A Phase I Study of Oral LGX818 in Adult Patients With Advanced or Metastatic BRAF Mutant Melanoma

Browse trials for

• Melanoma 3,006

Keywords

• BRAF mutant,
• BRAF mutated,
• melanoma,
• metastatic,
• advanced,
• RAF kinase inhibitor
• BRAF V600 mutation

Melanoma

3,006 studies on the registry are indexed under Melanoma; 520 are open to participants now.

This study's enrollment of 107 is above the median of 38 across 2,351 interventional studies indexed under Melanoma.

Lead sponsor

Pfizer is the lead sponsor of 3,244 studies on the registry; 139 are open to participants now.

Of its 582 completed or terminated interventional studies of FDA-regulated products, 381 (65%) have results posted.

Study arms

• Experimental
  LGX818 - Dose escalation

  Drug: LGX818

• Experimental
  LGX818 - Dose Expansion at MTD or RP2D

  Drug: LGX818

Interventions

• DrugLGX818

Primary outcomes

1. Number of Participants With Dose-Limiting Toxicity (DLT) During Dose Escalation Phase

   DLT= Adverse event (AE) or abnormal laboratory value assessed as unrelated to disease, disease progression, inter-current illness, or concomitant medications that occurred within first 28 days of treatment with encorafenib and met any of following criteria: \>=grade (G)3 neutropenia or thrombocytopenia for \>7 days; G4 thrombocytopenia; febrile neutropenia; \>=G3 serum creatinine, blood bilirubin; alanine aminotransferase (ALT) or aspartate aminotransferase (AST) and lipase and/or serum amylase (\>=G3 for \> 7 consecutive days or G4); \>=G3 ALT or AST and \>=G2 blood bilirubin; \>=G3 persistent hypertension with more than one drug or more intensive therapy or cardiac disorders or AE excluding on-target side-effect that is manageable; G3 fatigue/asthenia for \>7 consecutive days; \>= G3 vomiting or nausea or diarrhea lasting more than 48 hours despite treatment; \>=G3 pancreatitis, rash/photosensitivity (G3 for \> 7 consecutive days despite skin toxicity treatment or G4); G3 or G4 eye disorders.

   Time frame: Up to 28 days

2. Number of Participants With DLT During Dose Expansion Phase

   DLT= Adverse event (AE) or abnormal laboratory value assessed as unrelated to disease, disease progression, inter-current illness, or concomitant medications that occurred within first 28 days of treatment with encorafenib and met any of following criteria: \>=grade (G)3 neutropenia or thrombocytopenia for \>7 days; G4 thrombocytopenia; febrile neutropenia; \>=G3 serum creatinine, blood bilirubin; alanine aminotransferase (ALT) or aspartate aminotransferase (AST) and lipase and/or serum amylase (\>=G3 for \> 7 consecutive days or G4); \>=G3 ALT or AST and \>=G2 blood bilirubin; \>=G3 persistent hypertension with more than one drug or more intensive therapy or cardiac disorders or AE excluding on-target side-effect that is manageable; G3 fatigue/asthenia for \>7 consecutive days; \>= G3 vomiting or nausea or diarrhea lasting more than 48 hours despite treatment; \>=G3 pancreatitis, rash/photosensitivity (G3 for \> 7 consecutive days despite skin toxicity treatment or G4); G3 or G4 eye disorders.

   Time frame: Up to 28 days

Secondary outcomes

1. Number of Participants With Adverse Events (AEs) and Serious AEs (SAEs) During Dose Escalation Phase

   An AE was defined as the appearance of (or worsening of any pre-existing) undesirable signs, symptoms, or medical conditions. An SAE was defined as one of the following: fatal or life-threatening; resulted in significant disability/incapacity; congenital anomaly/birth defect; was medically significant; required inpatient hospitalization or prolongation of existing hospitalization unless for routine treatment, elective or pre-planned treatment for a pre-existing condition, treatment on an emergency outpatient basis, social reasons and respite care in the absence of any deterioration in the participants general condition, any SAEs that were expected due to the condition being treated.

   Time frame: From start of study treatment until 30 days after last dose of study treatment (maximum of 556.1 weeks of treatment exposure)

2. Number of Participants With AEs and SAEs During Dose Expansion Phase

   An AE was defined as the appearance of (or worsening of any pre-existing) undesirable signs, symptoms, or medical conditions. An SAE was defined as one of the following: fatal or life-threatening; resulted in significant disability/incapacity; congenital anomaly/birth defect; was medically significant; required inpatient hospitalization or prolongation of existing hospitalization unless for routine treatment, elective or pre-planned treatment for a pre-existing condition, treatment on an emergency outpatient basis, social reasons and respite care in the absence of any deterioration in the participants general condition, any SAEs that were expected due to the condition being treated.

   Time frame: From start of study treatment until 30 days after last dose of study treatment (maximum of 257.3 weeks and 114.6 weeks of treatment exposure for melanoma participants and mCRC participants respectively)

3. Progression Free Survival (PFS): Dose Escalation Phase

   PFS was defined as time from date of first study treatment intake to date of first documented disease progression (PD) or death due to any cause. If a participant did not have an event, data censoring was done at the date of last adequate tumor assessment. PD was defined for target disease as at least a 20% increase in sum of longest diameters of all measured target lesions, taking as reference smallest sum on study (this included baseline sum if that was smallest on study), sum also demonstrated absolute increase of greater than or equal to (\>=) 5 mm, or appearance of \>=1 new lesions. For non-target disease: PD was defined as unequivocal progression of pre-existing lesions and if overall tumor burden increased sufficiently to merit discontinuation of therapy; appearance of any new unequivocal malignant lesion was also considered PD. Analysis was performed using Kaplan-Meier method.

   Time frame: From start of study treatment until first documentation of PD or death due to any cause or censoring date (maximum of 556.1 weeks of treatment exposure)

4. PFS: Dose Expansion Phase

   PFS was defined as time from date of first study treatment intake to date of first documented PD or death due to any cause. If a participant did not have an event, data censoring was done at the date of last adequate tumor assessment. PD was defined for target disease as at least a 20% increase in sum of longest diameters of all measured target lesions, taking as reference smallest sum on study (this included baseline sum if that was smallest on study), sum also demonstrated absolute increase of \>= 5 mm, or appearance of \>=1 new lesions. For non-target disease: PD was defined as unequivocal progression of pre-existing lesions and if overall tumor burden increased sufficiently to merit discontinuation of therapy; appearance of any new unequivocal malignant lesion was also considered PD. Analysis was performed using Kaplan-Meier method.

   Time frame: From start of study treatment until first documentation of PD or death due to any cause or censoring date (maximum of 257.3 weeks and 114.6 weeks of treatment exposure for melanoma participants and mCRC participants respectively)

5. Duration of Response (DOR): Dose Escalation Phase

   DOR was defined as the time from first observation of response CR or partial response \[PR\]) to the first time of progression or death. CR was defined as complete disappearance of all target and non-target lesions, and sustained for at least 4 weeks apart before progression. Any pathological lymph nodes (whether target or non-target) must have reduction in short axis to less than (\<) 10 millimeter (mm). PR defined as at least 30 percent (%) decrease in sum of diameters of target lesions, taking as reference the baseline sum diameters. For target disease, PD=at least a 20% increase in sum of longest diameters of all measured target lesions, taking as reference smallest sum on study, sum also demonstrated absolute increase of \>= 5 mm, or appearance of \>=1 new lesions. For non-target disease: PD=unequivocal progression of pre-existing lesions and if overall tumor burden increased sufficiently to merit discontinuation of therapy; appearance of any new unequivocal malignant lesion.

   Time frame: From first observation of response until first time of PD or death due to any cause (Maximum of 556.1 weeks of treatment exposure)

6. Time to Response (TTR): Dose Escalation Phase

   TTR was defined as the time from date of treatment until first documented response (CR or PR). CR was defined as complete disappearance of all target and non-target lesions sustained for at least 4 weeks apart before progression. Any pathological lymph nodes (whether target or non-target) reduced in short axis to \<10 mm. PR was defined as at least 30% decrease in sum of diameters of target lesions, taking as reference the baseline sum diameters. Participants who did not achieve a confirmed PR or CR, were censored at last adequate tumor assessment date when they did not progress (including deaths not due to underlying disease) or at maximum follow-up (from study start to study end date) when participant had an event for progression-free survival. Individual participant data have been reported for this outcome measure.

   Time frame: From date of start of treatment until CR or PR or censoring date (maximum of 556.1 weeks of treatment exposure)

7. DOR: Dose Expansion Phase

   DOR was defined as the time from first observation of response (CR or PR\] to the first time of progression or death. CR was defined as complete disappearance of all target and non-target lesions and sustained for at least 4 weeks apart before progression. Any pathological lymph nodes (whether target or non-target) must have reduction in short axis to (\<10 mm. PR defined as at least 30 percent (%) decrease in sum of diameters of target lesions, taking as reference the baseline sum diameters. For target disease, PD=at least a 20% increase in sum of longest diameters of all measured target lesions, taking as reference smallest sum on study, sum also demonstrated absolute increase of \>= 5 mm, or appearance of \>=1 new lesions. For non-target disease: PD=unequivocal progression of pre-existing lesions and if overall tumor burden increased sufficiently to merit discontinuation of therapy; appearance of any new unequivocal malignant lesion.

   Time frame: From first observation of response until first time of PD or death due to any cause (maximum of 257.3 weeks and 114.6 weeks of treatment exposure for melanoma participants and mCRC participants respectively)

8. TTR: Dose Expansion Phase

   TTR was defined as the time from date of treatment until first documented response (CR or PR). CR was defined as complete disappearance of all target and non-target lesions sustained for at least 4 weeks apart before progression. Any pathological lymph nodes (whether target or non-target) reduced in short axis to \<10 mm. PR was defined as at least 30% decrease in sum of diameters of target lesions, taking as reference the baseline sum diameters. Participants who did not achieve a confirmed PR or CR, were censored at last adequate tumor assessment date when they did not progress (including deaths not due to underlying disease) or at maximum follow-up (from study start to study end date) when participant had an event for progression-free survival. Individual participant data have been reported for this outcome measure.

   Time frame: From date of start of treatment until CR or PR or censoring date (maximum of 257.3 weeks and 114.6 weeks of treatment exposure for melanoma participants and mCRC participants respectively)

9. Overall Survival (OS): Dose Expansion Phase

   Overall survival was defined as the time from the date of first study treatment to the date of death due to any cause. Participants last known to be alive were censored at date of last contact. Analysis was performed using Kaplan-Meier method.

   Time frame: From start of study treatment until date of death or censoring date (maximum of 257.3 weeks and 114.6 weeks of treatment exposure for melanoma participants and mCRC participants respectively)

10. Maximum Observed Plasma Concentration of LGX818: Dose Escalation Phase

    Time frame: Pre-dose (0 hour), 0.5, 3, 4, 6, 8, 10 (only for BID arms), 24 hours post dose on Day 1 and 15 of Cycle 1 (each cycle=28 days)

11. Time Point of Maximum Concentration (Tmax) of LGX818: Dose Escalation Phase

    Time frame: Pre-dose (0 hour), 0.5, 3, 4, 6, 8, 10 (only for BID arms), 24 hours post dose on Day 1 and 15 of Cycle 1 (each cycle=28 days)

12. Area Under the Concentration-Time Curve From Time Zero to Infinity (AUCinf) of LGX818: Dose Escalation Phase

    AUC (inf) = Area under the plasma concentration versus time curve (AUC) from time zero (pre-dose) to extrapolated infinite time.

    Time frame: Pre-dose (0 hour), 0.5, 3, 4, 6, 8, 10 (only for BID arms), 24 hours post dose on Day 1 and 15 of Cycle 1 (each cycle=28 days)

13. Area Under the Concentration-Time Curve From Time Zero to Tau (AUCtau) of LGX818: Dose Escalation Phase

    Time frame: Pre-dose (0 hour), 0.5, 3, 4, 6, 8, 10 (only for BID arms), 24 hours post dose on Day 1 and 15 of Cycle 1 (each cycle=28 days)

14. Elimination Half-life (t1/2) of LGX818: Dose Escalation Phase

    t1/2 was the time measured for the plasma concentration to decrease by one half. Terminal phase half-life expressed in hours (hr).

    Time frame: Pre-dose (0 hour), 0.5, 3, 4, 6, 8, 10 (only for BID arms), 24 hours post dose on Day 1 and 15 of Cycle 1 (each cycle=28 days)

15. Apparent Total Plasma Clearance of Drug (CL/F) of LGX818: Dose Escalation Phase

    Time frame: Pre-dose (0 hour), 0.5, 3, 4, 6, 8, 10 (only for BID arms), 24 hours post dose on Day 1 and 15 of Cycle 1 (each cycle=28 days)

16. Apparent Volume of Distribution (Vz/F) of LGX818: Dose Escalation Phase

    Time frame: Pre-dose (0 hour), 0.5, 3, 4, 6, 8, 10 (only for BID arms), 24 hours post dose on Day 1 and 15 of Cycle 1 (each cycle=28 days)

17. Number of Participants According to Tumor Response Per RECIST Criteria- Dose Escalation

    Tumor response included: CR, PR, stable disease and disease progression (PD). CR=complete disappearance of all target and non-target lesions sustained for at least 4 weeks apart before progression. Any pathological lymph nodes (whether target or non-target) reduced in short axis to \<10 mm. PR=at least 30% decrease in sum of diameters of target lesions, taking as reference the baseline sum diameters. Stable Disease=neither sufficient shrinkage to qualify for PR or CR nor an increase in lesions which would qualify for PD. For target disease, PD=at least a 20% increase in sum of longest diameters of all measured target lesions, taking as reference smallest sum on study, sum also demonstrated absolute increase of \>= 5 mm, or appearance of \>=1 new lesions. For non-target disease: PD=unequivocal progression of pre-existing lesions and if overall tumor burden increased sufficiently to merit discontinuation of therapy; appearance of any new unequivocal malignant lesion.

    Time frame: From start of study treatment until first documentation of PD or death due to any cause or censoring date (maximum of 556.1 weeks of treatment exposure)

18. Maximum Observed Plasma Concentration of LGX818: Dose Expansion Phase

    Time frame: Predose (0 hour), 0.5, 2, 4, 6, 8, 24 hours post dose on Day 1,8 and 15 of Cycle 1 (cycle=28 days)

19. Vz/F of LGX818: Dose Expansion Phase

    Time frame: Predose (0 hour), 0.5, 2, 4, 6, 8, 24 hours post dose on Day 1,8 and 15 of Cycle 1 (cycle=28 days)

20. Tmax of LGX818: Dose Expansion Phase

    Tmax was the time required to reach the maximum plasma concentration (Cmax). First observed time to reach peak analyte concentration obtained directly from the experimental data without interpolation, expressed in hours (hr).

    Time frame: Predose (0 hour), 0.5, 2, 4, 6, 8, 24 hours post dose on Day 1,8 and 15 of Cycle 1 (cycle=28 days)

21. AUCinf of LGX818: Dose Expansion Phase

    AUC (inf) = Area under the plasma concentration versus time curve (AUC) from time zero (pre-dose) to extrapolated infinite time.

    Time frame: Predose (0 hour), 0.5, 2, 4, 6, 8, 24 hours post dose on Day 1,8 and 15 of Cycle 1 (cycle=28 days)

22. AUCtau of LGX818: Dose Expansion Phase

    Time frame: Predose (0 hour), 0.5, 2, 4, 6, 8, 24 hours post dose on Day 1,8 and 15 of Cycle 1 (cycle=28 days)

23. t1/2 of LGX818: Dose Expansion Phase

    Time frame: Predose (0 hour), 0.5, 2, 4, 6, 8, 24 hours post dose on Day 1,8 and 15 of Cycle 1 (cycle=28 days)

24. CL/F of LGX818: Dose Expansion Phase

    Time frame: Predose (0 hour), 0.5, 2, 4, 6, 8, 24 hours post dose on Day 1,8 and 15 of Cycle 1 (cycle=28 days)

25. Number of Participants According to BRAF V600 Mutation Status at Baseline: Dose Expansion

    Number of participants according to BRAF V600 mutation status as V600E (i.e., mutation of the BRAF gene in which valine \[V\] was substituted by glutamic acid \[E\] at amino acid 600) or other is reported in this outcome measure.

    Time frame: (Baseline) last non-missing value prior to the first dose (Baseline)

26. Number of Participants According to Tumor Response Per RECIST Criteria: Dose Expansion

    umor response included: CR, PR, stable disease and disease progression (PD). CR=complete disappearance of all target and non-target lesions sustained for at least 4 weeks apart before progression. Any pathological lymph nodes (whether target or non-target) reduced in short axis to \<10 mm. PR=at least 30% decrease in sum of diameters of target lesions, taking as reference the baseline sum diameters. Stable Disease=neither sufficient shrinkage to qualify for PR or CR nor an increase in lesions which would qualify for PD. For target disease, PD=at least a 20% increase in sum of longest diameters of all measured target lesions, taking as reference smallest sum on study, sum also demonstrated absolute increase of \>= 5 mm, or appearance of \>=1 new lesions. For non-target disease: PD=unequivocal progression of pre-existing lesions and if overall tumor burden increased sufficiently to merit discontinuation of therapy; appearance of any new unequivocal malignant lesion.

    Time frame: From start of study treatment until first documentation of PD or death due to any cause or censoring date (maximum of 257.3 weeks and 114.6 weeks of treatment exposure for melanoma participants and mCRC participants respectively)

Baseline characteristics

Individual participant data

Plan to share: No — Pfizer will provide access to individual de-identified participant data and related study documents (e.g. protocol, Statistical Analysis Plan (SAP), Clinical Study Report (CSR)) upon request from qualified researchers, and subject to certain criteria, conditions, and exceptions. Further details on Pfizer's data sharing criteria and process for requesting access can be found at: https://www.pfizer.com/science/clinical_trials/trial_data_and_results/data_requests.