Men transmit MS more often to their children vs women: The Carter effect

Orhun H Kantarci, L. F. Barcellos, E. J. Atkinson, P. P. Ramsay, R. Lincoln, S. J. Achenbach, Mariza De Andrade, S. L. Hauser, Brian G Weinshenker

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Abstract

OBJECTIVE: Multiple sclerosis (MS) is approximately twice as common among women as men. If men have greater physiologic resistance to MS, they might theoretically require stronger genetic predisposition than women to overcome this resistance. In this circumstance, men would be expected to transmit the disease more often to their children, a phenomenon known as the Carter effect. The authors evaluated whether the Carter effect is present in MS. METHODS: The authors studied 441 children (45 with definite MS) of an affected father or mother (197 families of interest) from 3598 individuals in 206 multiplex pedigrees. The authors compared transmission of MS from affected men with transmission from affected women. RESULTS: Fathers with MS transmitted the disease to their children more often (transmitted: 18, not transmitted: 99) than mothers with MS (transmitted: 27, not transmitted: 296) (p = 0.032; OR: 1.99, 95% CI: 1.05, 3.77). Adjusting for both the sex of the affected child and multiple transmissions from a single affected parent, the sex of the affected parent remained as an independent risk factor for transmission of MS to children, fathers transmitting more often than mothers (p = 0.036; OR: 2.21, 95% CI: 1.05, 4.63). CONCLUSIONS: The authors have demonstrated the Carter effect in multiple sclerosis (MS). These observations may be explained by greater genetic loading in men that leads to relative excess paternal vs maternal transmission. Linkage analysis in genetic studies of MS may be more informative if patrilineal transmission were given additional weighting.

Original languageEnglish (US)
Pages (from-to)305-310
Number of pages6
JournalNeurology
Volume67
Issue number2
DOIs
StatePublished - Jul 2006

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Multiple Sclerosis
Mothers
Fathers
Genetic Linkage
Pedigree
Genetic Predisposition to Disease

ASJC Scopus subject areas

  • Neuroscience(all)

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Men transmit MS more often to their children vs women : The Carter effect. / Kantarci, Orhun H; Barcellos, L. F.; Atkinson, E. J.; Ramsay, P. P.; Lincoln, R.; Achenbach, S. J.; De Andrade, Mariza; Hauser, S. L.; Weinshenker, Brian G.

In: Neurology, Vol. 67, No. 2, 07.2006, p. 305-310.

Research output: Contribution to journalArticle

Kantarci, OH, Barcellos, LF, Atkinson, EJ, Ramsay, PP, Lincoln, R, Achenbach, SJ, De Andrade, M, Hauser, SL & Weinshenker, BG 2006, 'Men transmit MS more often to their children vs women: The Carter effect', Neurology, vol. 67, no. 2, pp. 305-310. https://doi.org/10.1212/01.wnl.0000225070.13682.11
Kantarci OH, Barcellos LF, Atkinson EJ, Ramsay PP, Lincoln R, Achenbach SJ et al. Men transmit MS more often to their children vs women: The Carter effect. Neurology. 2006 Jul;67(2):305-310. https://doi.org/10.1212/01.wnl.0000225070.13682.11
Kantarci, Orhun H ; Barcellos, L. F. ; Atkinson, E. J. ; Ramsay, P. P. ; Lincoln, R. ; Achenbach, S. J. ; De Andrade, Mariza ; Hauser, S. L. ; Weinshenker, Brian G. / Men transmit MS more often to their children vs women : The Carter effect. In: Neurology. 2006 ; Vol. 67, No. 2. pp. 305-310.
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T2 - The Carter effect

AU - Kantarci, Orhun H

AU - Barcellos, L. F.

AU - Atkinson, E. J.

AU - Ramsay, P. P.

AU - Lincoln, R.

AU - Achenbach, S. J.

AU - De Andrade, Mariza

AU - Hauser, S. L.

AU - Weinshenker, Brian G

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N2 - OBJECTIVE: Multiple sclerosis (MS) is approximately twice as common among women as men. If men have greater physiologic resistance to MS, they might theoretically require stronger genetic predisposition than women to overcome this resistance. In this circumstance, men would be expected to transmit the disease more often to their children, a phenomenon known as the Carter effect. The authors evaluated whether the Carter effect is present in MS. METHODS: The authors studied 441 children (45 with definite MS) of an affected father or mother (197 families of interest) from 3598 individuals in 206 multiplex pedigrees. The authors compared transmission of MS from affected men with transmission from affected women. RESULTS: Fathers with MS transmitted the disease to their children more often (transmitted: 18, not transmitted: 99) than mothers with MS (transmitted: 27, not transmitted: 296) (p = 0.032; OR: 1.99, 95% CI: 1.05, 3.77). Adjusting for both the sex of the affected child and multiple transmissions from a single affected parent, the sex of the affected parent remained as an independent risk factor for transmission of MS to children, fathers transmitting more often than mothers (p = 0.036; OR: 2.21, 95% CI: 1.05, 4.63). CONCLUSIONS: The authors have demonstrated the Carter effect in multiple sclerosis (MS). These observations may be explained by greater genetic loading in men that leads to relative excess paternal vs maternal transmission. Linkage analysis in genetic studies of MS may be more informative if patrilineal transmission were given additional weighting.

AB - OBJECTIVE: Multiple sclerosis (MS) is approximately twice as common among women as men. If men have greater physiologic resistance to MS, they might theoretically require stronger genetic predisposition than women to overcome this resistance. In this circumstance, men would be expected to transmit the disease more often to their children, a phenomenon known as the Carter effect. The authors evaluated whether the Carter effect is present in MS. METHODS: The authors studied 441 children (45 with definite MS) of an affected father or mother (197 families of interest) from 3598 individuals in 206 multiplex pedigrees. The authors compared transmission of MS from affected men with transmission from affected women. RESULTS: Fathers with MS transmitted the disease to their children more often (transmitted: 18, not transmitted: 99) than mothers with MS (transmitted: 27, not transmitted: 296) (p = 0.032; OR: 1.99, 95% CI: 1.05, 3.77). Adjusting for both the sex of the affected child and multiple transmissions from a single affected parent, the sex of the affected parent remained as an independent risk factor for transmission of MS to children, fathers transmitting more often than mothers (p = 0.036; OR: 2.21, 95% CI: 1.05, 4.63). CONCLUSIONS: The authors have demonstrated the Carter effect in multiple sclerosis (MS). These observations may be explained by greater genetic loading in men that leads to relative excess paternal vs maternal transmission. Linkage analysis in genetic studies of MS may be more informative if patrilineal transmission were given additional weighting.

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