PMID- 12910109 OWN - NLM STAT- MEDLINE DCOM- 20031209 LR - 20181130 IS - 0761-8425 (Print) IS - 0761-8425 (Linking) VI - 20 IP - 3 Pt 1 DP - 2003 Jun TI - [EGF-R expression correlation between biopsy and surgical specimens of lung carcinoma]. PG - 347-53 AB - INTRODUCTION: Most of the time, biological parameters are evaluated on tissues obtained on surgical samples of the primary tumour. New approaches in non small cell lung cancer (NSCLC) treatment consist to administer neoadjuvant chemotherapy or anti-EGF-R (epidermal growth factor receptor) drug. METHODS: We assessed the expression of EGF-R by immunohistochemistry on biopsy samples and on the paired resected tumours in 27 patients. RESULTS: The mean percentage of EGF-R positive neoplastic cells was 11% in surgical specimens compared to 28% in biopsy specimens (p=0.02) although a good correlation (R=0.67; p=0.0001) between biopsies and surgical specimens was observed. Furthermore, the positivity (cut-off > 1% cells) rate was not statistically different between biopsies (55%) and tumours (48%) (p=0.63). In term of positivity rate, we found 85% concordant results between biopsies and resected tumours, 4% false negative and 11% false positive on biopsies in comparison with the resected tumours. The positive and negative predictive value of the biopsies were respectively 80% and 92%. CONCLUSIONS: The evaluation of EGF-R by immunohistochemistry on biopsies may provide reliable information about non small cell lung cancer EGF-R status. FAU - Meert, A-P AU - Meert AP AD - FNRS (Fonds National de la Recherche Scientifique), Institut Jules Boerdet, Bruxelles, Belgique. ap.meert@bordet.be FAU - Martin, B AU - Martin B FAU - Verdebout, J-M AU - Verdebout JM FAU - Paesmans, M AU - Paesmans M FAU - Lothaire, P AU - Lothaire P FAU - Bosschaerts, T AU - Bosschaerts T FAU - Ninane, V AU - Ninane V FAU - Sculier, J-P AU - Sculier JP LA - fre PT - Journal Article PT - Research Support, Non-U.S. Gov't TT - Correlation entre l'expression d'EGF-R dans les biopsies et les pieces chirurgicales des cancers bronchiques. PL - France TA - Rev Mal Respir JT - Revue des maladies respiratoires JID - 8408032 RN - EC 2.7.10.1 (ErbB Receptors) SB - IM CIN - Rev Mal Respir. 2003 Jun;20(3 Pt 1):315-7. PMID: 12910102 MH - Adenocarcinoma/metabolism/*pathology/surgery MH - Adult MH - Aged MH - Biopsy MH - Carcinoma, Squamous Cell/metabolism/*pathology/surgery MH - ErbB Receptors/*metabolism MH - Female MH - Humans MH - Immunohistochemistry MH - Lung Neoplasms/metabolism/*pathology/surgery MH - Male MH - Middle Aged MH - Predictive Value of Tests MH - ROC Curve MH - Sensitivity and Specificity EDAT- 2003/08/12 05:00 MHDA- 2003/12/11 05:00 CRDT- 2003/08/12 05:00 PHST- 2003/08/12 05:00 [pubmed] PHST- 2003/12/11 05:00 [medline] PHST- 2003/08/12 05:00 [entrez] AID - MDOI-RMR-06-2003-20-3-0761-8425-101019-ART10 [pii] PST - ppublish SO - Rev Mal Respir. 2003 Jun;20(3 Pt 1):347-53.