TAF MEK Lung cancer - Efficacy - HCP

Efficacy of TAFINLAR® (dabrafenib) +  MEKINIST® (trametinib)

TAFINLAR in combination with MEKINIST is indicated in adult patients with advanced non-small cell lung cancer (NSCLC) with a BRAF V600 mutation.1,2

Common adverse events include:

  • TAFINLAR + MEKINIST: The most common adverse reactions (incidence ≥ 20%) for dabrafenib in combination with trametinib were pyrexia, fatigue, nausea, chills, headache, diarrhoea, vomiting, arthralgia and rash1,2

  • TAFINLAR: The most common adverse reactions (incidence >15%) reported with dabrafenib were hyperkeratosis, headache, pyrexia, arthralgia, fatigue, nausea, papilloma, alopecia, rash and vomiting1

  • MEKINIST: The most common adverse reactions (incidence ≥20%) for trametinib were rash, diarrhoea, fatigue, oedema peripheral, nausea and dermatitis acneiform2

For more safety information on TAFINLAR and MEKINIST, click here.

For the full safety profile, please refer to the Summary of Product Characteristics (SmPC) for TAFINLAR and MEKINIST.

Adverse event reporting: Details of how to report adverse events are available at the bottom of the page. Please refer to the respective SmPC for all licensed indications.

Durable overall survival (OS) rate in advanced NSCLC

In a 5-year follow-up study of treatment-naïve and pretreated patients, with a median follow-up of 16.3 and 16.6 months, respectively, the estimated median OS rates were 17.3 months (95% CI: 12.3–40.2) and 18.2 months (95% CI: 14.3–28.6).3

TAFINLAR + MEKINIST is a proven, first-line treatment option for eligible patients with BRAF V600-mutated NSCLC1–4


How effective is TAFLINAR + MEKINIST in newly diagnosed patients with BRAF V600E-mutated, advanced NSCLC?


Study design

The efficacy and safety profile of TAFLINAR + MEKINIST was assessed in 171 patients with BRAF V600E mutation-positive NSCLC in a Phase II, multicohort, multicentre, non-randomised, open-label study (NCT01336634). Patients were sequentially enrolled into 3 different cohorts based on the number of prior lines of systemic treatment for metastatic disease.1,2,5,6

Image
Schematic showing the study design for the non-small cell lung cancer pivotal trial for Tafinlar and Mekinist.

Study endpoints:

Primary endpoint

Investigator-assessed ORR*

Secondary endpoints

PFS, OS, DOR, safety, tolerability and pharmacokinetics

Adapted from Planchard D, et al. ASCO virtual meeting, May 29–31, 2020. Poster6

*Defined as the percentage of patients who achieved a confirmed complete response or partial response per Response Evaluation Criteria In Solid Tumours version 1.1 (RECIST v1.1).

Inclusion/exclusion criteria

Inclusion criteria

  • Stage IV NSCLC.

  • Measurable disease per Response Evaluation Criteria In Solid Tumors (RECIST) version 1.1.

  • Presence of BRAF V600E mutation (based on local testing).

  • ECOG performance status 0–2.

  • Estimated life expectancy of at least 3 months.

Further details on inclusion and exclusion criteria can be found in Planchard et al. 20174 or at https://clinicaltrials.gov/ct2/show/NCT01336634.

Exclusion criteria

  • Patients who had received previous BRAF or MEK inhibitor therapy were eligible for enrolment into cohort B, but were excluded from cohort C. Although patients in cohort C could have no previous systemic therapy for metastatic disease, patients who tested positive could have received these agents as adjuvant therapy. This is the major difference between the cohorts.

  • Patients with brain metastases were not permitted unless they were asymptomatic, untreated, and measured less than 1 cm, or, if treated, were clinically and radiographically stable 3 weeks after local therapy (which could include surgery or radiotherapy).

  • Pregnant women, patients with confirmed hepatitis B or C virus infection, or patients with a history or signs of cardiovascular risk.

  • Patients with a history of interstitial lung disease, pneumonitis, or a history of or current evidence of retinal vein occlusion.

Baseline demographics

Baseline characteristics of pre-treated (cohort B) and treatment-naïve (cohort C) patients3

Baseline characteristic

Pre-treated (cohort B)
(n=57)

Treatment-naïve (cohort C)
(n=36)

Age (years)

Median (range)

64.0 (41–88)

67.0 (44–91)

Age group (years), n (%)

≥18 to <65

29 (51)

14 (39)

≥65

28 (49)

22 (61)

Sex, n (%)

Female

28 (49)

22 (61)

ECOG performance status, n (%)

0

17 (30)

13 (36)

1

35 (61)

22 (61)

2

5 (9)

1 (3)

Smoking history, n (%)

Never smoked

16 (28)

10 (28)

Current smoker

6 (11)

5 (14)

Former smoker

35 (61)

21 (58)

Efficacy outcomes in first and second-line patients

ORR, DOR, PFS and OS for pre-treated (cohort B) and treatment-naïve (cohort C) patients3

Endpoint

Pre-treated (cohort B)
(n=57)

Treatment-naïve (cohort C)
(n=36)

ORR, % (CR+PR)

68.4 (39)

63.9 (23)

mDOR, months (95% CI)

9.8 (6.9–18.3)

10.2 (8.3–15.2)

mOS, months (95% CI)

18.2 (14.3–28.6)

17.3 (12.3–40.2)

5-year survival rates, %

19

22

1L, first-line; BID, twice daily; BRAF V600E, mutation of the BRAF gene at valine (V) 600 to glutamate (E); CI, confidence interval; CR, complete response; DOR, duration of response; ECOG, Eastern Cooperative Oncology Group; MEK, mitogen-activated extracellular signal-regulated kinase; NE, not estimable; NSCLC, non-small cell lung cancer; ORR, overall response rate; OS, overall survival; PFS, progression-free survival; PR, partial response; QD, once daily; RECIST, Response Evaluation Criteria In Solid Tumours; SmPC, summary of product characteristics.

References

  1. TAFINLAR (dabrafenib) Summary of Product Characteristics.

  2. MEKINIST (trametinib) Summary of Product Characteristics.

  3. Planchard D, et al. J Thorac Oncol 2022;17:103–115.

  4. Planchard D, et al. Lancet Oncol 2017;18:1307–1316.

  5. Clinicaltrials.gov. NCT01336634 Available at: https://clinicaltrials.gov/ct2/show/record/NCT01336634?view=record. [Accessed April 2025].

  6. Planchard D, et al. ASCO virtual meeting, May 29–31, 2020. Poster.

UK | April 2025 | FA-11217989

Adverse events should be reported. Reporting forms and information can be found at www.mhra.gov.uk/yellowcard. Adverse events should also be reported to Novartis online through the pharmacovigilance intake (PVI) tool at www.novartis.com/report, or alternatively email [email protected] or call 01276 698370.


Source URL: https://www.pro.novartis.com/uk-en/medicines/oncology/tafinlar-mekinist/lung-cancer/efficacy