LAPATINIB - KEZELÉSI LEHETŐSÉG TRASTUZUMAB-REZISZTENS EMLŐRÁKBAN

作者: Béla Pikó

DOI: 10.1556/MONKOL.53.2009.4.6

关键词: Epidermal growth factor receptorLapatinibInternal medicineMetastatic breast cancerTrastuzumabMedicineTyrosine-kinase inhibitorOncologyBreast cancerCancerCapecitabine

摘要: Az emlőrakok mintegy negyedeben tapasztalhato HER2-pozitivitas (sejtfelszini receptorok felszaporodasa) nemcsak a sejtosztodast elősegitő tenyező, hanem terapias celpont is egyben. A kezeles első lehetősege receptorra extracellularisan hato monoklonalis antitest, trastuzumab volt. sejten belul, tirozinkinaz enzim gatlasaval mind HER2-, az EGFR altal kozvetitett jelet blokkolo lapatinib ma egyetlen torzskonyvezett szer trastuzumab-kezeles soran progredialo betegek kezelesere. torzskonyvezes alapjaul szolgalo klinikai vizsgalatban capecitabinnal kombinalva median progressziomentes tulelest 4,1 honaprol 8,4 honapra, teljes 15,3 15,6 honapra emelte capecitabinmonoterapiaval szemben trastuzumab-rezisztens emlőrakos betegekben. Tovabbi előny, hogy – kis molekula leven ver-agy gaton athatolva kozponti idegrendszeri att etekhez eljutva kedvezően befolyasolja azok korlefolyasat. Mellekhatasai (trastuzumabnal joval ritkabb) szivizom-karosodas, QT-intervallum meghosszabbodasa, hasmenes, pulmonalis beszűrődes es jellegzetes bőrtunet (rash). tunetek adasanak felfuggesztesevel vagy befejezesevel altalaban megszűnnek, maradando karosodas ritka. torzskonyv szerint kombinalva, előrehaladott etes HER2-pozitiv kezelesere alkalmazhato, antraciklin, taxan metasztatikus betegsegben adott utani progresszioban. alkalmazasa jelenleg egyedi meltanyossagi eljaras kereteben kervenyezhető; remenyeink jovőben fi nanszirozasi forma egyszerűbbe valik. Magyar Onkologia 53:369–375, 2009 Kulcsszavak: tirozinkinaz-gatlas, emlőrak, HER2-pozitivitas, trastuzumab-rezisztencia HER2 overexpressed in 20–25% of breast cancers and associated with an aggressive phenotype poor prognosis. Lapatinib dual tyrosine kinase inhibitor selective for inhibition epidermal growth factor receptor (EGFR1/ErbB1) HER2/ErbB2. Having more targets, probably its antitumor activity could be effi cient. Preclinical data reveal that has trastuzumab-resistant cell lines as well synergistic trastuzumab. Phase I clinical trials have also shown tolerated, mild diarrhea skin rush common toxic eff ects low incidence cardiotoxicity. can cross the blood-brain barrier might therefore role preventing central-nervous-system progression. In pivotal phase III trial, combination capecitabine almost doubled time to disease progression when compared alone (8.4 vs. 4.1 months) women HER2/ErbB2-positive advanced or metastatic cancer previously treated anthracyclin, taxanes The overall survival was 15.6 15.4 months. Several explore cacy conventional chemotherapeutic agents, hormone therapy other target therapies are ongoing neoadjuvant adjuvant sett ings. Piko B. treatment-option cancer. Hungarian Oncology

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