NCT04834973

A Trial of Tigilanol Tiglate in Combination With Pembrolizumab in Stage IIIB to IV M1c-melanoma

A Phase Ib/IIa, Dose-escalation Study to Evaluate the Safety, Tolerability, and Preliminary Effectiveness of Intratumoural Tigilanol Tiglate in Combination With Intravenous Pembrolizumab in Adults With Stage IIIb to IV M1c-melanoma

• Status: Terminated
• Phase: Phase 1 / Phase 2
• Study type: Interventional
• Enrollment: 3 (actual)
• Sponsor: QBiotics Group Limited · Industry
• Sex: All
• Age: 18 Years
• Healthy volunteers: Not accepted

Summary

A Phase Ib/IIa, multicentre, open label, dose-escalation study to evaluate the safety, tolerability, and preliminary effectiveness of intratumoural tigilanol tiglate in combination with intravenous pembrolizumab in adult patients with unresectable, Stage IIIB to IV M1c melanoma.

Detailed description

Intratumoural treatment with tigilanol tiglate combined with systemic anti-programmed cell death receptor 1 (PD 1) immunotherapy may enhance anti-tumour immune responses and improve outcomes for patients with melanoma. Primary Objectives: 1\. To determine the maximum tolerated dose (MTD) or maximum feasible dose (MFD) level of a single intratumoural treatment of tigilanol tiglate (Tx1) administered in combination with pembrolizumab. 2\. To assess the safety and tolerability of: i) A single treatment (Tx1) of intratumoural tigilanol tiglate at escalating dose levels (dose-escalation) administered in combination with intravenous (IV) pembrolizumab (200 mg); and ii) Repeat treatments of intratumoural tigilanol tiglate (maximum of 3 treatments) administered in combination with IV pembrolizumab (200 mg, Q3W). Repeat treatment(s) of intratumoural tigilanol tiglate to be administered at the same dose level at Tx1 as follows: 1. If the initially injected tumour(s) are not fully ablated, then intratumoural tigilanol tiglate Tx2 +/- Tx3 may be re-administered to the same tumour(s). 2. If the initially injected tumour(s) are fully ablated and additional pre-identified tumours can be treated, then intratumoural tigilanol tiglate, Tx2 +/- Tx3 may also be administered to those tumours. Note: Tumours identified at Screening that are designated as "not to be injected" tumours (i.e. non-injected tumours for observation) cannot be treated at Tx1, Tx2 or Tx3. Secondary Objectives: 1. To evaluate tumour response according to RECIST 1.1 criteria, including loco-regional control of injected tumour(s) and non-injected tumour(s), and survival in patients treated in this study. 2. To assess the safety and tolerability of ongoing treatment with pembrolizumab up to a total of 35 cycles (Q3W), including the combination with up to 3 treatments of intratumoural tigilanol tiglate (Q3W). Exploratory Objectives: 1\. To evaluate the tumour response of tumours following treatment with intratumoural injection with tigilanol tiglate in combination with pembrolizumab

Conditions

• Melanoma

Interventions

Type	Name	Description
DRUG	tigilanol tiglate	Single or multiple Intratumoural treatment of tigilanol tiglate at escalating doses of 0.6 mg/m2, 1.2 mg/m2 and 2.4 mg/m2. Tigilanol tiglate is a novel, short-chain diterpene ester in early clinical development for local treatment of a wide range of solid tumours.
DRUG	pembrolizumab	Three weekly 200 mg intravenous pembrolizumab treatment. Pembrolizumab is a systemic anti-programmed cell death receptor 1 (PD 1) immunotherapy.

Timeline

• Start date: 2021-05-07
• Primary completion: 2022-07-12
• Completion: 2022-07-12
• First posted: 2021-04-08
• Last updated: 2023-04-18

Locations

2 sites across 1 country: Australia