Clinical Trial: Icotinib Study for Patients With Neurofibromatosis Type 2 (NF2) and NF2-Related Tumors

Study Status: Recruiting
Recruit Status: Recruiting
Study Type: Interventional

Official Title: Icotinib Hydrochloride Tablets Study for Patients With Neurofibromatosis Type 2 (NF2) and NF2-Related Tumors

Brief Summary: 1)Preliminarily evaluate the treatment effect of Icotinib Hydrochloride Tablets on NF2; 2)Preliminarily evaluate the safety and the patient's tolerance of the treatment of Icotinib; 3)Provide an objective basis for an enlarged randomized double-blind trial.

Detailed Summary:

Neurofibromatosis type 2 (NF2) is a hereditary tumor predisposition syndrome caused by mutations in the NF2 tumor suppressor gene. Individuals with NF2 have a higher likelihood to develop multiple nervous system tumors, including schwannomas, meningiomas, and ependymomas. The hallmark of NF2 is bilateral vestibular schwannomas. Historically, most NF2 patients experience complete hearing loss either from tumor progression or after treatment of the tumors with surgery or radiation. Effective treatments are urgently needed for NF2 patients with progressive hearing loss because hearing loss is associated with impairment in social, emotional,and communication function and with increased depression.

Previous studies of NF2 patients treated with Erlotinib suggested that inhibition of epidermal growth factor receptor (EGFR) could result in hearing improvement and reduction in tumor size.

Much evidence implicates human epidermal growth factor (HER) receptors in vestibular schwannoma growth.Some studies have demonstrated that Merlin, the NF2 gene protein product, controls surface availability of the EGFR, ErbB2, and ErbB3 receptors in human and Drosophila models. Besides, cell culture models of mouse embryo fibroblasts (MEFs) support the role of EGFR in NF2-associated tumorigenesis. Nf2-deficient cells in culture lack contact-dependent inhibition of growth and continue to grow in confluent cultures. This effect appears to be mediated by EGFR signaling. Treatment of Nf2-deficient cells with EGFR inhibitors such as gefitinib can restore contact-dependent inhibition, suggesting that this class of drugs might be useful for NF2 patients with progressive vestibular schwannomas. In this way, Icotinib can inhibit the nutrition of the tumor and decrease the tumor's growth and metastasis. Based on these studies, we perform this clinical trial
Sponsor: Li Peng

Current Primary Outcome: Change from Baseline in volume of tumour after every course of the treatment [ Time Frame: Baseline,Month 3,Month 6,Month 9,Month 12 ]

Patients in this clinical trial would receive MRI test to evaluate the volume of tumour after every course of the treatment.


Original Primary Outcome: Same as current

Current Secondary Outcome: Change from Baseline in hearing ability after every course of the treatment [ Time Frame: Baseline,Month 3,Month 6,Month 9,Month 12 ]

Patients' hearing ability would be tested after every course of the treatment.


Original Secondary Outcome: Same as current

Information By: Beijing Tiantan Hospital

Dates:
Date Received: October 13, 2016
Date Started: July 2016
Date Completion: June 2018
Last Updated: February 7, 2017
Last Verified: February 2017