Encorafenib

Encorafenib is an inhibitor of UGT1A1. Concomitant agents that are substrates of UGT1A1 (e.g. raltegravir, atorvastatin, dolutegravir) may have increased exposure and should be therefore administered with caution.

In vivo, encorafenib is an inhibitor of OATP1B1, OATP1B3 and/or BCRP. Coadministration of encorafenib with OATP1B1, OATP1B3 or BCRP substrates (such as rosuvastatin, atorvastatin, methotrexate) can result in increased concentrations.

Due to the potential risk for QT prolongation, it is recommended that serum electrolytes abnormalities, including magnesium and potassium, are corrected and risk factors for QT prolongation controlled (e.g. congestive heart failure, bradyarrhythmias) before treatment initiation and during treatment.

Encorafenib is a strong inducer of CYP3A4. Concomitant use with agents that are substrates of CYP3A4 (e.g., hormonal contraceptives) may result in loss of efficacy of these agents. If the coadministration of narrow therapeutic index CYP3A4 substrates cannot be avoided, adjust the dose of these substrates in accordance with their approved SmPC.

As encorafenib is primarily metabolised and eliminated via the liver, patients with mild to severe hepatic impairment may have increased encorafenib exposure over the range of inter-subject variability exposure.

In the absence of clinical data, encorafenib is not recommended in patients with moderate or severe hepatic impairment.

Administration of encorafenib should be undertaken with caution at a dose of 300 mg once daily in patients with mild hepatic impairment (Child-Pugh Class A).

Closer monitoring of encorafenib related toxicities in patients with mild hepatic impairment is recommended, including clinical examination and liver function tests, with assessment of ECGs as clinically appropriate during treatment.

Co-administration of moderate (diltiazem) and strong (posaconazole) CYP3A4 inhibitors with single doses of encorafenib in healthy volunteers resulted in a 2 and 3-fold increase in the area under the concentration-time curve (AUC), respectively and in 44.6% and 68.3% increase in maximum encorafenib concentration (C_max) respectively.

Model based predictions indicate that the effect of posaconazole after repeated administrations could be similar for AUC (3-fold increase) and slightly greater for C_max (2.7-fold increase). Model-based predictions for ketoconazole suggest an increase of approx. 5-fold for encorafenib AUC and 3 to 4-fold for encorafenib C_max after administration of encorafenib 450 and 300 mg QD, respectively. Therefore, concomitant administration of encorafenib with strong CYP3A4 inhibitors should be avoided (due to increased encorafenib exposure and potential increase in toxicity). Examples of strong CYP3A4 inhibitors include, but are not limited to, ritonavir, itraconazole, clarithromycin, telithromycin, posaconazole and grapefruit juice. If concomitant use of a strong CYP3A inhibitor is unavoidable, patients should be carefully monitored for safety.

Moderate CYP3A4 inhibitors should be co-administered with caution. Examples of moderate CYP3A4 inhibitors include, but are not limited to, amiodarone, erythromycin, fluconazole, diltiazem, amprenavir and imatinib. When encorafenib is co-administered with a moderate CYP3A inhibitor, patients should be carefully monitored for safety.

Co-administration of encorafenib with a strong CYP3A4 inducer was not assessed in a clinical study; however, a reduction in encorafenib exposure is likely and may result in compromised efficacy of encorafenib. Examples of strong CYP3A4 inducers include, but are not limited to carbamazepine, rifampicin, phenytoin and St. John’s Wort. Alternative agents with no to moderate CYP3A induction potential should be considered.

There are no clinical data with encorafenib in patients with severe renal impairment. Therefore, the potential need for dose adjustment cannot be determined. Encorafenib should be used with caution in patients with severe renal impairment.

There are no data on the effects of encorafenib on fertility in humans. Based on findings in animals, the use of encorafenib may impact fertility in males of reproductive potential. As the clinical relevance of this is unknown, male patients should be informed of the potential risk for impaired spermatogenesis.

In vitro, encorafenib potentially inhibits a number of other transporters. Agents that are substrates of renal transporters OAT1, OAT3, OCT2 (such as furosemide, penicillin) or agents that are substrates of the hepatic transporters OCT1 (such as, bosentan) or substrates of P-gp (e.g. posaconazole) may also have increased exposure.

Therefore, these agents, substrates of transporters should be co-administered with caution.

The safety of encorafenib in combination with binimetinib has not been established in patients with a baseline LVEF that is either below 50% or below the institutional lower limits of normal. Therefore, in these patients, binimetinib should be used with caution and for any symptomatic left ventricular dysfunction, Grade 3-4 LVEF decrease or for absolute decrease of LVEF from baseline of ≥10%, binimetinib and encorafenib should be discontinued and LVEF should be evaluated every 2 weeks until recovery.

There are no data from the use of encorafenib in pregnant women. Studies in animals have shown reproductive toxicity. Encorafenib is not recommended during pregnancy and in women of childbearing potential not using contraception. If encorafenib is used during pregnancy or if the patient becomes pregnant while taking encorafenib, the patient should be informed of the potential hazard to the foetus.

It is unknown whether encorafenib or its metabolites are excreted in human milk. A risk to the breastfed newborns/infants cannot be excluded. A decision must be made whether to discontinue breast-feeding or to discontinue encorafenib therapy taking into account the benefit of breast-feeding for the child and the benefit of therapy for the mother.

Women of childbearing potential/Contraception in females

Women of childbearing potential must use effective contraception during treatment with encorafenib and for at least 1 month following the last dose. Encorafenib may decrease the efficacy of hormonal contraceptives. Therefore, female patients using hormonal contraception are advised to use an additional or alternative method such as a barrier method (e.g. condom) during treatment with encorafenib and for at least 1 month following the last dose.

Fertility

There are no data on the effects of encorafenib on fertility in humans. Based on findings in animals, the use of encorafenib may impact fertility in males of reproductive potential. As the clinical relevance of this is unknown, male patients should be informed of the potential risk for impaired spermatogenesis.

Encorafenib has minor influence on the ability to drive or use machines. Visual disturbances have been reported in some patients treated with encorafenib during clinical studies. Patients should be advised not to drive or use machines if they experience visual disturbances or any other adverse reactions that may affect their ability to drive and use machines.

Summary of safety profile

The safety of encorafenib (450 mg orally once daily) in combination with binimetinib (45 mg orally twice daily) has been evaluated in the integrated safety population (ISP) of 372 patients including patients with BRAF V600 mutant unresectable or metastatic melanoma and BRAF V600E mutant advanced NSCLC (hereafter referred to as the Combo 450 ISP). In Combo 450 ISP, 274 patients received the combination for the treatment of BRAF V600 mutant unresectable or metastatic melanoma (in two Phase II studies (CMEK162X2110 and CLGX818X2109) and one Phase III study (CMEK162B2301, Part 1)), and 98 patients received the combination for the treatment of BRAF V600E mutant advanced NSCLC (in one Phase II study (ARRAY-818-202)). The most common adverse reactions (>25%) occurring in patients treated with encorafenib administered with binimetinib were fatigue, nausea, diarrhoea, vomiting, abdominal pain, myopathy/muscular disorders, and arthralgia.

The safety of encorafenib (300 mg orally once daily) in combination with binimetinib (45 mg orally twice daily) was evaluated in 257 patients with BRAF V600 mutant unresectable or metastatic melanoma (hereafter referred to as the Combo 300 population), based on the Phase III study (CMEK162B2301, Part 2). The most common adverse reactions (>25%) occurring in patients treated with encorafenib 300 mg administered with binimetinib were fatigue, nausea and diarrhoea.

The encorafenib single agent (300 mg orally once daily) safety profile is based on data from 217 patients with unresectable or metastatic BRAF V600-mutant melanoma (hereafter referred to as the pooled encorafenib 300 population). The most common adverse drug reactions (ADRs) (>25%) reported with encorafenib 300 were hyperkeratosis, alopecia, PPES, fatigue, rash, arthralgia, dry skin, nausea, myalgia, headache, vomiting and pruritus.

The safety of encorafenib (300 mg orally once daily) in combination with cetuximab (dosed as per its SmPC) was evaluated in 216 patients with BRAF V600E-mutant metastatic colorectal cancer, based on the phase III study ARRAY-818-302. The most common ADRs (>25%) reported in this population were: fatigue, nausea, diarrhoea, dermatitis acneiform, abdominal pain, arthralgia/musculoskeletal pain, decreased appetite, rash and vomiting.

The rate of all study drug discontinuation due to any adverse reaction was 1.9% in patients treated with encorafenib 300 mg in combination with cetuximab.

Tabulated list of adverse reactions

Adverse reactions are listed below by MedDRA body system organ class and the following frequency convention: very common (≥1/10), common (≥1/100 to <1/10), uncommon (≥1/1 000 to <1/100), rare (≥1/10 000 to <1/1 000), very rare (<1/10 000), not known (cannot be estimated from the available data). Within each frequency grouping, adverse reactions are presented in order of decreasing seriousness.

Adverse reactions:

^* composite terms which included more than one preferred term
^a includes keratoacanthoma, squamous cell carcinoma and squamous cell carcinoma of skin
^b includes, but not limited to, angioedema, drug hypersensitivity, hypersensitivity, hypersensitivity vasculitis and urticaria
^c includes facial nerve disorder, facial paralysis, facial paresis, Bell’s palsy
^d includes but not limited to extrasystoles and sinus tachycardia
^e includes erythema, generalised erythema, plantar erythema
^f includes dermatitis exfoliative, skin exfoliation, exfoliative rash
^g includes myalgia, muscle fatigue, muscle injury, muscle spasm, muscle weakness
^h includes left ventricular dysfunction, ejection fraction decreased, cardiac failure and ejection fraction abnormal
ⁱ includes haemorrhage at various sites including, but not limited to, cerebral haemorrhage, intracranial haemorrhage, vaginal haemorrhage, heavy menstrual bleeding, intermenstrual bleeding, haematochezia, haemoptysis, haemothorax, gastrointestinal haemorrhage and haematuria
^j includes, but not limited to, pulmonary embolism, deep vein thrombosis, embolism, thrombophlebitis, thrombophlebitis superficial, thrombosis, phlebitis, superior vena cava syndrome, mesenteric vein thrombosis and vena cava thrombosis
^k includes colitis, colitis ulcerative, enterocolitis and proctitis
^l includes myalgia, muscular weakness, muscle spasm, muscle injury, myopathy, myositis
^m includes, but not limited to, fluid retention, peripheral oedema, localised oedema, generalised oedema and swelling

When encorafenib was used at a dose of 300 mg once daily in combination with binimetinib 45 mg twice daily (Combo 300) in study CMEK162B2301-Part 2, the frequency category was lower compared to the pooled Combo 450 population for the following adverse reactions: anaemia, peripheral neuropathy, haemorrhage, hypertension, pruritus (common); and colitis, increased amylase and increased lipase (uncommon).

Description of selected adverse reactions

Cutaneous malignancies

Cutaneous squamous cell carcinoma

Melanoma and NSCLC:

In the Combo 450 ISP, cuSCC including keratoacanthomas was observed in 3.0% (11/372) of patients. The median time to onset of the first event of cuSCC (all grades) was 6.5 months (range 1.0 to 22.8 months).

In the pooled encorafenib 300 population, cuSCC was reported in 7.4% (16/217) patients. For patients in the Phase III study (CMEK162B2301) who developed cuSCC, the median time to onset of the first event of cuSCC (all grades) was 2.3 months (range 0.3 to 12.0 months).

Colorectal cancer:

In patients treated with encorafenib 300 mg in combination with cetuximab, cuSCC including keratoacanthoma was observed in 1.4% (3/216) of patients. The times to first event of cuSCC (all grades) were 0.5, 0.6 and 3.6 months for these 3 patients.

New primary melanoma

Melanoma:

In the pooled encorafenib 300 population, new primary melanoma events occurred in 4.1% of patients (9 /217) and was reported as Grade 1 in 1.4% (3/217) of patients, Grade 2 in 2.1% (4/217) of patients, Grade 3 in 0.5% (1/217) of patients and Grade 4 in 0.5% (1/217) of patients.

Colorectal cancer:

In patients treated with encorafenib 300 mg in combination with cetuximab, new primary melanoma events occurred in 1.9% of patients (4/216) and were reported as Grade 2 in 0.9% (2/216) of patients and Grade 3 in 0.9% (2/216) of patients.

Ocular events

Melanoma and NSCLC:

In the Combo 450 population, uveitis was reported in 3.5% (13/372) of patients, and was Grade 1 in 0.5% (2/372), Grade 2 in 2.7% (10/372) and Grade 3 in 0.3% (1/372). Visual impairment, including blurred vision and reduced visual acuity, occurred in 23.1% (86/372) of patients. Uveitis and visual impairment were generally reversible.

RPED occurred in 22.3% (83/372) of patients, most of them had Grade 1-2 and 1.6% (6/372) had Grade 3 events.

In Study CMEK162B2301-Part 2, in the Combo 300 arm, RPED was observed in 12.5% (32/257) of patients with 0.4% (1/257) Grade 4 event.

Left ventricular dysfunction

LVD was reported when encorafenib is used in combination with binimetinib in melanoma and NSCLC patients.

Haemorrhage

Melanoma and NSCLC:

Haemorrhagic events were observed in 16.7% (62/372) of patients in the Combo 450 ISP. Most events were Grade 1 or 2: 13.2% (49/372), and 3.5% (13/372) were Grade ≥3. Few patients required dose interruptions or dose reductions (2.4% or 9/372). Haemorrhagic events led to discontinuation of treatment in 0.8% (3/372) of patients. The most frequent haemorrhagic events were haematuria in 2.7% (10/372) of patients, haematochezia in 2.7% (10/372) and rectal haemorrhage in 2.2% (8/372) of patients. Fatal gastric ulcer haemorrhage, with multiple organ failure as a concurrent cause of death, occurred in one patient. Cerebral haemorrhage/intracranial haemorrhage was reported in 1.3% (5/372) of patients, with fatal outcome in 4 patients. All events occurred in the setting of new or progressive brain metastases.

In Study CMEK162B2301-Part 2, in the Combo 300 arm, haemorrhagic events were observed in 6.6% (17/257) of patients and were Grade 3-4 in 1.6% (4/257) of patients.

Colorectal cancer:

Haemorrhagic events were observed in 21.3% (46/216) of patients treated with encorafenib 300 mg in combination with cetuximab; 1.4% (3/216) of patients were Grade 3 events and one fatal case was reported. Dose interruptions or dose reductions were required in 1.9% (4/216) of patients. Haemorrhagic events led to treatment discontinuation in 1 patient (0.5%).

The most frequent haemorrhagic events were epistaxis in 6.9% (15/216) of patients, haematochezia in 2.8% (6/216), rectal haemorrhage in 2.8% (6/216) of patients and haematuria in 2.8% (6/216) of patients.

Hypertension

Hypertension was reported when encorafenib was used in combination with binimetinib in melanoma and NSCLC patients.

Venous thromboembolism

VTE was reported when encorafenib is used in combination with binimetinib in melanoma and NSCLC patients.

Pancreatitis

Melanoma and NSCLC:

In the Combo 450 ISP, pancreatic enzyme elevation, mostly asymptomatic, was reported. Amylase and lipase elevations were reported in 4.0% (15/372) and 7.8% (29/372) of patients, respectively. Pancreatitis was reported in 0.8% (3/372) of patients. All 3 patients experienced Grade 3 events. Pancreatitis led to dose interruption in 0.3% (1/372) of patients.

Colorectal cancer:

In the population treated with encorafenib 300 mg in combination with cetuximab, pancreatitis grade 3 with lipase and amylase increased events were reported in 1 patient (0.5%) and led to dose interruption.

Dermatologic reactions

Rash

Melanoma and NSCLC:

In the Combo 450 ISP, rash occurred in 20.4% (76/372) of patients. Most events were mild, with Grade 3 or 4 events reported in 1.1 (4/372) of patients. Rash led to discontinuation in 0.8% (3/372) patients and to dose interruption or dose modification in 2.4% (9/372) of patients.

In the pooled encorafenib 300 population, rash was reported in 43.3% (94/217) of patients. Most events were mild, with Grade 3 or 4 events reported in 4.6% (10/217) of patients. Rash led to discontinuation in 0.5% (1/217) of patients and to dose interruption or dose modification in 7.4% (16/217) of patients.

Colorectal cancer:

In patients treated with encorafenib 300 mg in combination with cetuximab, rash occurred in 30.6% (66/216) of patients. Most events were mild, with Grade 3 event reported in 0.5% (1/216) of patients. Rash led to dose interruption in 0.5% (1/216) of patients.

Palmar-plantar erythrodysaesthesia syndrome (PPES)

Melanoma and NSCLC:

PPES was reported in 5.1% (19/372) of patients in the Combo 450 ISP. All the PPES adverse reactions were either Grade 1 (2.7%) or Grade 2 (2.4%). Dose interruption or dose modification occurred in 1.1% (4/372) of patients.

In the Combo 300 arm in Part 2 of the pivotal study, PPES was observed in 3.9% (10/257) of patients with Grade 3 reported in 0.4% (1/257) of patients.

In the pooled encorafenib 300 population, PPES was reported in 51.6% (112/217) of patients. Most events were mild-moderate: Grade 1 in 12.4% (27/217) of patients, Grade 2 in 26.7% (58/217) and Grade 3 in 12.4% (27/217) of patients. PPES led to discontinuation in 4.1% (9/217) of patients and to dose interruption or dose modification in 23.0% (50/217) of patients.

Colorectal cancer:

In the population treated with encorafenib 300 mg in combination with cetuximab, PPES was reported in 5.1% (11/216) of patients. Most of PPES adverse reactions were Grade 1 in 3.7% (8/216). Grade 2 events were reported in 0.9% (2/216) of patients, and Grade 3 in 0.5% (1/216) of patients. No dose interruption, dose modification or treatment discontinuation was required.

Dermatitis acneiform

Melanoma and NSCLC:

Dermatitis acneiform was reported when encorafenib is used in combination with binimetinib.

Colorectal cancer:

In patients treated with encorafenib 300 mg in combination with cetuximab, dermatitis acneiform occurred in 33.3% (72/216) of patients and was mostly Grade 1 (25.5% (55/216) of patients), or 2 (6.9% (15/216) of patients). Dose reduction or interruption was reported in 2.3% (5/216) of patients.

No treatment discontinuation was reported. Dermatitis acneiform was generally reversible.

Photosensitivity

Melanoma and NSCLC:

In the Combo 450 ISP, photosensitivity was observed in 4.3% (16/372) of patients. Most events were Grade 1-2, with Grade 3 reported in 0.3% (1/372) of patients and no event led to discontinuation. Dose interruption or dose modification was reported in 0.3% (1/372) of patients.

In the pooled encorafenib 300 population, photosensitivity was reported in 4.1% (9/217) of patients. All events were Grade 1-2. No event required discontinuation, dose modification or interruption.

Facial paresis

Melanoma and NSCLC:

In the Combo 450 ISP, facial paresis occurred in 0.8% (3/372) of patients including Grade 3 in 0.3% (1/372) of patients. The events were reversible, and no event led to treatment discontinuation. Dose interruption or modification was reported in 0.3% (1/372) of patients.

In the pooled encorafenib 300 population, facial paresis was observed in 7.4% (16/217) of patients. Most events were mild-moderate: Grade 1 in 2.3% (5/217); Grade 2 in 3.7% (8/217) and Grade 3 in 1.4% (3/217) of patients. The median time to onset of the first event of facial paresis was 0.3 months (range 0.1 to 12.1 months). Facial paresis was generally reversible and led to treatment discontinuation in 0.9% (2/217). Dose interruption or modification was reported in 3.7% (8/217) and symptomatic treatment including corticosteroids was reported in 5.1% (11/217) of patients.

CK elevation and rhabdomyolysis

CK elevation and rhabdomyolysis occurred when encorafenib is used in combination with binimetinib in melanoma and NSCLC patients.

Renal dysfunction

Melanoma and NSCLC:

In the Combo 450 ISP, mild, mostly Grade 1, asymptomatic blood creatinine elevation was noted in 9.4% (35/372) of patients treated with the Combo 450. The incidence of Grade 3 or 4 elevation was 0.8% (3/372). Renal failure events, including acute kidney injury, renal failure and renal impairment, were reported in 3.5% (13/372) patients treated with encorafenib and binimetinib with Grade 3 or 4 events in 1.9% (7/372) of patients. Renal failure was generally reversible with dose interruption, rehydration and other general supportive measures.

Colorectal cancer:

Blood creatinine elevation was reported in 2.8% (6/216) of patients treated with encorafenib 300 mg in combination with cetuximab. All were mild except one event of Grade 4. Renal failure events were Grade 3 or 4 and reported as acute kidney injury in 1.9% (4/216) of patients and renal failure in 0.5% (1/216) of patients.

Liver laboratory abnormality

Melanoma and NSCLC:

The incidences of liver laboratory abnormalities reported in the Combo 450 ISP are listed below:

• Increased transaminases: 16.4% (61/372) overall – 6.5% (24/372) Grade 3
• Increased GGT: 11.3% (42/372) overall – 6.7% (25/372) Grade 3-4

In Study CMEK162B2301-Part 2, in the Combo 300 arm, the incidence of liver laboratory abnormalities was:

• Increased transaminases: 13.2% (34/257) overall – 5.4% (14/257) Grade 3-4
• Increased GGT: 14.0% (36/257) overall – 4.7% (12/257) Grade 3-4

Colorectal cancer:

The incidence of increased transaminases in patients treated with encorafenib 300 mg in combination with cetuximab was 8.8% (19/216) of patients, with Grade 3 in 1.4% (3/216) of patients.

Gastrointestinal disorders

Melanoma and NSCLC:

In the Combo 450 ISP, diarrhoea was observed in 41.7% (155/372) of patients and was Grade 3-4 in 3.8% (14/372) patients. Diarrhoea led to treatment discontinuation in 0.8% of patients and to dose interruption or dose modification in 8.1% of patients.

Constipation occurred in 24.7% (92/372) of patients and was Grade 1 or 2. Abdominal pain was reported in 28.5% (106/372) of patients and was Grade 3 in 2.2% (8/372) patients. Nausea occurred in 46.0% (171/372) with Grade 3 observed in 3.0% (11/372) of patients. Vomiting occurred in 31.2% (116/372) of patients with Grade 3 reported in 1.9% (7/372) of patients.

In Study CMEK162B2301-Part 2, in the Combo 300 arm, nausea was observed in 27.2% (70/257) of patients and was Grade 3 in 1.6% (4/257) of patients. Vomiting occurred in 15.2% (39/257) of patients with Grade 3 reported in 0.4% (1/257) of patients. Diarrhoea occurred in 28.4% (73/257) of patients with Grade 3 reported in 1.6% (4/257) of patients.

Colorectal cancer:

In patients treated with encorafenib 300 mg in combination with cetuximab, diarrhoea was observed in 38.4% (83/216) of patients and was Grade 3 in 2.8% (6/216) of patients. Diarrhoea led to treatment discontinuation in 0.5% (1/216) of patients and to dose interruption or dose modification in 3.7% (8/216) of patients.

Abdominal pain was reported in 36.6% (79/216) of patients and was Grade 3 in 5.1% (11/216) of patients. Nausea occurred in 38.0% (82/216) of patients with Grade 3 observed in 0.5% (1/216) of patients. Vomiting occurred in 27.3% (59/216) of patients with Grade 3 reported in 1.4% (3/216) of patients. Constipation occurred in 18.1% (39/216) of patients and was Grade 1 or 2.

Gastrointestinal disorders were typically managed with standard therapy.

Anaemia

Melanoma and NSCLC:

In the Combo 450 ISP, anaemia was reported in 23.1% (86/372) of patients; 7.0% (26/372) patients had a Grade 3 or 4. No patients discontinued treatment due to anaemia, 3.2% (12/372) required dose interruption or dose modification.

In Study CMEK162B2301-Part 2, in the Combo 300 arm, anaemia was observed in 9.7% (25/257) of patients with Grade 3-4 reported in 2.7% (7/257) patients.

Headache

Melanoma and NSCLC:

In the Combo 450 ISP, headache occurred in 18.8% (70/372) of patients, including Grade 3 in 1.1% (4/372) of patients.

In Study CMEK162B2301-Part 2, in the Combo 300 arm, headache was reported in 12.1% (31/257) of patients and was Grade 3 in 0.4% (1/257) of patients.

Colorectal cancer:

In patients treated with encorafenib 300 mg in combination with cetuximab, headache occurred in 20.4% (44/216) of patients and was Grade 1 or 2.

Fatigue

Melanoma and NSCLC:

In the Combo 450 ISP, fatigue occurred in 48.1% (179/372) of patients including Grade 3 or 4 in 4.3% (16/372) of patients.

In Study CMEK162B2301-Part 2, in the Combo 300 arm, fatigue was observed in 33.5% (86/257) of patients with 1.6% (4/257) Grade 3-4 events.

Colorectal cancer:

In patients treated with encorafenib 300 mg in combination with cetuximab, fatigue was reported in 56.9% (123/216) of patients including Grade 3 in 7.9% (17/216) of patients.

Special populations

Elderly

Melanoma and NSCLC

In patients treated with Combo 450 ISP (n=372), 230 patients (61.8%) were <65 years old, 107 patients (28.8%) were 65-74 years old and 35 patients (9.4%) were aged >75. No overall differences in safety or efficacy were observed between elderly patients (≥65) and younger patients except diarrhoea and pruritus that were more frequently reported in elderly patients.

In the age subgroup of patients aged ≥75 years, Grade ≥3 adverse reactions (62.9% vs 47.5%), adverse reactions (all grades) requiring dose modification of any study drug (60.0% vs 48.1%) or leading to treatment discontinuation (25.7% vs 7.4%) were more frequently reported than in patients <75 years. The most common adverse reactions reported with a higher incidence in patients aged ≥75 years compared to patients aged <75 years included fatigue, nausea, diarrhoea, vomiting and anaemia

Colorectal cancer

In patients treated with encorafenib 300 mg in combination with cetuximab (n=216), 134 patients (62%) were <65 years old, 62 patients (28.7%) were 65-74 years old, and 20 patients (9.3%) were aged ≥75. The most common adverse reactions reported with a higher incidence in patients aged ≥65 years compared to patients aged <65 years included vomiting, pain in extremity and dizziness.

In the colorectal cancer population, due to a very small number of patients treated in the age subgroup of patients aged ≥75 years, differences in the incidence of adverse reactions compared to patients aged <75 years could not be assessed.