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Research Output

2000

The high affinity neurotensin receptor gene (NTSR1): comparative sequencing and association studies in schizophrenia

Austin, J., Buckland, P. R., Cardno, A. G., Williams, N. M., Spurlock, G., Hoogendoorn, B., Zammit, S., Jones, G., Sanders, R., Jones, L., McCarthy, G., Jones, S., Bray, N. J., McGuffin, P., Owen, M. J. & O'Donovan, M. C., 1 Sep 2000, In : Molecular Psychiatry. 5, 5, p. 552-557 6 p.

Research output: Contribution to journalArticle (Academic Journal)

24 Citations (Scopus)
2001

Aggressive behaviour in patients with schizophrenia is associated with catechol-O-methyltransferase genotype

Jones, G., Zammit, S., Norton, N., Hamshere, M. L., Jones, S. J., Milham, C., Sanders, R. D., McCarthy, G. M., Jones, L. A., Cardno, A. G., Gray, M., Murphy, K. C. & Owen, M. J., 1 Oct 2001, In : British Journal of Psychiatry. 179, 4, p. 351-355 5 p.

Research output: Contribution to journalArticle (Academic Journal)

92 Citations (Scopus)

Association analysis of NOTCH4 loci in schizophrenia using family and population-based controls

Sklar, P., Schwab, S. G., Williams, N. M., Daly, M., Schaffner, S., Maier, W., Albus, M., Trixler, M., Eichhammer, P., Lerer, B., Hallmayer, J., Norton, N., Williams, H., Zammit, S., Cardno, A. G., Jones, S. & McCarthy, G., 1 Jun 2001, In : Nature Genetics. 28, 2, p. 126-128 3 p.

Research output: Contribution to journalArticle (Academic Journal)

55 Citations (Scopus)

Mutation screening of the KCNN3 gene reveals a rare frameshift mutation

Bowen, T., Williams, N. M., Norton, N., Spurlock, G., Wittekindt, O. H., Morris-Rosendahl, D. J., Williams, H. J., Brzustowicz, L., Hoogendoorn, B., Zammit, S., Jones, G., Sanders, R., Jones, L. A., McCarthy, G., Jones, S., Bassett, A., Cardno, A. G., Owen, M. J. & O'Donovan, M. C., 1 May 2001, In : Molecular Psychiatry. 6, 3, p. 259-260 2 p.

Research output: Contribution to journalLetter (Academic Journal)

27 Citations (Scopus)
2002

Neurogenetics of schizophrenia

Zammit, S., O'Donovan, M. C. & Owen, M. J., 2002, Biological Psychiatry. D'haenen, H., Boer, J. A. D. & Willner, P. (eds.). Chichester: Wiley, p. 663-671 9 p.

Research output: Chapter in Book/Report/Conference proceedingOther chapter contribution

Schizophrenia and functional polymorphisms in the MAOA and COMT genes: No evidence for association or epistasis

Norton, N., Kirov, G., Zammit, S., Jones, G., Jones, S., Owen, R., Krawczak, M., Williams, N. M., O'Donovan, M. C. & Owen, M. J., 1 Jul 2002, In : American Journal of Medical Genetics. 114, 5, p. 491-496 6 p.

Research output: Contribution to journalArticle (Academic Journal)

Screening the human protocadherin 8 (PCDH8) gene in schizophrenia

Bray, N. J., Kirov, G., Owen, R. J., Jacobsen, N. J., Georgieva, L., Williams, H. J., Norton, N., Spurlock, G., Jones, S., Zammit, S., O'Donovan, M. C. & Owen, M. J., 1 Aug 2002, In : Genes, Brain and Behavior. 1, 3, p. 187-191 5 p.

Research output: Contribution to journalArticle (Academic Journal)

25 Citations (Scopus)

Screening the protocadherin 8 (PCDH8) gene in schizophrenia

Bray, N. J., Kirov, G., Owen, RJ., Jacobsen, NJ., Georgieva, L., Williams, HJ., Norton, N., Spurlock, G., Jones, S., Zammit, S., O'Donovan, M. C. & Owen, M. J., 1 Oct 2002, In : American Journal of Medical Genetics. 114, 7, p. 844-844 1 p.

Research output: Contribution to journalSpecial issue (Academic Journal)

Self reported cannabis use as a risk factor for schizophrenia in Swedish conscripts of 1969: Historical cohort study

Zammit, S., Allebeck, P., Andreasson, S., Lundberg, I. & Lewis, G., 23 Nov 2002, In : BMJ. 325, 7374, p. 1199-1201 3 p.

Research output: Contribution to journalArticle (Academic Journal)

623 Citations (Scopus)
2003

Association analysis of the HOPA12bp polymorphism in schizophrenia and manic depressive illness

Kirov, G., Georgieva, L., Nikolov, I., Zammit, S., Jones, G., Poriazova, N., Tolev, T., Owen, R., Jones, S. & Owen, M. J., 1 Apr 2003, In : American Journal of Medical Genetics, Part B: Neuropsychiatric Genetics. 118B, 1, p. 16-19 4 p.

Research output: Contribution to journalArticle (Academic Journal)

Association between PRODH and schizophrenia is not confirmed

Williams, H. J., Williams, N. M., Spurlock, G., Norton, N., Ivanov, D., McCreadie, R. G., Preece, A., Sharkey, V., Jones, S., Zammit, S., Nikolov, I., Kehaiov, I., Thapar, A., Murphy, K. C., Kirov, G., Owen, M. J. & O'Donovan, M. C., 1 Jul 2003, In : Molecular Psychiatry. 8, 7, p. 644-645 2 p.

Research output: Contribution to journalArticle (Academic Journal)

45 Citations (Scopus)

A systematic genomewide linkage study in 353 sib pairs with schizophrenia

Williams, N. M., Norton, N., Williams, H. J., Ekholm, B., Hamshere, M. L., Lindblom, Y., Chowdari, K. V., Cardno, A. G., Zammit, S., Jones, L. A., Murphy, K. C., Sanders, R. D., McCarthy, G. M., Gray, M. Y., Jones, G., Holmans, P. A., Nimgaonkar, V., Adolfson, R., Osby, U., Terenius, L. & 3 others, Sedvall, G., O'Donovan, M. C. & Owen, M. J., 1 Dec 2003, In : American Journal of Human Genetics. 73, 6, p. 1355-1367 13 p.

Research output: Contribution to journalArticle (Academic Journal)

103 Citations (Scopus)

Detailed analysis of PRODH and PsPRODH reveals no association with schizophrenia

Williams, H. J., Williams, N. M., Spurlock, G., Norton, N., Zammit, S., Kirov, G., Owen, M. J. & O'Donovan, M. C., 1 Jul 2003, In : American Journal of Medical Genetics, Part B: Neuropsychiatric Genetics. 120B, 1, p. 42-46 5 p.

Research output: Contribution to journalArticle (Academic Journal)

45 Citations (Scopus)

Investigating the association between cigarette smoking and schizophrenia using a cohort study

Zammit, S., Allebeck, P., Dalman, C., Lundberg, I., Hemmingsson, T. & Lewis, G., 2003, In : American Journal of Psychiatry. 160, p. 2216 - 2221 5 p.

Research output: Contribution to journalArticle (Academic Journal)

Mutation screening of the Homer gene family and association analysis in schizophrenia

Norton, N., Williams, H. J., Williams, N. M., Spurlock, G., Zammit, S., Jones, G., Jones, S., Owen, R., O'Donovan, M. C. & Owen, M. J., 1 Jul 2003, In : American Journal of Medical Genetics, Part B: Neuropsychiatric Genetics. 120B, 1, p. 18-21 4 p.

Research output: Contribution to journalArticle (Academic Journal)

46 Citations (Scopus)

Paternal age and risk for schizophrenia

Zammit, S., Allebeck, P., Dalman, C., Lundberg, I., Hemmingson, T., Owen, M. J. & Lewis, G., Nov 2003, In : British Journal of Psychiatry. 183, NOV., p. 405-408 4 p.

Research output: Contribution to journalArticle (Academic Journal)

113 Citations (Scopus)

Support for genetic variation in neuregulin 1 and susceptibility to schizophrenia

Williams, N. M., Preece, A., Spurlock, G., Norton, N., Williams, H. J., Zammit, S., O'Donovan, M. C. & Owen, M. J., 1 May 2003, In : Molecular Psychiatry. 8, 5, p. 485-487 3 p.

Research output: Contribution to journalArticle (Academic Journal)

202 Citations (Scopus)
2004

A longitudinal study of premorbid IQ score and risk of developing schizophrenia, bipolar disorder, severe depression, and other nonaffective psychoses

Zammit, S., Allebeck, P., David, A., Dalman, C., Hemmingsson, T., Lundberg, I. & Lewis, G., Apr 2004, In : Archives of General Psychiatry. 61 (4), p. 354 - 360 7 p.

Research output: Contribution to journalArticle (Academic Journal)

329 Citations (Scopus)

An investigation into the use of cannabis and tobacco as risk factors for schizophrenia

Zammit, S., 2004, (Unpublished) University of Cardiff.

Research output: Other contributionPhD thesis (not Bristol)

Exploring the relationship between cannabis use and psychosis

Zammit, S. & Lewis, G., 1 Oct 2004, In : Addiction. 99, 10, p. 1353-1355 3 p.

Research output: Contribution to journalArticle (Academic Journal)

17 Citations (Scopus)

Identification in 2 independent samples of a novel schizophrenia risk haplotype of the dystrobrevin binding protein gene (DTNBP1)

Williams, N. M., Preece, A., Mortis, DW., Spurlock, G., Bray, N. J., Stephens, M., Norton, N., Williams, H., Clement, M., Dwyer, S., Curran, C., Wilkinson, J., Escott-Price, V., Waddington, JL., Gill, M., Corvin, AP., Zammit, S., Kirov, G., Owen, M. J. & O'Donovan, M. C., 1 Apr 2004, In : Archives of General Psychiatry. 61, 4, p. 336-344 9 p.

Research output: Contribution to journalArticle (Academic Journal)

155 Citations (Scopus)

Interaction between neuregulin 1 and its receptor ERBB4 increases susceptibility to schizophrenia

Norton, N., Escott-Price, V., Morris, DW., Bray, N. J., Zammit, S., Williams, N. M., Williams, HJ., Preece, A., Dwyer, SL., Wilkinson, JC., Kirov, G., Buckland, P. R., Waddington, JL., Gill, M., Corvin, AP., Owen, M. J. & O'Donovan, M. C., 1 Sep 2004, In : American Journal of Medical Genetics, Part B: Neuropsychiatric Genetics. 130B, 1, p. 18 1 p.

Research output: Contribution to journalArticle (Academic Journal)

Parental age difference and schizophrenia: Authors' reply

Zammit, S., Allebeck, P., Dalman, C., Lundberg, I., Hemmingson, T., Owen, M. J. & Lewis, G. H., 1 Jun 2004, In : British Journal of Psychiatry. 184, 6, p. 540-541 2 p.

Research output: Contribution to journalLetter (Academic Journal)

1 Citation (Scopus)

Polymorphisms in the MAOA, MAOB, and COMT genes and aggressive behavior in schizophrenia

Zammit, S., Jones, G., Jones, S. J., Norton, N., Sanders, R. D., Milham, C., McCarthy, G. M., Jones, L. A., Cardno, A. G., Gray, M., Murphy, K. C., O'Donovan, M. C. & Owen, M. J., 1 Jul 2004, In : American Journal of Medical Genetics, Part B: Neuropsychiatric Genetics. 128B, 1, p. 19-20 2 p.

Research output: Contribution to journalArticle (Academic Journal)

66 Citations (Scopus)

Premorbid IQ and risk of developing schizophrenia, bipolar disorder, psychotic depression and other psychotic disorders: a longitudinal study

Zammit, S., Allebeck, P., David, A., Dalman, C., Lundberg, I., Hemmingsson, T. & Lewis, G., 2004, In : Archives of General Psychiatry. 61:, p. 354 - 60 7 p.

Research output: Contribution to journalArticle (Academic Journal)

Support for RGS4 as a susceptibility gene for schizophrenia

Williams, N. M., Preece, A. C., Spurlock, G., Norton, N., Williams, H. J., McCreadie, R. G., Buckland, P. R., Sharkey, V., Chowdari, K. V., Zammit, S., Nimgaonkar, V., Kirov, G., Owen, M. J. & O'Donovan, M. C., 1 Jan 2004, In : Biological Psychiatry. 55, 2, p. 192-195 4 p.

Research output: Contribution to journalArticle (Academic Journal)

112 Citations (Scopus)
2005

A meta-analysis of the MTHFR C677T polymorphism and schizophrenia risk

Lewis, S. J., Zammit, S., Gunnell, D. & Smith, G. D., 5 May 2005, In : American Journal of Medical Genetics, Part B: Neuropsychiatric Genetics. 135B, 1, p. 2-4 3 p.

Research output: Contribution to journalArticle (Academic Journal)

78 Citations (Scopus)

Environmental Epigenomics Conference

Lewis, SJ., Davey Smith, G., Bresnahan, M., Kirov, G., Karayiorgou, M., St Clair, D., Gunnell, DJ., Zammit, S. & Susser, E., 2005, Environmental Epigenomics Conference - Durham, North Carolina.

Research output: Chapter in Book/Report/Conference proceedingConference Contribution (Conference Proceeding)

No association between schizophrenia and polymorphisms in COMT in two large samples

Williams, H. J., Glaser, B., Williams, N. M., Norton, N., Zammit, S., MacGregor, S., Kirov, G. K., Owen, M. J. & O'Donovan, M. C., 2005, In : American Journal of Psychiatry. 162, 9, p. 1736-8 3 p.

Research output: Contribution to journalArticle (Academic Journal)

69 Citations (Scopus)

No evidence for association between polymorphisms in GRM3 and schizophrenia

Norton, N., Williams, H., Dwyer, S., Ivanov, D., Preece, A., Gerrish, A., Williams, N. M., Yerassimou, P., Zammit, S., O'Donovan, M. C. & Owen, M. J., 13 May 2005, In : BMC Psychiatry. 5, 23, 6 p., 23.

Research output: Contribution to journalArticle (Academic Journal)

Open Access
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43 Citations (Scopus)
185 Downloads (Pure)
2006

Evidence that interaction between neuregulin 1 and its receptor erbB4 increases susceptibility to schizophrenia

Norton, N., Escott-Price, V., Morris, D. W., Bray, N. J., Zammit, S., Williams, N. M., Williams, H. J., Preece, A. C., Dwyer, S., Wilkinson, J. C., Spurlock, G., Kirov, G., Buckland, P. R., Waddington, J. L., Gill, M., Corvin, A. P., Owen, M. J. & O'Donovan, M. J., 2006, In : American Journal of Medical Genetics, Part B: Neuropsychiatric Genetics. 141B, 1, p. 96-101 6 p.

Research output: Contribution to journalArticle (Academic Journal)

150 Citations (Scopus)

Genome wide significant linkage in schizophrenia conditioning on occurrence of depressive episodes

Hamshere, M. L., Williams, N. M., Norton, N., Williams, H., Cardno, A. G., Zammit, S., Jones, L. A., Murphy, K. C., Sanders, R., McCarthy, G., Gray, M. Y., Jones, G., Holmans, P. A., O'Donovan, M. C., Owen, M. J. & Craddock, N. J., 2006, In : Journal of Medical Genetics. 43, 7, p. 563-567 5 p.

Research output: Contribution to journalArticle (Academic Journal)

17 Citations (Scopus)

Phenotypic variation between parent-offspring trios and non-trios in genetic studies of schizophrenia

Zammit, S., Lewis, G., Thapar, A., Owen, R., Jones, G., Jones, S., Sanders, R., Milham, C., Mahdi, A., O'Donovan, M. C. & Owen, M. J., 1 Oct 2006, In : Journal of Psychiatric Research. 40, 7, p. 622-626 5 p.

Research output: Contribution to journalArticle (Academic Journal)

3 Citations (Scopus)

Self-reported psychotic symptoms in the general population: results from the longitudinal study of the British National Psychiatric Morbidity Survey

Wiles, N. J., Zammit, S., Bebbington, P., Singleton, N., Meltzer, H. & Lewis, G. H., May 2006, In : British Journal of Psychiatry. 188, 6, p. 519-526 8 p.

Research output: Contribution to journalArticle (Academic Journal)

179 Citations (Scopus)

Stressful life events, 5-HTT genotype and risk of depression

Zammit, S. & Owen, M. J., 1 Mar 2006, In : British Journal of Psychiatry. 188, 3, p. 199-201 3 p.

Research output: Contribution to journalEditorial (Academic Journal)

60 Citations (Scopus)
2007

Birth order and the severity of illness in schizophrenia

Gaughran, F., Blizard, R., Mohan, R., Zammit, S. & Owen, M. J., 1 Mar 2007, In : Psychiatry Research. 150, 2, p. 205-210 6 p.

Research output: Contribution to journalArticle (Academic Journal)

8 Citations (Scopus)

Cannabis and psychosis - Authors' reply

Zammit, S., Moore, T. & Lewis, G., 3 Nov 2007, In : Lancet. 370, 9598, p. 1539-1540 2 p.

Research output: Contribution to journalLetter (Academic Journal)

3 Citations (Scopus)

Cannabis use and risk of psychotic or affective mental health outcomes: a systematic review

Zammit, S., Lingford-Hughes, AR., Barnes, T., Jones, P., Lewis, G., Moore, THM. & Burke, MA., Jul 2007, In : Lancet. 370 (9584), p. 319 - 328 10 p.

Research output: Contribution to journalArticle (Academic Journal)

1418 Citations (Scopus)

Convergent evidence that oligodendrocyte lineage transcription factor 2 (OLIG2) and interacting genes influence susceptibility to schizophrenia [Conference Abstract]

O'Donovan, M. C., Holmans, P. A., Zammit, S., Williams, N. M., Escott-Price, V., Kirov, G., Craddock, N. J., Bray, N. J. & Owen, M. J., 1 Mar 2007, In : Schizophrenia Bulletin. 33, 2, p. 311-312 2 p.

Research output: Contribution to journalArticle (Academic Journal)

Genotype effects of CHRNA7, CNR1 and COMT in schizophrenia: interactions with tobacco and cannabis use

Zammit, S., Spurlock, G., Williams, H., Norton, N., Williams, N. M., O'Donovan, M. C. & Owen, M. J., Oct 2007, In : British Journal of Psychiatry. 191, 5, p. 402-407 6 p.

Research output: Contribution to journalArticle (Academic Journal)

143 Citations (Scopus)

Height and body mass index in young adulthood and risk of schizophrenia: a longitudinal study of 1 347 520 Swedish men

Zammit, S., Rasmussen, F., Farahmand, B., Gunnell, DJ., Lewis, G., Tynelius, P. & Brobert, GP., 1 Nov 2007, In : Acta Psychiatrica Scandinavica. 116, 5, p. 378-385 8 p.

Research output: Contribution to journalArticle (Academic Journal)

34 Citations (Scopus)

IGFI, growth pathway polymorphisms and schizophrenia: a pooling study

Gunnell, D., Lewis, SJ., Wilkinson, J., Georgieva, L., Davey Smith, G., Day, INM., Holly, JMP., O'Donovan, MC., Owen, MJ., Kirov, G. & Zammit, S., 1 Jan 2007, In : American Journal of Medical Genetics, Part B: Neuropsychiatric Genetics. 144B, 1, p. 117-120 4 p.

Research output: Contribution to journalArticle (Academic Journal)

17 Citations (Scopus)

Schizophrenia and Neural Tube Defects: Comparisons From an Epidemiological Perspective

Zammit, S., Lewis, SJ., Gunnell, DJ. & Davey Smith, G., Jul 2007, In : Schizophrenia Bulletin. 33, p. 853 - 858 6 p.

Research output: Contribution to journalArticle (Academic Journal)

26 Citations (Scopus)
2008

Authors' reply

Craddock, N. J., Antebi, D., Attenburrow, M-J., Bailey, T., Carson, A., Cowen, P., Craddock, B., Eagles, J., Ebmeie, K., Farmer, A., Fazel, S., Ferrier, N., Geddes, J., Goodwin, G., Harrison, P., Hawton, K., Hunter, S., Jacoby, R., Jones, I. R., Keedwell, P. A. & 17 others, Kerr, M. P., Mackin, P., McGuffin, P., McIntyre, D., McConville, P., Mountain, D., O'Donovan, M. C., Owen, M. J., Oyebode, F., Phillips, M. L., Price, J., Shah, P., Smith, D. J., Walters, J. T. R., Woodruff, P., Young, A. & Zammit, S., 1 Oct 2008, In : British Journal of Psychiatry.

Research output: Contribution to journalLetter (Academic Journal)

1 Citation (Scopus)

Commentary on 'The case for gene-environment interactions in psychiatry'

Zammit, S., Jul 2008, In : Current Opinion in Psychiatry. 21, 4, p. 326-327 2 p.

Research output: Contribution to journalComment/debate (Academic Journal)

4 Citations (Scopus)

Effects of cannabis use on outcomes of psychotic disorders: systematic review.

Zammit, S., Moore, THM., Lingford-Hughes, AR., Barnes, T., Jones, P., Burke, MA. & Lewis, G., 2008, In : British Journal of Psychiatry. 193, p. 357 - 363 7 p.

Research output: Contribution to journalArticle (Academic Journal)

170 Citations (Scopus)

Forum: the interplay of genes and environment in psychiatric disorders

McClellan, J. M., Susser, E., King, M-C., Rietschel, M., Riley, B. & Zammit, S., Jul 2008, In : Current Opinion in Psychiatry. 21, 4, p. 322-323 2 p.

Research output: Contribution to journalArticle (Academic Journal)

3 Citations (Scopus)

Identification of loci associated with schizophrenia by genome-wide association and follow-up

O'Donovan, M. C., Craddock, N. J., Norton, N., Williams, H. J., Peirce, T. R., Escott-Price, V., Nikolov, I., Hamshere, M. L., Carroll, L. S., Georgieva, L., Dwyer, S. L., Holmans, P. A., Marchini, J. L., Spencer, C. C. A., Howie, B., Leung, H-T., Hartmann, A. M., Möller, H-J., Morris, D. W., Shi, Y. & 40 others, Feng, G., Hoffmann, P., Propping, P., Vasilescu, C., Maier, W., Rietschel, M., Zammit, S., Schumacher, J., Quinn, E. M., Schulze, T. G., Williams, N. M., Giegling, I., Iwata, N., Ikeda, M., Darvasi, A., Shifman, S., He, L., Duan, J., Sanders, A. R., Levinson, D. F., Gejman, P. V., Gejman, P. V., Sanders, A. R., Duan, J., Levinson, D. F., Buccola, N. G., Mowry, B. J., Freedman, R., Amin, F., Black, D. W., Silverman, J. M., Byerley, W. F., Cloninger, C. R., Cichon, S., Nöthen, M. M., Gill, M., Corvin, A., Rujescu, D., Kirov, G. & Owen, M. J., 1 Sep 2008, In : Nature Genetics. 40, 9, p. 1053-1055 3 p.

Research output: Contribution to journalArticle (Academic Journal)

834 Citations (Scopus)

Impairments in cognition across the spectrum of psychiatric disorders: Evidence from a Swedish conscript cohort

David, A. S., Zammit, S., Lewis, G., Dalman, C. & Allebeck, P., Nov 2008, In : Schizophrenia Bulletin. 34, 6, p. 1035-1041 7 p.

Research output: Contribution to journalArticle (Academic Journal)

33 Citations (Scopus)

Investigating if psychosis-like symptoms (PLIKS) are associated with family history of schizophrenia or paternal age in the ALSPAC birth cohort

Zammit, S., Horwood, J., Thompson, A., Thomas, K., Menezes, P., Gunnell, D., Hollis, C., Wolke, D., Lewis, G. & Harrison, G., Sep 2008, In : Schizophrenia Research. 104, 1-3, p. 279-286 8 p.

Research output: Contribution to journalArticle (Academic Journal)

44 Citations (Scopus)