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Arrotta, Kayela; Ferguson, Lisa; Thompson, Nicolas; Smuk, Victoria; Najm, Imad M.; Leu, Costin; Lal, Dennis; Busch, Robyn M.
Epilepsy & behavior, April 2024, 2024-Apr, 2024-04-00, 20240401, Letnik: 153Journal Article
•Little is understood about genetic factors in cognitive function and outcomes in TLE.•Results did not identify any significant relationship between PGS and cognition in TLE.•More research is needed to examine the role of genetic variation in cognition in TLE.•Future studies should seek to develop PGS specific to cognition in epilepsy. Demographic and disease factors are associated with cognitive deficits and postoperative cognitive declines in adults with pharmacoresistant temporal lobe epilepsy (TLE), but the role of genetic factors in cognition in TLE is not well understood. Polygenic scores (PGS) for neurological and neuropsychiatric disorders and IQ have been associated with cognition in patient and healthy populations. In this exploratory study, we examined the relationship between PGS for Alzheimer’s disease (AD), depression, and IQ and cognitive outcomes in adults with TLE. 202 adults with pharmacoresistant TLE had genotyping and completed neuropsychological evaluations as part of a presurgical work-up. A subset (n = 116) underwent temporal lobe resection and returned for postoperative cognitive testing. Logistic regression was used to determine if PGS for AD, depression, and IQ predicted baseline domain-specific cognitive function and cognitive phenotypes as well as postoperative language and memory decline. No significant findings survived correction for multiple comparisons. Prior to correction, higher PGS for AD and depression (i.e., increased genetic risk for the disorder), but lower PGS for IQ (i.e., decreased genetic likelihood of high IQ) appeared possibly associated with baseline cognitive impairment in TLE. In comparison, higher PGS for AD and IQ appeared as possible risk factors for cognitive decline following temporal lobectomy, while the possible relationship between PGS for depression and post-operative cognitive outcome was mixed. We did not observe any relationships of large effect between PGS and cognitive function or postsurgical outcome; however, results highlight several promising trends in the data that warrant future investigation in larger samples better powered to detect small genetic effects.
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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in: SICRIS
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