Skip to content

Study of Efficacy and Safety of LXH254 Combinations in Patients With Previously Treated Unresectable or Metastatic Melanoma

A Randomized, Open-label, Multi-arm, Two-part, Phase II Study to Assess Efficacy and Safety of Multiple LXH254 Combinations in Patients With Previously Treated Unresectable or Metastatic BRAFV600 or NRAS Mutant Melanoma

Status
Active, not recruiting
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT04417621
Enrollment
134
Registered
2020-06-04
Start date
2020-10-30
Completion date
2027-02-02
Last updated
2026-03-12

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Melanoma

Keywords

LXH254, Melanoma, NRAS, BRAF, LTT462, Trametinib, Ribocliclib

Brief summary

The primary purpose of this study is to evaluate the efficacy of LXH254 combinations in previously treated unresectable or metastatic melanoma

Interventions

DRUGLXH254

LXH254 will be supplied as tablet for oral use.

DRUGLTT462

LTT462 will be supplied as hard gelatin capsule for oral use.

DRUGTrametinib

Trametinib will be supplied as film-coated tablet for oral use

DRUGRibociclib

Ribociclib will be supplied in tablets and hard gelatin capsules.

Sponsors

Novartis Pharmaceuticals
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
12 Years to 120 Years
Healthy volunteers
No

Inclusion criteria

Male or female must be ≥ 12 years For adolescents only (12-17 years): body weight \> 40kg Histologically confirmed unresectable or metastatic cutaneous melanoma Previously treated for unresectable or metastatic melanoma: * Participants with NRAS mutation: * Participants must have received prior systemic therapy for unresectable or metastatic melanoma with checkpoint inhibitors (CPI), either an anti-PD-1/PD-L1 as a single agent or in combination with anti-CTLA-4, investigational agents, chemotherapy or locally directed anti-neoplastic agents. * A maximum of two prior lines of systemic CPI-containing immunotherapy for unresectable or metastatic melanoma are allowed. Additional agents administered with CPI are permitted. * To rule out pseudo-progression, participants must have documented confirmed progressive disease as per RECIST v1.1 while on/after treatment with checkpoint inhibitor therapy. Confirmation is not required for patients who remained on treatment for \>6 months. * Participants with BRAFV600 mutant disease: * Participants must have received prior systemic therapy for unresectable or metastatic melanoma with checkpoint inhibitors (CPI), either an anti-PD-1/PD-L1 as a single agent or in combination with anti-CTLA-4, investigational agents, chemotherapy or locally directed anti-neoplastic agents. Additionally, participants must have received targeted therapy with a RAFi as a single agent or in combination with a MEKi (+/- CPI allowed) as the last prior therapy. * A maximum of two prior lines of systemic CPI-containing immunotherapy for unresectable or metastatic melanoma are allowed. Additional agents with CPI are permitted. * A maximum of one line of targeted therapy is allowed, and it must be the most recent line of therapy. * Participants must have documented progressive disease as per RECIST v1.1 while on/after treatment with targeted therapy. Other protocol-defined inclusion criteria may apply.

Exclusion criteria

Treatment with any of the following anti-cancer therapies prior to the first dose of study treatment within the stated timeframes: * ≤ 4 weeks for radiation therapy or ≤ 2 weeks for limited field radiation for palliation prior to the first dose of study treatment. * ≤ 2 weeks for small molecule therapeutics. * ≤ 4 weeks for any immunotherapy treatment including immune checkpoint inhibitors. * ≤ 4 weeks for chemotherapy agents, locally directed anti-neoplastic agents, or other investigational agents. * ≤ 6 weeks for cytotoxic agents with major delayed toxicities, such as nitrosourea and mitomycin c. Participants participating in additional parallel investigational drug or medical device studies. All primary central nervous system (CNS) tumors or symptomatic CNS metastases that are neurologically unstable History or current evidence of retinal vein occlusion (RVO) or current risk factors for RVO (e.g. uncontrolled glaucoma or ocular hypertension, history of hyperviscosity or hypercoagulability syndromes). Any medical condition that would, in the investigator's judgment, prevent the patient's participation in the clinical study due to safety concerns or compliance with clinical study procedures. Other protocol-defined

Design outcomes

Primary

MeasureTime frameDescription
Overall Response Rate35 monthsConfirmed ORR using RECIST v1.1, per local assessment

Secondary

MeasureTime frameDescription
Duration of Reposnse (DOR)4 yearsLocal and central assessment
Progression Free Survival (PFS)4 years
Disease Control Rate (DCR)3 yearsUsing RECIST v1.1, per local and central assessment
Overall Survival (OS)4 years
Derived PK parameter (Cmax) for LXH254 & LTT462Up to 5 months
Derived PK parameter (Cmax) for LXH254 & trametinibUp to 5 months
Derived PK parameter (Cmax) for LXH254 & ribociclibUp to 5 months
Derived PK parameter (AUC) for LXH254 & LTT462Up to 5 months
Derived PK parameter (AUC) for LXH254 & trametinibUp to 5 months
Derived PK parameter (AUC) for LXH254 & ribociclibUp to 5 months
Incidence of adverse events (AEs) and serious adverse events (SAEs)35 monthsNumber of participants with Adverse Events (AEs) and SAEs as a measure of safety and tolerability
Dose Interruptions35 monthsTolerability measured by the number of subjects who have interruptions of study treatment and reason for interruptions
Dose reductions35 monthsTolerability measured by the number of subjects who have reductions of study treatment and reason for reductions

Countries

Argentina, Australia, Belgium, France, Germany, Israel, Italy, Netherlands, Norway, Switzerland, United Kingdom, United States

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Mar 13, 2026