title: Differentially Expressed Genes in EEC and LMS Syndromes.
abstract: OBJECTIVE
  Ectrodactyly ectodermal dysplasia cleft lip/palate (EEC) syndrome and limb-mammary syndrome (LMS) share a similar phenotype and the same pathogenic gene, which complicates the ability to distinguish between these diagnoses. The current study aims to identify a potential and practical clinical biomarker to distinguish EEC from LMS.
  
  
  METHODS
  Two EEC pedigrees and one LMS pedigree that have been previously reported were reanalyzed. After confirmation of the causative mutations for these new patients, whole-genome expression microarray analysis was performed to assess the molecular genetic changes in these families.
  
  
  RESULTS
  Five new patients with classic symptoms were reported, and these individuals exhibited the same mutation as their relatives (c.812 G>C; c.611G>A; and c.680G>A). According to the whole genome expression results, the EEC patients exhibited different gene expression characteristics compared with the LMS patients. More than 5,000 genes were differentially expressed (changes >2 or <0.5-fold) among the EEC patients, LMS patients and healthy individuals. The top three altered pathways have been implicated in apoptosis, the hematopoietic cell lineage and the Toll-like receptor signaling pathway.
  
  
  CONCLUSIONS
  Our results provide additional clinical and molecular information regarding EEC and LMS and suggest that peripheral blood cytokines may represent a promising clinical biomarker for the diagnosis of these syndromes.
authors.affiliation: Key Laboratory of Oral Biomedical Engineering of the Ministry of Education, Hospital and School of Stomatology, Wuhan University, Wuhan, Hubei, China; Department of Endodontics & Periodontics, College of Stomatology, Dalian Medical University, Dalian, Liaoning, China.
authors.forename: Wei
authors.initials: W
authors.lastname: Yin
authors.affiliation: Key Laboratory of Oral Biomedical Engineering of the Ministry of Education, Hospital and School of Stomatology, Wuhan University, Wuhan, Hubei, China.
authors.forename: Yaling
authors.initials: Y
authors.lastname: Song
authors.affiliation: School of Stomatology, Wuhan University, Wuhan, Hubei, China.
authors.forename: Yangge
authors.initials: Y
authors.lastname: Du
authors.affiliation: Key Laboratory of Oral Biomedical Engineering of the Ministry of Education, Hospital and School of Stomatology, Wuhan University, Wuhan, Hubei, China.
authors.forename: Zhuan
authors.initials: Z
authors.lastname: Bian
mesh_terms: D000328:Adult; D001940:Breast / Q000002:abnormalities*; D002874:Chromosome Mapping; D002971:Cleft Lip / Q000235:genetics*; D002972:Cleft Palate / Q000235:genetics*; D016000:Cluster Analysis; D004476:Ectodermal Dysplasia / Q000235:genetics*; D005260:Female; D020869:Gene Expression Profiling; D005786:Gene Expression Regulation; D056726:Genetic Association Studies; D006801:Humans; D017880:Limb Deformities, Congenital / Q000235:genetics*; D008297:Male; D009154:Mutation; D010375:Pedigree