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ESF & ICGEB Joint Workshop:
The pathology of pre-mRNA splicing: diagnostic and mechanistic aspects

7-9 April 2005
Trieste, Italy

Organisers
Report
1. Summary
2. Scientific content
3. Faculty
4. Programme
5. List of participants

Organisers:

Francisco E. Baralle, ICGEB Trieste, Italy
Franco Pagani, ICGEB Trieste, Italy

Report

Summary

The joint ESF and ICGEB workshop "The pathology of pre-mRNA splicing: diagnostic and mechanistic aspects" took place in Trieste, Italy April 7-9, 2005 and saw a total of 75 participants from 23 countries and 11 faculty members. The workshop has provided a unique forum for experts and students, mostly young researchers, to meet and investigate the connection between research in different pre-mRNA processing and human molecular genetics. The basic idea of the workshop was to establish a fruitful exchange of ideas and experience between researchers in "basic splicing" and researchers in "human genetics". In fact, disease-causing mutations that unexpectedly affect splicing may lead to discovery of new basic processes and on the other hand the deep knowledge of the basic process may explain and predict the effect of a mutation on splicing. These aspects were full investigated through a total of 26 scientific presentations (13 from the faculty and 13 from participants) over the three-day period. The presentations covered the basic mechanism in pre mRNA processing and the impact of splicing defects in human pathology. The role of splicing pathology was addressed in several human diseases including Cystic fibrosis, Spinal Muscular Athrophy, Ataxia telangectasia, Muscular dystrophy, Neurofibromatosis. To stimulate discussion, the faculty members made a general overview followed by the presentation of novel data. The majority of presentations and relevant scientific publications were available to download for the participants on a dedicated web site.

Scientific Content

The scientific content of the meeting opened with a first session to address current knowledge and open questions on the basic mechanisms of pre mRNA processing, which are relevant in human pathology. Adrian Krainer, (Cold Spring Harbour Laboratory, New York, Usa) evaluated the determinant and complexity of exon identity in the splicing muscular atrophy genes SMN1 and SMN2. After an overview on human proteins involved in the two catalytic steps of splicing and on the regulation of alternative splicing he showed new insight on the specificity in the recognition of exonic splicing enhancer and silencer elements. In particular he focused on the mechanisms by which single point mutations in exons result in exon skipping, leading to many genetic diseases and on dedicated computer programs. Chris Smith (University of Cambridge, UK) has analyzed the mechanism of regulation of alternatively spliced exons with distant branch sites and Benoit Chabot (Universite de Shrerbrooke, Canada) the control of alternative splicing in apoptotic genes. The multiple roles of Arginine/serine -rich splicing factors in RNA processing were evaluated by Javier Caceres (Western General Hospital, Edinburgh, UK). The Ser-Arg-rich (SR) proteins comprise a large family of nuclear phosphoproteins that are required for constitutive and alternative splicing. A subset of SR proteins shuttles continuously between the nucleus and the cytoplasm, suggesting that the role of shuttling SR proteins in gene expression may not be limited to nuclear pre-mRNA splicing, but may also include unknown cytoplasmic functions. He shows that SR proteins associate with translating ribosomes and stimulate translation both in vivo and in vitro. The production of functional messenger RNA in eukaryotes requires not only transcript synthesis by RNA polymerase II (Pol II) but also multiple RNA-processing steps such as capping, splicing, polyadenylation, and RNA editing. Recent research has shown that many of these processing steps occur cotranscriptionally, revealing a close association (coupling) between transcription and mRNA processing. Alberto Kornblihtt (University of Buenos Aires, Argentina) has analyzed the influence of transcriptional elongation on splicing patterns across larger genes. He presented evidence of a polar effect for alternative splicing. It appears that the inclusion of an upstream alternative exon enhances the subsequent inclusion of a downstream alternative exon in the same nascent transcript. This exciting development could open the way to understand how remote alternative splicing events might be coordinated within the same transcript, possibly through interactions that occur during elongation. The interconnections between transcription and mRNA processing was further analyzed by Nick Proudfoot (University of Oxford, UK) showing new insights into this coupling process between mRNA 3'___ end processing and polyadenylation. Depletion of a nuclear 5'-3'___ exonuclease (Xrn2 in human cells) causes a clear termination defect, and the exonuclease acts like a molecular torpedo by attaching to the 5'___ end of the nascent RNA generated by cleavage either at the poly(A) signal or at cotranscriptional cleavage sites. A general overview and the genetic programs of alternative splicing with a focus on splicing regulatory factors that assist in the recognition of the 5' splice was done by J.Valcarcel (ICREA Barcelona, Spain). The role of RNA secondary structure determinant and the methods to detect changes in secondary structure due to mutations were analyzed by E. Buratti (Molecular Pathology, ICGEB, Trieste, Italy) providing interesting examples in CFTR and ATM genes. The second part of the meeting was mainly dedicated to the impact of splicing defects in human pathology. F.E. Baralle (Molecular Pathology, ICGEB, Trieste, Italy) provided new insight on the mechanism that cause aberrant splicing of CFTR exon 9 associated to classic and non-classic forms of Cystic Fibrosis due to unfavorable polymorphic TGmTn repeats in intron 8 and on splicing diagnostic tools. Among the multiple regulatory cis and trans acting elements that influence CFTR exon 9 splicing, the interaction of splicing factor TDP43 with the polymorphic UG repeats in intron 9 at the 3' splice site was shown to be critical for its definition. Additional data on CFTR splicing and associated CF syndromes was provided by F Pagani, Human Mol Genet, ICGEB, Trieste, Italy) and by Thilo Doerk (Hannover Medical School, Gernany) that evaluated the effect of synonymous mutations on splicing and the identification of disease causing mutations in genomic screening, respectively. Potential applications and limitations of currently available in vitro and in vivo splicing diagnostic tolls were discussed.
T. Cooper (Baylor Collage of Medicine, Houston, USA) illustrated the inactivation of splicing regulators in Myotonic Dystrophy caused by a CTG expansion in the 3' untranslated region of the DM protein kinase. The mechanism by which CUG repeats RNA induces disease is an RNA gain of function that involves CUG - repeats binding proteins. The presentation focused on the effect of these CUG binding proteins on multiple splicing events providing new insight of explain their role in the pathogenesis of the disease. The role of alternative splicing regulation in cancer was evaluated by L.M. Montuenga, (University Navarra, Spain) that presented an extended analysis of hnRNPs expression in lung cancers and by G Biamonti, (CNR, Pavia, Italy) with a molecular study on the regulation of the Ron proto-oncogene. The role of chaperoning snRNP biogenesis in SMA was evaluated by L. Pellizzoni (Dulbecco Institute, Rome, Italy) and its relevance in Spinal Muscular Atrophy.

Several examples of unexpected splicing mutations along with mechanistic insights and diagnostic aspects were provided by several presentations from the participants. In particular, C. Lazaro (CGMM, Barcelona Spain) showed that a significant amount of mutations in the NF1 gene (missense, nonsense or even synonymous) cause unexpectedly a splicing defect, pointing to a better definition of the mechanism by which mutations in a gene cause the disease. New aberrant splicing events were described in ATR, SBCAD, Fanconi anemia and Prader-Willy syndrome by P. Madsen (Aahaus University, Denmark), K. Neveling (University of Wuerzburg, Germany) and S. Stamm (Institute of Biochemistry, University of Erlangen, Germany), respectively. Interestingly, in the Prader-Willy syndrome a regulation of alternative splicing by snoRNA was shown to be involved. New strategies to correct splicing defects were discussed in several presentations during the meeting such as the use of ESSENCE compounds developed by A. Krainer to rescue exon skipping or modified oligonucleotides by Chabot. Three presentations from M. Asparuhova, (University of Bern, Switzerland), A Aartsma-Rus (Leiden University Medical Centre, The Netherlands) and M. Nissim-Rafina (The Hebrew University, Jerusalem, Israel) discussed specific strategies to correct splicing in HIV, Duchenne Muscular Dystrophy and CFTR using small nuclear RNAs, antisense oligonucleotides and splicing factor modulation, respectively.


Faculty
G. Biamonti (Istituto di Genetica Biochimicaed Evoluzionistica-CNR, Pavia, Italy)
J. F. Caceres (Western General Hospital, Edinburgh, UK)
B. Chabot (Université de Sherbrooke, Québec, Canada)
T. A. Cooper (Baylor College of Medicine, Houston, Texas)
A. R. Kornblihtt (Universidad de Buenos Aires, Argentina)
A. Krainer (Cold Spring Harbor Laboratory, NewYork, USA)
L. Pellizzoni (Dulbecco Telethon Institute at the Institute of Cell Biology-CNR, Rome, Italy)
N. J. Proudfoot (University of Oxford, UK)
C. Smith (University of Cambridge, UK)
T. Dörk (Medical School of Hannover, Gemany)
J. Valcárcel (ICREA and Centre de Regulacio Genomica,B arcelona, Spain)


Programme
Thursday, 7 April
15.00-16.00 Registration and Welcome Coffee ICGEB Foyer, W Building
16.00-16.15 Opening Remarks Francisco E. Baralle, Director-General, ICGEB, Trieste, Italy

1st Section – Basic Mechanisms of pre-mRNA Processing
16.15-16.45 Determinants of Exon Identity in the Spinal Muscular Atrophy Genes, SMN1 or SMN2
Adrian Krainer, Cold Spring Harbor Laboratory, New York, USA
16.50-17.20 Alternatively Spliced Exons with Distant Branch Points
Christopher W.J. Smith, University of Cambridge, UK
17.25-17.55 Interconnecting Transcription and Messenger RNA Processing in Eukaryotes
Nicholas J. Proudfoot, University of Oxford, UK
18.00-18.30 Control of Alternative Splicing in Apoptotic Genes
Benoit Chabot, Université de Sherbrooke, Québec, Canada
18.35 Get-together Party ICGEB Foyer, W Building
19.30 Bus to hotel

Friday, 8 April
2nd Section – Basic Mechanisms of pre-mRNA Processing
09.00-09.30 Multiple Roles of Arginine/Serine-rich Splicing Factors in RNA Processing
Javier F. Caceres, Western General Hospital, Edinburgh, UK
09.35-10.05 A Polar Mechanism Coordinates Different Regions of
Alternative Splicing within a Single Gene
Alberto Kornblihtt, Universidad de Buenos Aires, Argentina
10.10-10.40 Genetic Programmes of Alternative Splicing Regulation
Juan Valcárcel, ICREA and Centre de Regulació Genòmica, Barcelona, Spain
10.45-11.15 Coffee Break ICGEB Foyer, W Building
11.15-11.45 Influence of RNA secondary structure on pre-mRNA splicing processing
Emanuele Buratti, ICGEB, Trieste, Italy
11.50-12.05 A conserved intronic region in alpha-tropomyosin behaves as a phantom exon by coupling alternative splicing to NMD
Sushma Nagaraja Grellscheid, University of Cambridge, UK
12.10-12.25 Intron retention due to activated exonic splicing enhancer as a cause of homocystinuria
Katerina Betincova, Charles University, Prague, Czech Republic
12.30-12.45 The Prp16p ATPase-dependent remodeling the catalytic core between the two steps of splicing is antagonised by Isy1p
Tommaso Villa, University of California, San Francisco, CA, USA
13.30-14.30 Lunch Cafeteria, Ground Floor, C Building

3rd Section – The Impact of Splicing Defects in Human Pathology/1
14.30-15.00 Aberrant splicing of human CFTR exon 9
Francisco E. Baralle
15.05-15.35 Pathogenesis of Myotonic Dystrophy caused by Disrupted Regulation of Alternative Splicing
Thomas A. Cooper, Baylor College of Medicine, Houston, USA
15.40-16.10 Splicing Associated Sequence Bias in Mammalian CFTR Exon 12 Evolution
Franco Pagani, ICGEB, Trieste, Italy
16.15-16.45 Identification of Disease-causing Splicing Mutations in Genomic Screenings
Thilo Dörk, Hannover Medical School, Germany
16.50-17.10 Selection-driven Polymorphism in the Major Histocompatibility Complex and Pre-mRNA Splicing
Igor Vorechovsky, School of Medicine, University of Southampton, UK
17.15-17.50 Coffee break ICGEB Foyer, W Building
17.50-18.05 An identical A>G mutation in a 7 nt. shared exonic motif causes exon skipping in the SBCAD and ATR genes
Pia Pinholt Madsen, Aarhus University, Denmark
18.10-18.25 Usage of a TT5 splice site in Franconi Anemia Kornelia Neveling, University of
Wuerzburg, Germany
18.30 Bus to hotel

Saturday, 9 April
4th Section – The Impact of Splicing Defects in Human Pathology/2
09.00-09.30 Chaperoning snRNP Biogenesis in Health and Disease
Livio Pellizzoni, Dulbecco Telethon Institute at the Institute of Cell Biology – CNR, Rome, Italy
09.35-09.55 Complexity of 5’ splice site complexes
Marco Baralle, ICGEB, Trieste, Italy
10.00-10.20 RNA-binding Proteins in Lung Cancer
Luis M. Montuenga, University of Navarra, Spain
10.25-10.45 Regulation of Alternative Splicing by snoRNAs contributes to Prader-Willy-Syndrome
Stefan Stamm, Institute of Biochemistry, University of Erlangen, Germany)
10.50-11.10 Splicing Factor SF2/ASF Controls Cell Motility and Alternative Splicing of the Ron Proto-oncogene
Giuseppe Biamonti, Institute of Molecular Genetics – CNR, Pavia, Italy
11.15-11.45 Coffee Break ICGEB Foyer, W Building
11.45-12.05 Study of NF1 mutations affecting splicing Conxi Lazaro, CGMM-IRO-IDIBELL,
Barcelona, Spain
12.05-12.25 Multiple anti-HIV-1 stratgies based on U7 snRNA-mediated redirection of splicing and on RNA interference
Maria Asparuhova, University of Bern, Switzerland
12.25-12.45 Blocking SR binding sites by antisense oligonucleotides to indice exon skipping: therapeutic applications for Duchenne Muscular Dystrophy
Annemieke Aartsma-Rus, Leiden University Medical Center, The Netherlands
12.45-13.05 Restoration of the CFTR function by splicing modulation
Malka Nissim-Rafinia, The Hebrew University, Jerusalem, Israel
13.00-15.00 Lunch ICGEB Foyer, W Building
15.00 Bus to hotel



List of participants

Organisers:
BARALLE, Francisco E. Director-General, ICGEB, AREA Science Park, Padriciano 99, I-34012 Trieste, ITALY. Telephone: +39-040-3757337; Fax: +39-040-3757361; E-mail: baralle@icgeb.org
PAGANI, Franco Molecular Pathology Laboratory, ICGEB, AREA Science Park, Padriciano 99, I-34012 Trieste, Italy. Telephone: +39-040-3757312; Fax: +39-040-226555; E-mail: pagani@icgeb.org

Lecturers:
BARALLE, Marco Molecular Pathology Laboratory, ICGEB, AREA Science Park, Padriciano 99, I-34012 Trieste, Italy. Telephone: +39-040-3757316; Fax: +39-040-226555; E-mail: barallem@icgeb.org
BIAMONTI, Giuseppe Istituto di Genetica Biochimica ed Evoluzionistica, CNR, Via Abbiategrasso, 207, I-27100 Pavia, ITALY. Telephone: +39-0382-546322, 546323; Fax: +39-0382-422286; E-mail: biamonti@ipvgbe.pv.cnr.it
BURATTI, Emanuele Molecular Pathology Laboratory, ICGEB, AREA Science Park, Padriciano 99, I-34012 Trieste, Italy. Telephone: +39-040-3757316; Fax: +39-040-226555; E-mail: buratti@icgeb.org
CACERES, Javier F. MRC Human Genetics Unit, Chromosome Biology Section, Western General Hospital, Crewe Road, Edinburgh EH4 2XU, UK. Telephone: +44-131-4678426 (direct line and answer machine), +44-131-3322471 (switchboard) X-2301; Fax: +44-131-4678456; E-mail: javier.caceres@hgu.mrc.ac.uk
CHABOT, Benoit Professeur titulaire et directeur/Professor and Head, Département de microbiologie et d'infectiologie, RNA Group/Groupe ARNm Faculté de médecine, 3001, 12e avenue Nord, Université de Sherbrooke, Sherbrooke, Québec J1H 5N4, CANADA. Telephone: +1-819-5645295; Fax: +1-819-5645392; E-mail: benoit.chabot@usherbrooke.ca
COOPER, Thomas A. S. Donald Greenberg Professor of Pathology, Baylor College of Medicine, One Baylor Plaza, Houston, TX 77030, USA. Telephone: +1-713-7983141; Fax: +1-713-7985838; E-mail: tcooper@bcm.tmc.edu
DÖRK, Thilo Gynecology Research Unit, Hannover Medical School, Hannover, D-30625, Germany. Telephone: +49-511-5326075; Fax: +49-511-5326081; E-mail: doerk.thilo@mh-hannover.de, thilo.doerk.oststadt@klinikum-hannover.de
KORNBLIHTT, Alberto R. Laboratorio de Fisiologia y Biologia Molecular, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria -Pabellon 2 -2° piso, ARGENTINA. Telephone: +54-11-45763386, 45763368; Fax: +54-11-45763321; E-mail: ark@fbmc.fcen.uba.ar
KRAINER, Adrian Cold Spring Harbor Laboratory, Cold Spring Harbor, NY, USA. Telephone: +1-516-3678417; Fax: +1-516-3678453; E-mail: krainer@cshl.org
PELLIZZONI, Livio EMBO Young Investigator, Assistant Telethon Scientist, Dulbecco Telethon Institute at the Institute of Cell Biology (CNR), Campus "Adriano Buzzati-Traverso", Via E. Ramarini 32, I-00016 Monterotondo Scalo (Roma), ITALY. Telephone: +39-06-90091326; Fax: +39-06-90091259; E-mail: livio.pellizzoni@ibc.cnr.it
PROUDFOOT, Nicholas J. Professor of Molecular Biology, Sir William Dunn School of Pathology, University of Oxford, South Parks rd, Oxford OX1 3RE, UK. Telephone: +44-1865-275566; Fax: +44-1865-275556; E-mail: nicholas.proudfoot@pathology.oxford.ac.uk
SMITH, Chris Department of Biochemistry, 80, Tennis Court Road, Old Addenbrookes Site, University of Cambridge, Cambridge CB2 1GA, UK. Telephone: +44-1223-333655 (office), 333665 (lab); Fax: +44-1223-766002; E-mail: cwjs1@mole.bio.cam.ac.uk
VALCÁRCEL, Juan ICREA and Centre de Regulació Genòmica, Passeig Marítim, 37-49, 08003 Barcelona, SPAIN. Telephone: +34-932240956 (office), 932240957 (lab); E-mail: juan.valcarcel@crg.es

Participants:
AARTSMA-RUS, Annemieke Leiden University Medical Center, Department of Human Genetics, Wassenaarseweg 72, 2333 AL Leiden, THE NETHERLANDS. Telephone: +31-71-5276080; Fax: +31-71-5276075; E-mail: a.m.rus@lumc.nl
AKHTAR, Md Kamal National Center of Applied Human Genetics, School of Life Sciences, Jawaharlal Nehru University, New Delhi 110067, INDIA. Telephone: +91-11-26103211; Fax: +91-11-26103211; E-mail: kamal332@yahoo.co.in
AL-BABA, Shadi Royal Manchester Children's Hospital, Clinical Genetics, Hospital Road, M27 4HA Manchester, UK. Telephone: +44-7729884957; Fax: +44-161-7272328; E-mail: shadi.al-baba@cmmc.nhs.uk
AL-SHALCHI, Sahar Abdul Wahab Biotechnology Department, College of Science, Baghdad University, Baghdad, IRAQ. Telephone: +964-1-5564955; E-mail: saharalshalchi_66@hotmail.com
ARINGHIERI, Chiara Department of Biotechnologies and Biosciences, University of Milano-Bicocca, P.zza della Scienza 2, I-20126 Milano, ITALY. Telephone: +39-02-64483348, 64483352; Fax: +39-02-64483569; E-mail: kia13@supereva.it
ASANG, Corinna Universitätsklinikum Düsseldorf, Institute für Virologie, Direktor Prof. Dr. H. Hengel, AG Prof. D. H. Schaal, Universitätsstr. 1, 40225 Düsseldorf, GERMANY. Telephone: +49-211-8112398; Fax: +49-211-8112227; E-mail: asang@uni-duesseldorf.de
ASPARUHOVA, Maria University of Bern, Institute of Cell Biology, Baltzerstrasse 4, Bern 3012, SWITZERLAND. Telephone: +41-31-6314681; Fax: +41-31-6314616; E-mail: maria.asparuhova@izb.unibe.ch
BETINCOVA, Katerina Institute of Inherited Metabolic Disorders, First Faculty of Medicine, Charles University, Prague, Ke Karlovu 2, Praha 2, 128 08, CZECH REPUBLIC. Telephone: +420-224-967668; Fax: +420-224-919392; E-mail: katerina.betincova@lf1.cuni.cz
BHUVANAGIRI, Madhuri School of Lifesciences, J.N.U., New Delhi, INDIA. Telephone: +91-09891210346; Fax: +91-120-2515268; E-mail: madhuribhuvana@yahoo.com
BLILA, Rania Mohamed Hassan Department of Zoology, Faculty of Science, University of Khartoum, P.O. Box 321, Khartoum, SUDAN. Telephone: +249-183-463299, +249-912219502 (mobile); Fax: +249-183-780295; E-mail: raniabaleela@maktoob.com
BRINDISI, Antonia ICGEB, Molecular Pathology Lab., Padriciano 99, I-34012 Trieste, ITALY. Telephone: +39-040-3757316; Fax: +39-040-226555; E-mail: brindisi@icgeb.org
BRUHN, Thomas Institute of Experimental Dermatology, University of Münster, von-Esmarch-Str. 58, 48149 Münster, GERMANY. Telephone: +49-251-8352680, +49-160-8230769 (mobile); Fax: +49-251-8357226; E-mail: tbruhn@uni-muenster.de
CABIANCA, Daphne Istituto di Genetica Molecolare del C.N.R., Via Abbiategrasso 207, I-27100 Pavia, ITALY. Telephone: +39-02-90785452 (Home), +39-0382-546375 (Lab); Fax: +39-0382-422286; E-mail: cabianca@igm.cnr.it
CHEN, Xianhua Laboratory of Genomic Physiology, School of Life Sciences, Fudan University, 220 Handan Road, Shanghai, 200433, CHINA. Telephone: +86-21-65642903; Fax: +86-21-65642903; E-mail: xhchen@fudan.edu.cn
CORCOS, Laurent INSERM U613 / EA948, Faculty of Medicine, 22, Avenue Camille Desmoulins, 29238 Brest Cedex 3, FRANCE. Telephone: +33-2-98018301; Fax: +33-2-98016603; E-mail: laurent.corcos@univ-brest.fr
COSTESSI, Luisa Molecular Pathology Laboratory, ICGEB, AREA Science Park, Padriciano 99, I34012 Trieste, ITALY. Telephone: +39-040-3757312; Fax: +39-040-226555; E-mail: costessi@icgeb.org
DAYANGAÇ, Didem Department of Medical Biology, Faculty of Medicine, Hacettepe University, Hacettepe Children Hospital, Floor 6, Sihhiye 06100, Ankara, TURKEY. Telephone: +90-312-3052541; Fax: +90-312-3096060; E-mail: didayan@hacettepe.edu.tr
DE CONTI, Laura ICGEB, Molecular Pathology Lab., Padriciano 99, I-34012 Trieste, ITALY. Telephone: +39-040-3757312; Fax: +39-040-226555; E-mail: deconti@icgeb.org
DHIR, Ashish Lab No. 332, School of Life Science, Jawaharlal Nehru University, Munirka, New Delhi, INDIA. Telephone: +91-9810967669; Fax: +91-11-23375954; E-mail: adbiotech@rediffmail.com
FELICE, Barbara IFOM, Istituto FIRC di Oncologia Molecolare, Via Adamello 16, I-20139 Milan, ITALY. Telephone: +39-02-574303233, 574303200; Fax: +39-02-574303244, 574303231; E-mail: barbara.felice@ifom-ieo-campus.it
GOINA, Elisa ICGEB, Molecular Pathology Lab., Padriciano 99, I-34012 Trieste, ITALY. Telephone: +39-040-3757312; Fax: +39-040-226555; E-mail: goina@icgeb.org
GRELLSCHEID, Sushma Nagaraja C/o David Elliott, Institute of Human Genetics, International Centre for Life, Central Parkway, Newcastle upon Tyne, NE1 3BZ, UK. Telephone: +44-191-3741319; E-mail: sushma@cantab.net, sn233@cam.ac.uk
KALB, Reinhard University of Wuerzburg, Dept. of Human Genetics, Am Hubland, Biozentrum, B107, 97074 Würzburg, GERMANY. Telephone: +49-93-18884089; Fax: +49-93-18884069; E-mail: r.kalb@biozentrum.uni-wuerzburg.de
KRALOVICOVA, Jana Human Genetics Division, School of Medicine, University of Southampton, MP808, Tremona Rd, Southampton, SO16 6YD, UK. Telephone: +44-2380-796425; Fax: +44-2380-794264; E-mail: jakr@soton.ac.uk
LÁZARO GARCÍA, Concepcion Medical and Molecular Genetics Center (MMGC), Cancer Research Institute (IRO), Hospital Duran i Reynals, Gran Via s/n, Km 2.7, 08907 Hospitalet de Llobregat, Barcelona, SPAIN. Telephone: +34-93-2607471; Fax: +34-93-2607414; E-mail: clazaro@iro.es
LEI, Haixin Department of Molecular Genetic Epidemiology C050, Germany Cancer Research Center (DKFZ), Im Neuenheimer Feld 580, 69120 Heidelberg, GERMANY. Telephone: +49-6221-421806; Fax: +49-6221-421810; E-mail: kahxlei@yahoo.com, h.lei@dkfz-heidelberg.de
MADSEN, Pia Pinholt Aarhus University Hospital, Skejby Sygehus, Research Unit of Molecular Medicine, Brendstrupgaardsvej 100, DK-8200 Aarhus N, DENMARK. Telephone: +4589495142; Fax: +45-89496018; E-mail: pia.pinholt@ki.au.dk
MARCUCCI, Roberto ICGEB, Molecular Pathology Lab., Padriciano 99, I-34012 Trieste, ITALY. Telephone: +39-040-3757312; Fax: +39-040-226555; E-mail: marcucci@icgeb.org
MONTUENGA, Luis M. Professor of Cell Biology, Department of Histology and Pathology, Schools of Medicine and Sciences and Oncology Research Division, Center for Applied Medical Research, University of Navarra, Pamplona-31080, SPAIN. Telephone: +34-948-425600; Fax: +34-948-425649; E-mail: lmontuenga@unav.es
MORETTI, Federico Andrea ICGEB, Molecular Pathology Lab., Padriciano 99, I-34012 Trieste, ITALY. Telephone: +39-040-3757312; Fax: +39-040-226555; E-mail: moretti@icgeb.org
NEVELING, Kornelia University of Wuerzburg, Dept. of Human Genetics, Biozentrum, B107, Am Hubland, 97074 Wuerzburg, GERMANY. Telephone: +49-931-8884089; Fax: +49-931-8884069; E-mail: kornelia.neveling@stud-mail.uni-wuerzburg.de
NISSIM-RAFINIA, Malka Genetic Department, Hebrew University, Givat-Ram Campus, Jerusalem 91904, ISRAEL. Telephone: +972-2-6585122; Fax: +972-2-6584810; E-mail: malkar@cc.huji.ac.il
PINOTTI, Mirko Department of Biochemistry and Molecular Biology, University of Ferrara, Via Fossato di Mortara 74, I-44110 Ferrara, ITALY. Telephone: +39-0532-424424; Fax: +39-0532-424484; E-mail: pnm@unife.it
PIVA, Francesco Istituto di Biologia e Genetica, Università Politecnica delle Marche, Via Brecce Bianche, Monte D'Ago, I-60131 Ancona, ITALY. Telephone: +39-071-2204376; Fax: +39-071-2204609; E-mail: f.piva@univpm.it
PLATONOVA, Natalia Laboratory of Development Genetics of Dr. Giorgio Merlo, Dulbecco Telethon Institute, DTI/CNR/ITB, Via F. Cervi, 93, I-20090 Segrate (Milano), ITALY. Telephone: +39-3391163221; Fax: +39-02-26422660; E-mail: nplatonova2000@mail.ru
RAPONI, Michela Department of Pathology, University of Cambridge, Tennis Court Road, Cambridge, CB2 1QP, UK. Telephone: +44-1223-333460; Fax: +44-1223-333346; E-mail: mr407@cam.ac.uk
RIVOLTA, Carlo Department of Medical Genetics, University of Lausanne, Rue du Bugnon 27, CH-1005 Lausanne, SWITZERLAND. Telephone: +41-21-6925451; Fax: +41-21-6925455; E-mail: carlo.rivolta@unil.ch
RIZZOTTO, Lara Department of Biochemistry and Molecular Biology, University of Ferrara, Via Fossato di Mortara 74, I-44100 Ferrara, ITALY. Telephone: +39-0532-424424; Fax: +39-0532-424484; E-mail: lara_rizz@yahoo.it
SINICI, Incilay Department of Biochemistry, Hacettepe University Faculty of Medicine, Sihhiye, 06100, Ankara, TURKEY. Telephone: +90-532-3764032; Fax: +90-312-3100580; E-mail: isinici@hacettepe.edu.tr, incilaylay@yahoo.com
SOLIER, Stéfanie Unité INSERM 517, Laboratoire Mort Cellulaire et Cancer (Pr. Solary), Faculté de Médecine, 7 boulevard Jeanne d'Arc, 21033 DIJON, FRANCE. Telephone: +33-0380393440; Fax: +33-0380393434; E-mail: ssolier@9online.fr
STAHLBERG, Anders Department of Chemistry and Biosciences - Molecular Biotechnology, Chalmers University of Technology, Lundbergslaboratoriet, Medicinargatan 9E, 413 90 Gothenburg, SWEDEN. Telephone: +46-31-7733916; Fax: +46-31-7733910; E-mail: anders.stalberg@molbiotech.chalmers.se
STAMM, Stefan Institute of Biochemistry, University of Erlangen, Fahrstrasse 17, 91054 Erlangen, GERMANY. Telephone: +49-9-1318524622; Fax: +49-9-1318524605; E-mail: stefan@stamms-lab.net
STELLA, Alessandro Sezione di Genetica Medica-Dimimp, Policlinico-Università di Bari, P.zza G. Cesare 11, I-70124 Bari, ITALY. Telephone: +39-080-5478270; Fax: +39-080-5478269; E-mail: alexst@medgene.uniba.it
SZWAGRZYK, Marzena Anna ICGEB, Molecular Pathology Lab., Padriciano 99, I-34012 Trieste, ITALY. Telephone: +39-040-3757316; Fax: +39-040-226555; E-mail: szwagrzy@icgeb.org
TERRANOVA, Cettina Section of Biology and Genetics, Department of Mother and Child, Biology and Genetics, University of Verona, Strada Le Grazie 8, I-37134 Verona, ITALY. Telephone: +39-045-8027675; Fax: +39-045-8027180; E-mail: cterranova@medicina.univr.it
VILLA, Tommaso Department of Biochemistry and Biophysics, University of California, San Francisco, Mission Bay Campus, Genentech Hall, 600 16th Street, Room N374, Box 2200, San Francisco, CA, 94143-2200 (for standard mail), 94158 (for courier mail), USA. Telephone: +1-415-4764705; Fax: +1-415-5024315; E-mail: villa@itsa.ucsf.edu
VORECHOVSKY, Igor Human Genetics Division, School of Medicine, University of Southampton, MP808, Tremona Rd, Southampton, SO16 6YD, UK. Telephone: +44-2380-796425; Fax: +44-2380-794264; E-mail: igvo@soton.ac.uk, i.vorechovsky@soton.ac.uk
WHITE, Helen Elizabeth National Genetics Reference Laboratory (Wessex), University of Southmpton, Wessex Regional Genetics, Salisbury District Hospital, Salisbury, SP2 8BJ, UK. Telephone: +44-1722-429016; Fax: +44-1722-338095, 331531; E-mail: hew@soton.ac.uk
ZATKOVA, Andrea Department of Human Genetics, Clinical Institute of Medical and Chemical Laboratory Diagnostics (KIMCL), Medical University Vienna (MUW), Währinger Str. 10, 1090 Vienna, AUSTRIA. Telephone: +43-1-4277-60640; Fax: +43-1-4277-9606; E-mail: andrea.zatkova@meduniwien.ac.at

Observers:
BERTOK, Sara Servizio di Genetica Medica, I.R.C.C.S. Burlo Garofolo, Via dell'Istria 65/1, 34137 Trieste, ITALY. Telephone: +39-040-3785424
BREGANT, Elisa Istituto di Genetica del Policlinico universitario di Udine, ITALY.
D'ELIA, Angela Valentina Servizio di Genetica Medica, I.R.C.C.S. Burlo Garofolo, Via dell'Istria 65/1, 34137 Trieste, ITALY. Telephone: +39-040-3785424
FABRIS, Annalisa Servizio di Genetica Medica, I.R.C.C.S. Burlo Garofolo, Via dell'Istria 65/1, 34137 Trieste, ITALY. Telephone: +39-040-3785424
GERIN, Fabio Servizio di Genetica Medica, I.R.C.C.S. Burlo Garofolo, Via dell'Istria 65/1, 34137 Trieste, ITALY. Telephone: +39-040-3785424
GIUNTA, Marina Servizio di Genetica Medica, I.R.C.C.S. Burlo Garofolo, Via dell'Istria 65/1, 34137 Trieste, ITALY. Telephone: +39-040-3785424
HLADNIK, Uros Servizio di Genetica Medica, I.R.C.C.S. Burlo Garofolo, Via dell'Istria 65/1, 34137 Trieste, ITALY. Telephone: +39-040-3785424
LONIGRO, Renata Istituto di Genetica del Policlinico universitario di Udine, ITALY.
MARZILIANO, Nicola Servizio di Genetica Medica, I.R.C.C.S. Burlo Garofolo, Via dell'Istria 65/1, 34137 Trieste, ITALY. Telephone: +39-040-3785424
MAZZONE, Graciela Luján Centro Studi Fegato, AREA Science Park Basovizza, Bldg. Q SS 14 Km 163,5, I-34012 Trieste, ITALY. Telephone: +39-040-3757915; Fax: +39-040-3757832; E-mail: graciela.mazzone@csf.units.it
PASSON, Nadia Istituto di Genetica del Policlinico universitario di Udine, ITALY.
ROCA, Leslye Centro Studi Fegato, AREA Science Park Basovizza, Bldg. Q SS 14 Km 163,5, I-34012 Trieste, ITALY. Telephone: +39-040-3757915; Fax: +39-040-3757832; E-mail: leslye.roca@csf.units.it
VIEL, Alessandra Servizio di Genetica Medica, I.R.C.C.S. Burlo Garofolo, Via dell'Istria 65/1, 34137 Trieste, ITALY. Telephone: +39-040-3785424