{"id":{"repo_id":"the-open-u","oai_identifier":"oai:oro.open.ac.uk:54565"},"canonical_url":"https://search.dev.ndltd.org/etd/the-open-u/oai:oro.open.ac.uk:54565","repository":{"repo_id":"the-open-u","name":"The Open University","base_url":"https://oro.open.ac.uk/cgi/oai2"},"display":{"title":"Family and tumour studies in breast and oesophageal cancer","abstract":"This study focussed on two areas in the field of cancer susceptibility. The initial area was the genetic analysis of a recently mapped breast cancer susceptibility locus, BRCAl, in a number of breast and breast-ovarian cancer families. In the largest of the ICRF families studied (BOV3), linkage to the long arm of chromosome 17 was confirmed and a number of recombinants were identified. One such cross-over event enabled the reduction of the interval harbouring BRCAI to a region estimated to be between 1-1.5 Mh. During the course of this study, a second gene for breast/ovarian cancer predisposition, BRCA2, had been assigned to a 6 cM region at 13q12-13.Towards the identification of this gene, a YAC contig was constructed spanning the published minimal genetic interval for BRCA2. This contig provided a framework for the identification of BRCA2. Allele loss studies were also performed and indicated that BRCA1 acts as a tumour suppressor. Analysis of familial and sporadic infiltrating ductal grade 3 breast carcinomas revealed a pattern of combined loss or retention of BRCAI and BRCA2. This supports a role for both genes in the development of thistumour type. The other area of study was the genetic analysis of a group of autosomal dominant skin diseases, termed the non-epidermolytic palmoplantar keratodermas. This study demonstrated genetic heterogeneity between three forms of NEPPK: diffuse, punctate and focal. Genetic heterogeneity was also established between families presenting with clinically similar forms of focal NEPPK. Mutations in thetype I keratin on 17q12-21, KRT16, were identified as the genetic basis of focal NEPPK in a pedigree without associated susceptibility to oesophageal cancer. In the pedigrees with a striking association between focal NEPPK and oesophageal cancer susceptibility, the region harbouring this disease locus (TOC) was refined to a lcMregion on 17q24-25.","abstract_html":"This study focussed on two areas in the field of cancer susceptibility. The initial area was the genetic analysis of a recently mapped breast cancer susceptibility locus, BRCAl, in a number of breast and breast-ovarian cancer families. In the largest of the ICRF families studied (BOV3), linkage to the long arm of chromosome 17 was confirmed and a number of recombinants were identified. One such cross-over event enabled the reduction of the interval harbouring BRCAI to a region estimated to be between 1-1.5 Mh. During the course of this study, a second gene for breast/ovarian cancer predisposition, BRCA2, had been assigned to a 6 cM region at 13q12-13.Towards the identification of this gene, a YAC contig was constructed spanning the published minimal genetic interval for BRCA2. This contig provided a framework for the identification of BRCA2. Allele loss studies were also performed and indicated that BRCA1 acts as a tumour suppressor. Analysis of familial and sporadic infiltrating ductal grade 3 breast carcinomas revealed a pattern of combined loss or retention of BRCAI and BRCA2. This supports a role for both genes in the development of thistumour type. The other area of study was the genetic analysis of a group of autosomal dominant skin diseases, termed the non-epidermolytic palmoplantar keratodermas. This study demonstrated genetic heterogeneity between three forms of NEPPK: diffuse, punctate and focal. Genetic heterogeneity was also established between families presenting with clinically similar forms of focal NEPPK. Mutations in thetype I keratin on 17q12-21, KRT16, were identified as the genetic basis of focal NEPPK in a pedigree without associated susceptibility to oesophageal cancer. In the pedigrees with a striking association between focal NEPPK and oesophageal cancer susceptibility, the region harbouring this disease locus (TOC) was refined to a lcMregion on 17q24-25.","abstract_has_math":false,"creators":["Kelsell, David Peter"],"institution":"The Open University","degree_name":"phd","degree_level":"doctoral","degree_discipline":null,"degree_department":null,"school":null,"contributors":[],"advisors":[],"committee_chairs":[],"committee_members":[],"year":1997,"date_issued":"1997","date_published":"1997","updated_at":"2026-07-24T05:02:45Z","subjects":[],"languages":["en"],"rights":[],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":null,"outbound_label":null,"outbound_source":null},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:creator","label":"Author","values":["Kelsell, David Peter"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["1997"]},{"key":"dc:date.issued","label":"Date","values":["1997"]},{"key":"dc:publisher.institution","label":"Dc Publisher Institution","values":["The Open University"]},{"key":"dc:relation.isreferencedby","label":"Dc Relation Isreferencedby","values":["https://oro.open.ac.uk/54565/"]},{"key":"dc:type","label":"Dc Type","values":["Thesis"]},{"key":"dc:type.qualificationlevel","label":"Dc Type Qualificationlevel","values":["doctoral"]},{"key":"dc:type.qualificationname","label":"Dc Type Qualificationname","values":["phd"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["en"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier.uri","label":"Identifier URI","values":["https://oro.open.ac.uk/54565/1/321290.pdf"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["This study focussed on two areas in the field of cancer susceptibility. The initial area was the genetic analysis of a recently mapped breast cancer susceptibility locus, BRCAl, in a number of breast and breast-ovarian cancer families. In the largest of the ICRF families studied (BOV3), linkage to the long arm of chromosome 17 was confirmed and a number of recombinants were identified. One such cross-over event enabled the reduction of the interval harbouring BRCAI to a region estimated to be between 1-1.5 Mh. During the course of this study, a second gene for breast/ovarian cancer predisposition, BRCA2, had been assigned to a 6 cM region at 13q12-13.Towards the identification of this gene, a YAC contig was constructed spanning the published minimal genetic interval for BRCA2. This contig provided a framework for the identification of BRCA2. Allele loss studies were also performed and indicated that BRCA1 acts as a tumour suppressor. Analysis of familial and sporadic infiltrating ductal grade 3 breast carcinomas revealed a pattern of combined loss or retention of BRCAI and BRCA2. This supports a role for both genes in the development of thistumour type. The other area of study was the genetic analysis of a group of autosomal dominant skin diseases, termed the non-epidermolytic palmoplantar keratodermas. This study demonstrated genetic heterogeneity between three forms of NEPPK: diffuse, punctate and focal. Genetic heterogeneity was also established between families presenting with clinically similar forms of focal NEPPK. Mutations in thetype I keratin on 17q12-21, KRT16, were identified as the genetic basis of focal NEPPK in a pedigree without associated susceptibility to oesophageal cancer. In the pedigrees with a striking association between focal NEPPK and oesophageal cancer susceptibility, the region harbouring this disease locus (TOC) was refined to a lcMregion on 17q24-25."]},{"key":"dc:format","label":"Dc Format","values":["application/pdf"]},{"key":"dc:title","label":"Title","values":["Family and tumour studies in breast and oesophageal cancer"]}]}],"canonical_facts":{"dc:creator":["Kelsell, David Peter"],"dc:date":["1997"],"dc:date.issued":["1997"],"dc:description.abstract":["This study focussed on two areas in the field of cancer susceptibility. The initial area was the genetic analysis of a recently mapped breast cancer susceptibility locus, BRCAl, in a number of breast and breast-ovarian cancer families. In the largest of the ICRF families studied (BOV3), linkage to the long arm of chromosome 17 was confirmed and a number of recombinants were identified. One such cross-over event enabled the reduction of the interval harbouring BRCAI to a region estimated to be between 1-1.5 Mh. During the course of this study, a second gene for breast/ovarian cancer predisposition, BRCA2, had been assigned to a 6 cM region at 13q12-13.Towards the identification of this gene, a YAC contig was constructed spanning the published minimal genetic interval for BRCA2. This contig provided a framework for the identification of BRCA2. Allele loss studies were also performed and indicated that BRCA1 acts as a tumour suppressor. Analysis of familial and sporadic infiltrating ductal grade 3 breast carcinomas revealed a pattern of combined loss or retention of BRCAI and BRCA2. This supports a role for both genes in the development of thistumour type. The other area of study was the genetic analysis of a group of autosomal dominant skin diseases, termed the non-epidermolytic palmoplantar keratodermas. This study demonstrated genetic heterogeneity between three forms of NEPPK: diffuse, punctate and focal. Genetic heterogeneity was also established between families presenting with clinically similar forms of focal NEPPK. Mutations in thetype I keratin on 17q12-21, KRT16, were identified as the genetic basis of focal NEPPK in a pedigree without associated susceptibility to oesophageal cancer. In the pedigrees with a striking association between focal NEPPK and oesophageal cancer susceptibility, the region harbouring this disease locus (TOC) was refined to a lcMregion on 17q24-25."],"dc:format":["application/pdf"],"dc:identifier.uri":["https://oro.open.ac.uk/54565/1/321290.pdf"],"dc:language":["en"],"dc:publisher.institution":["The Open University"],"dc:relation.isreferencedby":["https://oro.open.ac.uk/54565/"],"dc:title":["Family and tumour studies in breast and oesophageal cancer"],"dc:type":["Thesis"],"dc:type.qualificationlevel":["doctoral"],"dc:type.qualificationname":["phd"]},"updated_at":"2026-07-24T05:02:45Z"}