1 Supplemental File 1: Detailed information for ‘Newly matched genes from association studies’: The ‘newly matched genes’ (n=23) are listed under ‘Genes from association studies’ in Table 1, together with the ‘initially matched’ genes. Here we provide more detailed information and references that document how these ‘newly matched genes’ were selected and matched to the criteria. Gene symbol and full gene name are provided along with two studies defining the association with schizophrenia. Then detailed information on the match based on the four criteria is provided along with key reference papers. References related to this Supplement are listed in alphabetical order. 2 Supplemental Table 1: Association Studies for Schizophrenia Yang et al., 2008; Zhao et al., 2007 Criteria Comments References for Criteria VASC Endothelial cell tubulogenesis, inflammation induced angiogenesis Claudin 5 Wei and Hemmings, 2005; Ye et al., 2005 VASC DPYSL2 Dihydropyrimidinase-like 2 LIT EGF Epidermal growth factor GABRA1 Gamma-amino butyric receptor, alpha-1 Gamma-amino butyric receptor, beta-2 Glutamate receptor, ionotropic, kainate 3 Melaninconcentrating hormone receptor Neurogenin 1 Hong et al., 2005; Nakata et al., 2003 Antilla et al., 2004; Haenninen et al., 2007 Ikeda et al., 2005; Petryshen et al., 2005 Betcheva et al., 2009; Lo et al., 2007 Begni et al., 2002; Djurovic et al., 2009 Expressed in brain vasculature, bloodbrain barrier function, angiogenesis Hypoxia-ischemia in the neonatal mouse brain Malinda et al., 1999; Rathcke and Vestergaard, 2006 Koto et al., 2007 Gene Symbol Gene Name CHI3LI Chitinase-3 like 1 CLDN5 GABRB2 GRIK3 MCHR1 NEUROG1 NOS1 Nitric oxide synthetase 1 NPY Neuropeptide Y OLIG2 Oligodendrocyte lineage transcription factor 2 Phosphodiesterase 4B PDE4B PLA2G4A Phospholipase A2, group IVA PLXNA2 Plexin A2 Zhou Y. et al., 2008 LIT Upregulated after brain ischemia Naylor et al., 2005 IHR gene Moderate ischemia Liverman et al., 2004 IHR gene Focal brain ischemia Lu et al., 2004 IHR gene Focal brain ischemia Lu et al., 2004 Severinsen et al., 2006; Miller et al., 2009 Fanous et al., 2007; Ho et al., 2008 O’Donovan et al., 2008; Reif et al., 2006 Hall et al., 2007; Doi et al. 2007 IHR gene Ischemia study Bernaudin et al., 2002 LIT Expressed in progenitor cells after brain ischemia Widely studied in brain ischemia Tonchev et al., 2006 VASC Multiple vascular functions Georgieva et al., 2006; Huang et al., 2008 LIT Focal brain ischemia ZukowskaGrojec et al., 1998 Buffo et al., 2005 Fatemi et al., 2008; Kaehler et al., 2009 Hudson et al., 1996; Pae et al., 2004 Mah et al., 2006; Takeshita et al., 2008 IHR gene Focal brain ischemia Lu et al., 2003 IHR gene Global brain ischemia Yabukov et al., 2004 VASC Neuropilin coreceptor expressed in arteries Herzog et al., 2005 IHR gene Lu et al., 2004 3 PPP3CC SNAP25 Protein phosphatase 3, catalytic subunit, gamma isoform Synaptosomalassociated protein, 25-kD Horiuchi et al., 2007; Liu et al., 2007 LIT Regulated by hypoxia Zhou D. et al., 2008 Carroll et al., 2009; Kawashima et al., 2008 Morita et al., 2007; Yamada et al., 2005 Chen et al., 2004; Saviouk et al., 2007 Ni et al., 2005; Yang et al., 2004 IHR gene Focal brain ischemia Raghavendra Rao et al., 2002 LIT Delayed decrease after brain ischemia Wang and Zu, 2004 IHR gene Focal brain ischemia Lu et al., 2004 IHR gene Focal and global brain ischemia Lu et al., 2004; Yakubov et al., 2004 Stenzel-Poor et al., 2003 SRR Serine racemase SYN2 Synapsin II TP53 Tumor protein p53 UFD1L Ubiquitin fusion degradation 1like X box-binding protein 1 De Luca et al., 2001; Xie et al., 2008 Chen et al., 2004; Kakiuchi et al., 2004 IHR gene Focal brain ischemia LIT Tyrosine 3monooxygenase/ tryptophan 5monooxygenase activation protein, epsilon isoform Wong et al., 2005; Ikeda et al., 2008 IHR gene Regulation of endoplasmic reticulum stress after brain ischemia Focal brain ischemia XBP1 YWHAE Abbreviations: HIF = related to HIF-1 pathway; IHR gene = ischemiahypoxia response gene from database; LIT = individual reference documenting a link to ischemia-hypoxia response; VASC = vascular factor. Paschen et al., 2003 Kim et al., 2004 4 References for Supplemental File 1: Anttila S, Illi A, Kampman O, Mattila KM, Lehtimäki T, Leinonen E. Association of EGF polymorphism with schizophrenia in Finnish men. Neuroreport 2004; 15: 1215-1218. Begni S, Popoli M, Moraschi S, Bignotti S, Tura GB, Gennarelli M. Association between the ionotropic glutamate receptor kainate 3 (GRIK3) ser310ala polymorphism and schizophrenia. Mol Psychiatry 2002; 7: 416-418. Bernaudin M, Tang Y, Reilly M, Petit E, Sharp FR. Brain genomic response following hypoxia and re-oxygenation in the neonatal rat. Identification of genes that might contribute to hypoxia-induced ischemic tolerance. J Biol Chem 2002; 277: 39728-3938. Betcheva ET, Mushiroda T, Takahashi A, Kubo M, Karachanak SK, Zaharieva IT et al. Case-control association study of 59 candidate genes reveals the DRD2 SNP rs6277 (C957T) as the only susceptibility factor for schizophrenia in the Bulgarian population. J Hum Genet 2009; 54: 98-107. Buffo A, Vosko MR, Ertürk D, Hamann GF, Jucker M, Rowitch D et al. Expression pattern of the transcription factor Olig2 in response to brain injuries: implications for neuronal repair. Proc Natl Acad Sci U S A 2005; 102: 18183-18188. Carroll LS, Kendall K, O'Donovan MC, Owen MJ, Williams NM. Evidence that putative ADHD low risk alleles at SNAP25 may increase the risk of schizophrenia. Am J Med Genet B Neuropsychiatr Genet 2009; 150B: 893-899. Chen Q, He G, Wang XY, Chen QY, Liu XM, Gu Z et al. Positive association between synapsin II and schizophrenia. Biol Psychiatry 2004; 56: 177-181. Chen W, Duan S, Zhou J, Sun Y, Zheng Y, Gu N et al. A case-control study provides evidence of association for a functional polymorphism -197C/G in XBP1 to schizophrenia and suggests a sex-dependent effect. Biochem Biophys Res Commun 2004; 319: 866870. De Luca A, Pasini A, Amati F, Botta A, Spalletta G, Alimenti S et al. Association study of a promoter polymorphism of UFD1L gene with schizophrenia. Am J Med Genet 2001; 105: 529-533. Djurovic S, Kähler AK, Kulle B, Jönsson EG, Agartz I, Le Hellard S et al. A possible association between schizophrenia and GRIK3 polymorphisms in a multicenter sample of Scandinavian origin (SCOPE). Schizophr Res 2009; 107: 242-248. Doi N, Itokawa M, Hoshi Y, Arai M, Furukawa A, Ujike H et al. A resistance gene in disguise for schizophrenia? Am J Med Genet B Neuropsychiatr Genet 2007; 144B: 165173. Fanous AH, Chen X, Wang X, Amdur RL, O'Neill FA, Walsh D et al. Association between the 5q31.1 gene neurogenin1 and schizophrenia. Am J Med Genet B Neuropsychiatr Genet 2007; 144B: 207-214. Fatemi SH, King DP, Reutiman TJ, Folsom TD, Laurence JA, Lee S et al. PDE4B 5 polymorphisms and decreased PDE4B expression are associated with schizophrenia. Schizophr Res 2008; 101: 36-49. Georgieva L, Moskvina V, Peirce T, Norton N, Bray NJ, Jones L et al. Convergent evidence that oligodendrocyte lineage transcription factor 2 (OLIG2) and interacting genes influence susceptibility to schizophrenia. Proc Natl Acad Sci U S A 2006; 103: 12469-12474. Hall H, Lawyer G, Sillén A, Jönsson EG, Agartz I, Terenius L et al. Potential genetic variants in schizophrenia: a Bayesian analysis. World J Biol Psychiatry 2007; 8: 12-22. Hänninen K, Katila H, Anttila S, Rontu R, Maaskola J, Hurme M et al. Epidermal growth factor a61g polymorphism is associated with the age of onset of schizophrenia in male patients. J Psychiatr Res 2007; 41: 8-14. Herzog Y, Guttmann-Raviv N, Neufeld G. Segregation of arterial and venous markers in subpopulations of blood islands before vessel formation. Dev Dyn 2005; 232: 10471055. Ho BC, Epping E, Wang K, Andreasen NC, Librant A, Wassink TH. Basic helix-loop-helix transcription factor NEUROG1 and schizophrenia: effects on illness susceptibility, MRI brain morphometry and cognitive abilities. Schizophr Res 2008; 106: 192-199. Hong LE, Wonodi I, Avila MT, Buchanan RW, McMahon RP, Mitchell BD et al. Dihydropyrimidinase-related protein 2 (DRP-2) gene and association to deficit and nondeficit schizophrenia. Am J Med Genet B Neuropsychiatr Genet 2005; 136B: 8-11. Horiuchi Y, Ishiguro H, Koga M, Inada T, Iwata N, Ozaki N et al. Support for association of the PPP3CC gene with schizophrenia. Mol Psychiatry 2007;12: 891-893. Huang K, Tang W, Tang R, Xu Z, He Z, Li Z et al. Positive association between OLIG2 and schizophrenia in the Chinese Han population. Hum Genet 2008; 122: 659-660. Hudson CJ, Kennedy JL, Gotowiec A, Lin A, King N, Gojtan K et al. Genetic variant near cytosolic phospholipase A2 associated with schizophrenia. Schizophr Res 1996; 21: 111-116. Ikeda M, Hikita T, Taya S, Uraguchi-Asaki J, Toyo-oka K, Wynshaw-Boris A et al. Identification of YWHAE, a gene encoding 14-3-3epsilon, as a possible susceptibility gene for schizophrenia. Hum Mol Genet 2008; 17: 3212-3222. Ikeda M, Iwata N, Suzuki T, Kitajima T, Yamanouchi Y, Kinoshita Y et al. Association analysis of chromosome 5 GABAA receptor cluster in Japanese schizophrenia patients. Biol Psychiatry 2005; 58: 440-445. Kähler AK, Otnaess MK, Wirgenes KV, Hansen T, Jönsson EG, Agartz I et al. Association study of PDE4B gene variants in Scandinavian schizophrenia and bipolar disorder multicenter case-control samples. Am J Med Genet B Neuropsychiatr Genet 2010; 153B: 86-96. Kakiuchi C, Ishiwata M, Umekage T, Tochigi M, Kohda K, Sasaki T et al. Association of 6 the XBP1-116C/G polymorphism with schizophrenia in the Japanese population. Psychiatry Clin Neurosci 2004; 58: 438-440. Kawashima K, Kishi T, Ikeda M, Kitajima T, Yamanouchi Y, Kinoshita Y et al. No association between tagging SNPs of SNARE complex genes (STX1A, VAMP2 and SNAP25) and schizophrenia in a Japanese population. Am J Med Genet Neuropsychiatr Genet 2008; 147B: 1327-1331. Kim JB, Piao CS, Lee KW, Han PL, Ahn JI, Lee YS et al. Delayed genomic responses to transient middle cerebral artery occlusion in the rat. J Neurochem 2004; 89: 1271-1282. Koto T, Takubo K, Ishida S, Shinoda H, Inoue M, Tsubota K et al. Hypoxia disrupts the barrier function of neural blood vessels through changes in the expression of claudin-5 in endothelial cells. Am J Pathol 2007; 170: 1389-1397 Liu YL, Fann CS, Liu CM, Chang CC, Yang WC, Hung SI et al. More evidence supports the association of PPP3CC with schizophrenia. Mol Psychiatry 2007; 12: 966-974. Liverman CS, Cui L, Yong C, Choudhuri R, Klein RM, Welch KM et al. Response of the brain to oligemia: gene expression, c-Fos, and Nrf2 localization. Brain Res Mol Brain Res 2004; 126: 57-66. Lo WS, Harano M, Gawlik M, Yu Z, Chen J, Pun FW et al. GABRB2 association with schizophrenia: commonalities and differences between ethnic groups and clinical subtypes. Biol Psychiatry 2007; 61: 653-660. Lu A, Tang Y, Ran R, Clark JF, Aronow BJ, Sharp FR. Genomics of the periinfarction cortex after focal cerebral ischemia. J Cereb Blood Flow Metab 2003; 23: 786-810. Lu XC, Williams AJ, Yao C, Berti R, Hartings JA, Whipple R et al. Microarray analysis of acute and delayed gene expression profile in rats after focal ischemic brain injury and reperfusion. J Neurosci Res 2004; 77: 843-857. Mah S, Nelson MR, Delisi LE, Reneland RH, Markward N, James MR et al. Identification of the semaphorin receptor PLXNA2 as a candidate for susceptibility to schizophrenia. Mol Psychiatry 2006; 11: 471-478. Malinda KM, Ponce L, Kleinman HK, Shackelton LM, Millis AJ. Gp38k, a protein synthesized by vascular smooth muscle cells, stimulates directional migration of human umbilical vein endothelial cells. Exp Cell Res 1999; 250: 168-173. Miller CL, Murakami P, Ruczinski I, Ross RG, Sinkus M, Sullivan B et al. Two complex genotypes relevant to the kynurenine pathway and melanotropin function show association with schizophrenia and bipolar disorder. Schizophr Res 2009; 113: 259-267. Morita Y, Ujike H, Tanaka Y, Otani K, Kishimoto M, Morio A et al. A genetic variant of the serine racemase gene is associated with schizophrenia. Biol Psychiatry 2007; 61: 12001203. Nakata K, Ujike H, Sakai A, Takaki M, Imamura T, Tanaka Y et al. The human dihydropyrimidinase-related protein 2 gene on chromosome 8p21 is associated with 7 paranoid-type schizophrenia. Biol Psychiatry 2003; 53: 571-576. Naylor M, Bowen KK, Sailor KA, Dempsey RJ, Vemuganti R. Preconditioning-induced ischemic tolerance stimulates growth factor expression and neurogenesis in adult rat hippocampus. Neurochem Int 2005; 47: 565-572. Ni X, Trakalo J, Valente J, Azevedo MH, Pato MT, Pato CN et al. Human p53 tumor suppressor gene (TP53) and schizophrenia: case-control and family studies. Neurosci Lett 2005; 388: 173-178. O'Donovan MC, Craddock N, Norton N, Williams H, Peirce T, Moskvina V et al. Identification of loci associated with schizophrenia by genome-wide association and follow-up. Nat Genet 2008; 40: 1053-1055. Pae CU, Yu HS, Lee KU, Kim JJ, Lee CU, Lee SJ et al. BanI polymorphism of the cytosolic phospholipase A2 gene may confer susceptibility to the development of schizophrenia. Prog Neuropsychopharmacol Biol Psychiatry 2004; 28: 739-741. Paschen W, Aufenberg C, Hotop S, Mengesdorf T. Transient cerebral ischemia activates processing of xbp1 messenger RNA indicative of endoplasmic reticulum stress. J Cereb Blood Flow Metab 2003; 23: 449-461. Petryshen TL, Middleton FA, Tahl AR, Rockwell GN, Purcell S, Aldinger KA et al. Genetic investigation of chromosome 5q GABAA receptor subunit genes in schizophrenia. Mol Psychiatry 2005; 10: 1074-1088. Raghavendra Rao VL, Bowen KK, Dhodda VK, Song G, Franklin JL et al. Gene expression analysis of spontaneously hypertensive rat cerebral cortex following transient focal cerebral ischemia. J Neurochem 2002; 83: 1072-1086. Rathcke CN, Vestergaard H. YKL-40, a new inflammatory marker with relation to insulin resistance and with a role in endothelial dysfunction and atherosclerosis. Inflamm Res 2006; 55: 221-227. Saviouk V, Moreau MP, Tereshchenko IV, Brzustowicz LM. Association of synapsin 2 with schizophrenia in families of Northern European ancestry. Schizophr Res 2007; 96: 100-111. Severinsen JE, Als TD, Binderup H, Kruse TA, Wang AG, Vang M et al. Association analyses suggest GPR24 as a shared susceptibility gene for bipolar affective disorder and schizophrenia. Am J Med Genet B Neuropsychiatr Genet 2006; 141B: 524-533. Shinkai T, Ohmori O, Hori H, Nakamura J. Allelic association of the neuronal nitric oxide synthase (NOS1) gene with schizophrenia. Mol Psychiatry 2002; 7: 560-563. Stenzel-Poore MP, Stevens SL, Xiong Z, Lessov NS, Harrington CA, Mori M et al. Effect of ischaemic preconditioning on genomic response to cerebral ischaemia: similarity to neuroprotective strategies in hibernation and hypoxia-tolerant states. Lancet 2003; 362: 1028-1037. Takeshita M, Yamada K, Hattori E, Iwayama Y, Toyota T, Iwata Y et al. Genetic 8 examination of the PLXNA2 gene in Japanese and Chinese people with schizophrenia. Schizophr Res 2008; 99: 359-364. Tonchev AB, Yamashima T, Sawamoto K, Okano H. Transcription factor protein expression patterns by neural or neuronal progenitor cells of adult monkey subventricular zone. Neuroscience 2006; 139: 1355-1367. Wang LZ, Zhu XZ. Serine racemase expression in mouse cerebral cortex after permanent focal cerebral ischemia. Acta Pharmacol Sin 2004; 25: 436-441. Wei J, Hemmings GP. A study of the combined effect of the CLDN5 locus and the genes for the phospholipid metabolism pathway in schizophrenia. Prostaglandins Leukot Essent Fatty Acids 2005; 73: 441-445. Wong AH, Likhodi O, Trakalo J, Yusuf M, Sinha A, Pato CN et al. Genetic and postmortem mRNA analysis of the 14-3-3 genes that encode phosphoserine/threoninebinding regulatory proteins in schizophrenia and bipolar disorder. Schizophr Res 2005; 78: 137-146. Xie L, Ye L, Ju G, Xu Q, Zhang X, Liu S et al. A family- and population-based study of the UFD1L gene for schizophrenia. Am J Med Genet B Neuropsychiatr Genet 2008;147B: 1076-1079. Yakubov E, Gottlieb M, Gil S, Dinerman P, Fuchs P, Yavin E. Overexpression of genes in the CA1 hippocampus region of adult rat following episodes of global ischemia. Brain Res Mol Brain Res 2004; 127: 10-26. Yamada K, Ohnishi T, Hashimoto K, Ohba H, Iwayama-Shigeno Y, Toyoshima M et al. Identification of multiple serine racemase (SRR) mRNA isoforms and genetic analyses of SRR and DAO in schizophrenia and D-serine levels. Biol Psychiatry 2005; 57: 14931503. Yang MS, Morris DW, Donohoe G, Kenny E, O'Dushalaine CT, Schwaiger S et al. Chitinase-3-like 1 (CHI3L1) gene and schizophrenia: genetic association and a potential functional mechanism. Biol Psychiatry 2008; 64: 98-103. Yang Y, Xiao Z, Chen W, Sang H, Guan Y, Peng Y et al. Tumor suppressor gene TP53 is genetically associated with schizophrenia in the Chinese population. Neurosci Lett 2004; 369: 126-131. Ye L, Sun Z, Xie L, Liu S, Ju G, Shi J et al. Further study of a genetic association between the CLDN5 locus and schizophrenia. Schizophr Res 2005; 75: 139-141. Zhao X, Tang R, Gao B, Shi Y, Zhou J, Guo S et al. Functional variants in the promoter region of Chitinase 3-like 1(CHI3L1) and susceptibility to schizophrenia. Am J Hum Genet 2007; 80: 12-18. Zhou D, Wang J, Zapala MA, Xue J, Schork NJ, Haddad GG. Gene expression in mouse brain following chronic hypoxia: role of sarcospan in glial cell death. Physiol Genomics 2008; 32: 370-379. 9 Zhou Y, Bhatia I, Cai Z, He QY, Cheung PT, Chiu JF. Proteomic analysis of neonatal mouse brain: evidence for hypoxia- and ischemia-induced dephosphorylation of collapsin response mediator proteins. J Proteome Res 2008; 7: 2507-2515. Zukowska-Grojec Z, Karwatowska-Prokopczuk E, Rose W, Rone J, Movafagh S, Ji H et al. Neuropeptide Y: a novel angiogenic factor from the sympathetic nerves and endothelium. Circ Res 1998; 83: 187-195.