
Washington, Feb 03 (ANI): A new study has indicated that symptomatic lumbar disc disease, a condition caused by degeneration or herniation of the discs of the lower spine, may be inherited.
"The results of this study provide evidence based on a population of more than 2 million people, indicating that there likely is a genetic component in the development of this disease. Additionally, the factors that differentiate a symptomatic disc from a non-painful disc may also be affected by genetics," said study author Alpesh A. Patel, FACS, assistant professor of orthopaedic surgery at the University of Utah School of Medicine.
The researchers used data contained in the Utah Population Database, a public information repository containing health and genealogic data of more than 2 million Utah residents, examining health and family records of 1,264 individuals with lumbar disc disease, defined as either lumbar disc degeneration or lumbar disc herniation.
To measure how closely patients were related, the researchers used the Genealogical Index of Familiaity, which compares the average relatedness of affected individuals with expected relatedness in the general population. Relatedness is measured by generations or degrees:
first-degree relatives (or immediate family) including parents, offspring and siblings;
second-degree including grandchildren, grandparents, uncles, aunts, nieces, nephews, and half-siblings; and
third-degree comprising great-grandchildren, great-grandparents, great-aunts and great-uncles, grandnieces and grandnephews and first cousins.
In this study, only patients with at least three generations of genealogical data in the database were included.
The researchers also determined and calculated the Relative Risk (RR) for relatives. This measure defines the risk of lumbar disc disease among family members of patients compared to individuals without disease. Important Findings:
Individuals with lumbar disc disease were more likely to have family members with disc disease.
Relative risk for lumbar disc disease was significantly elevated in both close and distant relatives.
The combination of the two findings, given the large patient population, strongly supports a genetic basis to symptomatic lumbar disc disease.
"Although excess risk in the immediate family might indicate evidence of a genetic contribution, it could also simply indicate shared environment risks or household exposure that may be contributing to the disease," Patel noted.
The study has been published in the Journal of Bone and Joint Surgery (JBJS). (ANI)
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