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Gender identity disorder in twins: a review of the case report literature

GUNTER HEYLENS UGent, GRETA DE CUYPERE UGent, Kenneth J Zucker, Cleo Schelfaut UGent, Els Elaut UGent, HEIDI VANDEN BOSSCHE UGent, Elfride De Baere UGent and Guy T'Sjoen UGent (2012) JOURNAL OF SEXUAL MEDICINE. 9(3). p.751-757
abstract
Introduction. The etiology of gender identity disorder (GID) remains largely unknown. In recent literature, increased attention has been attributed to possible biological factors in addition to psychological variables. Aim. To review the current literature on case studies of twins concordant or discordant for GID. Methods. A systematic, comprehensive literature review. Results. Of 23 monozygotic female and male twins, nine (39.1%) were concordant for GID; in contrast, none of the 21 same-sex dizygotic female and male twins were concordant for GID, a statistically significant difference (P = 0.005). Of the seven opposite-sex twins, all were discordant for GID. Conclusions. These findings suggest a role for genetic factors in the development of GID.
Please use this url to cite or link to this publication:
author
organization
year
type
journalArticle (original)
publication status
published
subject
keyword
DYSPHORIA, FAMILY, CHILD, CONCORDANT, PAIRS DISCORDANT, SEXUAL ORIENTATION, MONOZYGOTIC TWINS, TO-MALE TRANSSEXUALISM, Transsexualism, Biologic Factors in GID, Genetics, Twins, Gender Identity Disorder, SAMPLE, GIRLS
journal title
JOURNAL OF SEXUAL MEDICINE
J. Sex. Med.
volume
9
issue
3
pages
751 - 757
Web of Science type
Review
Web of Science id
000300831700013
JCR category
UROLOGY & NEPHROLOGY
JCR impact factor
3.513 (2012)
JCR rank
13/73 (2012)
JCR quartile
1 (2012)
ISSN
1743-6095
DOI
10.1111/j.1743-6109.2011.02567.x
language
English
UGent publication?
yes
classification
A1
copyright statement
I have transferred the copyright for this publication to the publisher
id
1974611
handle
http://hdl.handle.net/1854/LU-1974611
date created
2011-12-28 11:27:35
date last changed
2015-06-17 09:53:29
@article{1974611,
  abstract     = {Introduction. The etiology of gender identity disorder (GID) remains largely unknown. In recent literature, increased attention has been attributed to possible biological factors in addition to psychological variables. 
Aim. To review the current literature on case studies of twins concordant or discordant for GID. 
Methods. A systematic, comprehensive literature review. 
Results. Of 23 monozygotic female and male twins, nine (39.1\%) were concordant for GID; in contrast, none of the 21 same-sex dizygotic female and male twins were concordant for GID, a statistically significant difference (P = 0.005). Of the seven opposite-sex twins, all were discordant for GID. 
Conclusions. These findings suggest a role for genetic factors in the development of GID.},
  author       = {HEYLENS, GUNTER and DE CUYPERE, GRETA and Zucker, Kenneth J and Schelfaut, Cleo and Elaut, Els and VANDEN BOSSCHE, HEIDI and De Baere, Elfride and T'Sjoen, Guy},
  issn         = {1743-6095},
  journal      = {JOURNAL OF SEXUAL MEDICINE},
  keyword      = {DYSPHORIA,FAMILY,CHILD,CONCORDANT,PAIRS DISCORDANT,SEXUAL ORIENTATION,MONOZYGOTIC TWINS,TO-MALE TRANSSEXUALISM,Transsexualism,Biologic Factors in GID,Genetics,Twins,Gender Identity Disorder,SAMPLE,GIRLS},
  language     = {eng},
  number       = {3},
  pages        = {751--757},
  title        = {Gender identity disorder in twins: a review of the case report literature},
  url          = {http://dx.doi.org/10.1111/j.1743-6109.2011.02567.x},
  volume       = {9},
  year         = {2012},
}

Chicago
Heylens, Gunter, Griet De Cuypere, Kenneth J Zucker, Cleo Schelfaut, Els Elaut, HEIDI VANDEN BOSSCHE, Elfride De Baere, and Guy T’Sjoen. 2012. “Gender Identity Disorder in Twins: a Review of the Case Report Literature.” Journal of Sexual Medicine 9 (3): 751–757.
APA
Heylens, Gunter, De Cuypere, G., Zucker, K. J., Schelfaut, C., Elaut, E., VANDEN BOSSCHE, H., De Baere, E., et al. (2012). Gender identity disorder in twins: a review of the case report literature. JOURNAL OF SEXUAL MEDICINE, 9(3), 751–757.
Vancouver
1.
Heylens G, De Cuypere G, Zucker KJ, Schelfaut C, Elaut E, VANDEN BOSSCHE H, et al. Gender identity disorder in twins: a review of the case report literature. JOURNAL OF SEXUAL MEDICINE. 2012;9(3):751–7.
MLA
Heylens, Gunter, Griet De Cuypere, Kenneth J Zucker, et al. “Gender Identity Disorder in Twins: a Review of the Case Report Literature.” JOURNAL OF SEXUAL MEDICINE 9.3 (2012): 751–757. Print.