Dabrafenib and Trametinib in Treating Patients With Erdheim Chester Disease With BRAF V600 Mutations

Erdheim-Chester Disease Clinical Trial

Official title: A Phase II Therapeutic Trial of the Use of Dabrafenib and Trametinib in Patients With BRAF V600 Mutation Positive Lesions in Erdheim Chester Disease

Status Withdrawn

Clinical Trial Summary

This phase II trial studies the side effects and how well dabrafenib and trametinib work in treating patients with Erdheim Chester disease that have BRAF V600 gene mutations. Dabrafenib and trametinib may stop the growth of tumor cells by blocking some of the enzymes needed for cell growth.

Clinical Trial Description

PRIMARY OBJECTIVES:

I. To study the efficacy and safety of dabrafenib mesylate (dabrafenib) and trametinib dimethyl sulfoxide (trametinib) as combination therapy in patients with BRAF V600E positive Erdheim Chester disease.

II. To determine the clinical response rate to dabrafenib and trametinib combination therapy in patients with BRAF V600E positive Erdheim Chester disease.

SECONDARY OBJECTIVES:

I. To determine time response, progression free survival and overall survival. II. To assess disease resistance to this combination therapy.

EXPLORATORY OBJECTIVES:

I. To monitor the degree of histiocytic infiltration-fibrosis progression, stability and regression under combination therapy using fludeoxyglucose F 18 (FDG)-positron emission tomography (PET) scan, magnetic resonance imaging (MRI) scans, computed tomography (CT) scans and technetium (T)-99m bone scans.

II. To monitor serum C-reactive protein (CRP), estrogen receptor (ESR), and cytokine levels as inflammatory markers prior to and during combination therapy.

III. To monitor renal function prior to and during combination therapy in order to assess for functional improvement.

IV. To evaluate the level of functioning, fatigue, motor skills and ability to perform routine daily activities prior to and during therapy in order to assess for improvements in these areas as well as quality of life improvement.

V. To establish duration of treatment-endpoints in patients with BRAF V600E positive Erdheim-Chester disease (ECD) lesions.

OUTLINE:

Patients receive dabrafenib mesylate orally (PO) twice daily (BID) and trametinib dimethyl sulfoxide PO once daily (QD) on days 1-28. Treatment repeats every 28 days for up to 12 cycles in the absence of disease progression or unacceptable toxicity.

After completion of study treatment, patients are followed up for 48 weeks. ;

Related Conditions & MeSH terms

• Erdheim-Chester Disease

• NCT number: NCT03794297
• Study type: Interventional
• Source: National Cancer Institute (NCI)
• Status: Withdrawn
• Phase: Phase 2
• Start date: January 4, 2019
• Completion date: February 18, 2021