Abstract
Epidemiological data and family studies in autism show that there is a genetic susceptibility factor in the aetiology of this syndrome. We carried out an association study in infantile autism. Two markers of the homeogene EN2 involved in cerebellar development were tested in a population of 100 autistic children and in a population of 100 control children. With the MP4 probe showing a PvuII polymorphism, significant differences in the allele frequencies between the two populations were found (chi 2 = 7.99, df = 1, p < 0.01). With the MP5 probe showing an SstI polymorphism, no difference appeared (chi 2 = 1.17, not significant). Several clinical examinations allowed us to characterise the autistic children. Most of them had high scores for autistic behaviour and language disorders but low scores for neurological syndromes. Two children had a significant family history and six children had confirmed syndromes or diseases of genetic origin. Discriminant analysis between clinical and molecular data did not give significant results. These preliminary results must be supported by further analyses of this gene and by studies of its potential involvement in the pathophysiology of the autistic syndrome.
Full text
PDFSelected References
These references are in PubMed. This may not be the complete list of references from this article.
- Adrien J. L., Lenoir P., Martineau J., Perrot A., Hameury L., Larmande C., Sauvage D. Blind ratings of early symptoms of autism based upon family home movies. J Am Acad Child Adolesc Psychiatry. 1993 May;32(3):617–626. doi: 10.1097/00004583-199305000-00019. [DOI] [PubMed] [Google Scholar]
- August G. J., Stewart M. A., Tsai L. The incidence of cognitive disabilities in the siblings of autistic children. Br J Psychiatry. 1981 May;138:416–422. doi: 10.1192/bjp.138.5.416. [DOI] [PubMed] [Google Scholar]
- Barthelemy C., Adrien J. L., Tanguay P., Garreau B., Fermanian J., Roux S., Sauvage D., Lelord G. The Behavioral Summarized Evaluation: validity and reliability of a scale for the assessment of autistic behaviors. J Autism Dev Disord. 1990 Jun;20(2):189–204. doi: 10.1007/BF02284718. [DOI] [PubMed] [Google Scholar]
- Bauman M. L. Microscopic neuroanatomic abnormalities in autism. Pediatrics. 1991 May;87(5 Pt 2):791–796. [PubMed] [Google Scholar]
- Bauman M., Kemper T. L. Histoanatomic observations of the brain in early infantile autism. Neurology. 1985 Jun;35(6):866–874. doi: 10.1212/wnl.35.6.866. [DOI] [PubMed] [Google Scholar]
- Bauman M., Kemper T. L. Histoanatomic observations of the brain in early infantile autism. Neurology. 1985 Jun;35(6):866–874. doi: 10.1212/wnl.35.6.866. [DOI] [PubMed] [Google Scholar]
- Courchesne E., Lincoln A. J., Yeung-Courchesne R., Elmasian R., Grillon C. Pathophysiologic findings in nonretarded autism and receptive developmental language disorder. J Autism Dev Disord. 1989 Mar;19(1):1–17. doi: 10.1007/BF02212714. [DOI] [PubMed] [Google Scholar]
- Courchesne E., Yeung-Courchesne R., Press G. A., Hesselink J. R., Jernigan T. L. Hypoplasia of cerebellar vermal lobules VI and VII in autism. N Engl J Med. 1988 May 26;318(21):1349–1354. doi: 10.1056/NEJM198805263182102. [DOI] [PubMed] [Google Scholar]
- Damasio H., Maurer R. G., Damasio A. R., Chui H. C. Computerized tomographic scan findings in patients with autistic behavior. Arch Neurol. 1980 Aug;37(8):504–510. doi: 10.1001/archneur.1980.00500570052008. [DOI] [PubMed] [Google Scholar]
- Davis C. A., Joyner A. L. Expression patterns of the homeo box-containing genes En-1 and En-2 and the proto-oncogene int-1 diverge during mouse development. Genes Dev. 1988 Dec;2(12B):1736–1744. doi: 10.1101/gad.2.12b.1736. [DOI] [PubMed] [Google Scholar]
- Davis C. A., Noble-Topham S. E., Rossant J., Joyner A. L. Expression of the homeo box-containing gene En-2 delineates a specific region of the developing mouse brain. Genes Dev. 1988 Mar;2(3):361–371. doi: 10.1101/gad.2.3.361. [DOI] [PubMed] [Google Scholar]
- DeLong G. R., Bean S. C., Brown F. R., 3rd Acquired reversible autistic syndrome in acute encephalopathic illness in children. Arch Neurol. 1981 Mar;38(3):191–194. doi: 10.1001/archneur.1981.00510030085013. [DOI] [PubMed] [Google Scholar]
- Einfeld S., Molony H., Hall W. Autism is not associated with the fragile X syndrome. Am J Med Genet. 1989 Oct;34(2):187–193. doi: 10.1002/ajmg.1320340211. [DOI] [PubMed] [Google Scholar]
- Folstein S. E., Piven J. Etiology of autism: genetic influences. Pediatrics. 1991 May;87(5 Pt 2):767–773. [PubMed] [Google Scholar]
- Folstein S., Rutter M. Infantile autism: a genetic study of 21 twin pairs. J Child Psychol Psychiatry. 1977 Sep;18(4):297–321. doi: 10.1111/j.1469-7610.1977.tb00443.x. [DOI] [PubMed] [Google Scholar]
- Garreau B., Barthelemy C., Sauvage D., Leddet I., LeLord G. A comparison of autistic syndromes with and without associated neurological problems. J Autism Dev Disord. 1984 Mar;14(1):105–111. doi: 10.1007/BF02408559. [DOI] [PubMed] [Google Scholar]
- Garreau B., Bruneau N., Martineau J. Autisme et psychoses de l'enfant. Signes neurologiques et examens complémentaires. Soins Psychiatr. 1987 Aug-Sep;(82-83):15–17. [PubMed] [Google Scholar]
- Gillberg C., Wahlström J. Chromosome abnormalities in infantile autism and other childhood psychoses: a population study of 66 cases. Dev Med Child Neurol. 1985 Jun;27(3):293–304. doi: 10.1111/j.1469-8749.1985.tb04539.x. [DOI] [PubMed] [Google Scholar]
- Hagberg B., Aicardi J., Dias K., Ramos O. A progressive syndrome of autism, dementia, ataxia, and loss of purposeful hand use in girls: Rett's syndrome: report of 35 cases. Ann Neurol. 1983 Oct;14(4):471–479. doi: 10.1002/ana.410140412. [DOI] [PubMed] [Google Scholar]
- Hier D. B., LeMay M., Rosenberger P. B. Autism and unfavorable left-right asymmetries of the brain. J Autism Dev Disord. 1979 Jun;9(2):153–159. doi: 10.1007/BF01531531. [DOI] [PubMed] [Google Scholar]
- Hérault J., Perrot A., Barthélémy C., Büchler M., Cherpi C., Leboyer M., Sauvage D., Lelord G., Mallet J., Müh J. P. Possible association of c-Harvey-Ras-1 (HRAS-1) marker with autism. Psychiatry Res. 1993 Mar;46(3):261–267. doi: 10.1016/0165-1781(93)90094-w. [DOI] [PubMed] [Google Scholar]
- Joyner A. L., Herrup K., Auerbach B. A., Davis C. A., Rossant J. Subtle cerebellar phenotype in mice homozygous for a targeted deletion of the En-2 homeobox. Science. 1991 Mar 8;251(4998):1239–1243. doi: 10.1126/science.1672471. [DOI] [PubMed] [Google Scholar]
- Köhler A., Logan C., Joyner A. L., Muenke M. Regional assignment of the human homeobox-containing gene EN1 to chromosome 2q13-q21. Genomics. 1993 Jan;15(1):233–235. doi: 10.1006/geno.1993.1045. [DOI] [PubMed] [Google Scholar]
- Le Roux I., Joliot A. H., Bloch-Gallego E., Prochiantz A., Volovitch M. Neurotrophic activity of the Antennapedia homeodomain depends on its specific DNA-binding properties. Proc Natl Acad Sci U S A. 1993 Oct 1;90(19):9120–9124. doi: 10.1073/pnas.90.19.9120. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Leaton R. N., Supple W. F., Jr Cerebellar vermis: essential for long-term habituation of the acoustic startle response. Science. 1986 Apr 25;232(4749):513–515. doi: 10.1126/science.3961494. [DOI] [PubMed] [Google Scholar]
- Lelord G., Muh J. P., Barthelemy C., Martineau J., Garreau B., Callaway E. Effects of pyridoxine and magnesium on autistic symptoms--initial observations. J Autism Dev Disord. 1981 Jun;11(2):219–230. doi: 10.1007/BF01531686. [DOI] [PubMed] [Google Scholar]
- Logan C., Joyner A. L. An SstI RFLP for the human homeo box-containing gene EN2. Nucleic Acids Res. 1989 Apr 11;17(7):2878–2878. doi: 10.1093/nar/17.7.2878. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Logan C., Joyner A. L. PvuII and RsaI RFLPs for the human homeo box-containing gene EN2. Nucleic Acids Res. 1989 Apr 11;17(7):2879–2879. doi: 10.1093/nar/17.7.2879. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Olsson B., Rett A. Behavioral observations concerning differential diagnosis between the Rett syndrome and autism. Brain Dev. 1985;7(3):281–289. doi: 10.1016/s0387-7604(85)80029-2. [DOI] [PubMed] [Google Scholar]
- Ornitz E. M. Neurophysiology of infantile autism. J Am Acad Child Psychiatry. 1985 May;24(3):251–262. doi: 10.1016/s0002-7138(09)61084-0. [DOI] [PubMed] [Google Scholar]
- Ornitz E. M., Ritvo E. R. Neurophysiologic mechanisms underlying perceptual inconstancy in autistic and schizophrenic children. Arch Gen Psychiatry. 1968 Jul;19(1):22–27. doi: 10.1001/archpsyc.1968.01740070024004. [DOI] [PubMed] [Google Scholar]
- Ritvo E. R., Freeman B. J., Mason-Brothers A., Mo A., Ritvo A. M. Concordance for the syndrome of autism in 40 pairs of afflicted twins. Am J Psychiatry. 1985 Jan;142(1):74–77. doi: 10.1176/ajp.142.1.74. [DOI] [PubMed] [Google Scholar]
- Ritvo E. R., Freeman B. J., Scheibel A. B., Duong T., Robinson H., Guthrie D., Ritvo A. Lower Purkinje cell counts in the cerebella of four autistic subjects: initial findings of the UCLA-NSAC Autopsy Research Report. Am J Psychiatry. 1986 Jul;143(7):862–866. doi: 10.1176/ajp.143.7.862. [DOI] [PubMed] [Google Scholar]
- Ritvo E. R., Jorde L. B., Mason-Brothers A., Freeman B. J., Pingree C., Jones M. B., McMahon W. M., Petersen P. B., Jenson W. R., Mo A. The UCLA-University of Utah epidemiologic survey of autism: recurrence risk estimates and genetic counseling. Am J Psychiatry. 1989 Aug;146(8):1032–1036. doi: 10.1176/ajp.146.8.1032. [DOI] [PubMed] [Google Scholar]
- Rumsey J. M., Duara R., Grady C., Rapoport J. L., Margolin R. A., Rapoport S. I., Cutler N. R. Brain metabolism in autism. Resting cerebral glucose utilization rates as measured with positron emission tomography. Arch Gen Psychiatry. 1985 May;42(5):448–455. doi: 10.1001/archpsyc.1985.01790280026003. [DOI] [PubMed] [Google Scholar]
- Rumsey J. M., Hamburger S. D. Neuropsychological findings in high-functioning men with infantile autism, residual state. J Clin Exp Neuropsychol. 1988 Mar;10(2):201–221. doi: 10.1080/01688638808408236. [DOI] [PubMed] [Google Scholar]
- Steffenburg S., Gillberg C., Hellgren L., Andersson L., Gillberg I. C., Jakobsson G., Bohman M. A twin study of autism in Denmark, Finland, Iceland, Norway and Sweden. J Child Psychol Psychiatry. 1989 May;30(3):405–416. doi: 10.1111/j.1469-7610.1989.tb00254.x. [DOI] [PubMed] [Google Scholar]
- Tanguay P. E., Edwards R. M., Buchwald J., Schwafel J., Allen V. Auditory brainstem evoked responses in autistic children. Arch Gen Psychiatry. 1982 Feb;39(2):174–180. doi: 10.1001/archpsyc.1982.04290020040008. [DOI] [PubMed] [Google Scholar]
- Zilbovicius M., Garreau B., Tzourio N., Mazoyer B., Bruck B., Martinot J. L., Raynaud C., Samson Y., Syrota A., Lelord G. Regional cerebral blood flow in childhood autism: a SPECT study. Am J Psychiatry. 1992 Jul;149(7):924–930. doi: 10.1176/ajp.149.7.924. [DOI] [PubMed] [Google Scholar]