Neoplasms

All Conditions

Urinary Tract, Sexual Organs, and Pregnancy Conditions

Carcinoma

Urinary Bladder Neoplasms

Neoplasms, Glandular and Epithelial

Neoplasms by Histologic Type

Urologic Neoplasms

Urogenital Neoplasms

Urogenital Diseases

Female Urogenital Diseases

Pregnancy Complications

Female Urogenital Diseases and Pregnancy Complications

Urinary Bladder Diseases

Urologic Diseases

Male Urogenital Diseases

Antineoplastic Agents

All Drugs and Chemicals

Amino Acids

Lapatinib

Tyrosine Kinase Inhibitors

Protein Kinase Inhibitors

Enzyme Inhibitors

Tyrosine

Lapatinib, 1250 mg per day, per os, during 3 weeks +/- 5 days.

LAPATINIB

Geneviève CHENE, Pr

Modification of the EGF signalling pathway and / or HER 2, by Lapatinib in bladder cancer.

Patients with invasive bladder tumor , candidates for radical cystectomy. Patients will receive Lapatinib during 3 weeks +/- 5 days, before cystectomy. A comparison of tissue from the original biopsy and cystectomy after Lapatinib will allow this to occur.

TREATMENT AND STRATEGY Lapatinib in bladder carcinoma -Overall there are arguments for considering that egf pathway is involved in bladder carcinoma and so far that drugs inhibiting EGF pathway could have an impact for therapeutical endpoints.

Nevertheless it is unclear that from previous studies that adding egf inhibiting drug to chemotherapy is clinically relevant, essentially by difficulties to measure a beneficial endpoint while downstream EGF pathways have been modified by these drugs, as shown with lapatinib (see 2.1.5).

Furthermore, there is no argument for initial selection of patients based on the initial egfr and/or her 2 tumor profile, asking for more intense knowledge.

LAPATINIB TREATMENT Patients will receive lapatinib therapy at a daily standard dose of 1500 mg.

LAPATINIB TREATMENT DURATION Patients will then receive 3 weeks of lapatinib therapy + possible 5 days. As the study is a non direct benefit study, the exposition to the drug is proposed during the standard window of 3 to 4 weeks to organize a radical cystectomy in patients with muscle invasive bladder carcinoma. In this study patients, the standard procedure is not delayed for the purpose of the study.

The duration of exposition to lapatinib as to be long enough to have a continuous impact of biological events to induce indeed inhibition of EGF pathway but also to impact on more complex or more distal events as apoptosis and so to be able to measure it. This justifies a 3 weeks of treatment + possible up to 5 days more due to surgical organization procedures.

Surgery will take place on the last day of treatment, which is recommended due to the half-life of lapatinib. Nevertheless for surgical purpose, the drug could be not given on the day of surgery.

A Phase 0 of Neoadjuvant Lapatinib in Infiltrative Bladder Carcinoma Before Cystectomy

Pilot Study of Lapatinib (Tyverb®) in Neoadjuvant Treatment for Patients With Locally Bladder Carcinoma Before Cystectomy

The primary objective of the study is to evaluate the effect at a molecular level, of 3 weeks of neoadjuvant lapatinib, in locally advanced muscle-invasive transitional cell carcinoma of the bladder. A comparison of tissue from the original biopsy and cystectomy after lapatinib will allow this to occur. This effect will be evaluated by studying proliferation and apoptotic markers as well as the phosphorylation of proteins which are components of the egf signalling pathway.

Because the availability of large scale data, the correlation between lapatinib biological response and the molecular alteration of other molecules beside those involved in the egf pathway will be explored. i.e. key molecules of the pathway will also be studied at the protein level (EGFR, ERBB2, AKT ERK) as well as their phosphorylation status.

To evaluate the histological response to lapatinib at the time of surgery

University Hospital, Bordeaux

Spots Global Cancer Trial Database for infiltrative bladder carcinoma