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Active, not recruitingNCT06687369Updated Sep 10, 2026

A Study to Compare Pharmacokinetics, Efficacy, Safety, and Immunogenicity of MB12 (Proposed Pembrolizumab Biosimilar) to Keytruda® in Non-small Cell Lung Cancer (BENITO Study)

A Phase 3 interventional study of MB12 (Proposed Pembrolizumab Biosimilar) and EU-sourced Keytruda® in Non Squamous Non Small Cell Lung Cancer, sponsored by mAbxience Research S.L.. Active, not recruiting at 173 sites in 24 countries. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2026-09-10.

Sponsored by mAbxience Research S.L. (part of Fresenius Kabi) · Phase 3, Interventional, and Treatment

Phase
Phase 3
Study type
Interventional
Enrollment
726
Allocation
Randomized
Ages
18 Years and older
Sex
All
01

Study summary

This is a randomized, multicenter, multinational, double-blind, integrated pharmacokinetics (PK) and efficacy similarity study to compare the PK, efficacy, safety, and immunogenicity of MB12 versus Keytruda® in combination with pemetrexed-platinum chemotherapy as first-line treatment in patients with metastatic non-squamous NSCLC.

02

Conditions studied

  • Non Squamous Non Small Cell Lung Cancer
03

In context

Carcinoma, Non-Small-Cell Lung

7,620 studies on the registry are indexed under Carcinoma, Non-Small-Cell Lung; 1,838 are open to participants now.

This study's planned enrollment of 726 is above the median of 62 across 6,019 interventional studies indexed under Carcinoma, Non-Small-Cell Lung.

Browse Carcinoma, Non-Small-Cell Lung studies →

Lead sponsor

mAbxience Research S.L. is the lead sponsor of 15 studies on the registry; 1 is open to participants now.

First submitted after mAbxience Research S.L. became part of Fresenius Kabi.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  1. Adult male/female patients ≥18 years old at the time of signing the form (ICF).
  2. Histologic or cytologic diagnosis of advanced NSCLC, stage IV (defined by the 8th edition of the Tumor Node [TNM] classification), with no EGFR sensitizing (activating) mutation or ALK translocation, and who have not received prior systemic treatment for metastatic NSCLC. In those patients in whom the pleural or pericardial effusion is the only location of metastatic disease, confirmation of its malignant etiology is required.
  3. At least 1 radiographically according to (RECIST) 1.1.
  4. Known status of expression.
  5. Performance based on the (ECOG) performance status ≤1.
  6. Adequate hepatic, renal, hematologic, endocrine, and coagulation function.

Exclusion criteria

Exclusion Criteria:

  1. Predominantly squamous cell histology NSCLC. Mixed tumors will be categorized by the predominant cell type; if small cell elements are present, the patient is not eligible.
  2. Known history of central nervous system and/or carcinomatous meningitis.
  3. Prior anti-programmed cell death (PD)-1, , anti-PD-L2, anti-CD137, or anti-cytotoxic T lymphocyte associated protein (CTLA)-4 therapy (including ipilimumab or any other antibody or drug that specifically targets co-stimulation of T-cells or immune checkpoints).
  4. Major surgery within 3 weeks of the first dose of study treatment.
  5. Active disease that has required systemic treatment in the last 2 years.
  6. and/or intolerance to the administration of pembrolizumab or known sensitivity to any component of pembrolizumab.
  7. Has a known sensitivity to any component of cisplatin, carboplatin, or pemetrexed.
Terms in these criteria, in plain language(8)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

Metastases

Cancer that has spread from where it began to other parts of the body. “Metastatic” cancer is cancer that has spread this way.

Measurable disease

The amount of disease can be tracked with a defined measurement, so the study can see whether it shrinks or grows. It might be a tumour measured on a scan or, in some blood cancers such as myeloma, a marker measured in blood or urine.

The criteria or the study team say which measurement counts — having no tumour visible on a scan does not by itself rule you out.

RECIST

The standard rules for measuring tumours on CT or MRI scans, to tell whether a cancer is shrinking, stable or growing during treatment.

“Measurable disease per RECIST 1.1” usually means at least one tumour 10 mm or more at its longest on a CT scan, or a lymph node 15 mm or more across its short axis.

PD-1, PD-L1 and checkpoint inhibitors

PD-1, PD-L1 and CTLA-4 are proteins that act as brakes on the immune system. Checkpoint inhibitors, such as pembrolizumab or nivolumab, block them so the immune system can attack a cancer.

PD-L1 can also be measured in a tumour sample. Some scores count stained tumour cells only (TPS); others also count certain immune cells (CPS). The study names the score and the minimum it uses.

ECOG performance status

A scale of how much an illness limits everyday activity. For people being assessed to join a study, scores run from 0 (fully active) to 4; lower is more active.

0
Fully active, no restrictions.
1
Limited in strenuous activity, but walking and able to do light work, such as housework or office work.
2
Walking and able to look after yourself, but unable to work; up and about more than half of waking hours.
3
Able to look after yourself only in part; in bed or a chair more than half of waking hours.
4
Unable to look after yourself at all; in bed or a chair all day.

Studies most often ask for 0–1 or 0–2. Your doctor gives the score; the WHO scale uses the same steps. The full scale also has 5, which records death.

Autoimmune disease

A condition in which the immune system attacks the body’s own tissues, such as rheumatoid arthritis, lupus, psoriasis, type 1 diabetes or inflammatory bowel disease.

Immunotherapy studies often leave out active autoimmune disease, and some name exceptions, such as thyroid disease on replacement hormone. Check the exceptions this study lists.

Contraindication

A reason a treatment, test or procedure should not be given to a particular person, such as an allergy, another illness or a medicine they take.

05

Study design

Phase
Phase 3
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Triple (Participant, Care provider, Investigator)
Enrollment
726 participants (estimated)

Study arms

  • Experimental
    MB12 (Proposed Pembrolizumab Biosimilar)

    MB12 (Proposed Pembrolizumab Biosimilar) + Pemetrexed + Carboplatin/ Cisplatin

    Drug: MB12 (Proposed Pembrolizumab Biosimilar) · Drug: Pemetrexed · Drug: Carboplatin · Drug: Cisplatin

  • Active comparator
    EU- sourced Keytruda®

    EU- sourced Keytruda® + Pemetrexed + Carboplatin/ Cisplatin

    Drug: EU-sourced Keytruda® · Drug: Pemetrexed · Drug: Carboplatin · Drug: Cisplatin

  • Active comparator
    US- sourced Keytruda®

    US- sourced Keytruda® + Pemetrexed + Carboplatin/ Cisplatin

    Drug: US-sourced Keytruda® · Drug: Pemetrexed · Drug: Carboplatin · Drug: Cisplatin

Interventions

  • DrugMB12 (Proposed Pembrolizumab Biosimilar)

    200mg IV, every 3 weeks on Day 1

  • 200mg IV, every 3 weeks on Day 1

  • 200mg IV, every 3 weeks on Day 1

  • 500 mg/m2 IV, every 3 weeks on Day 1

  • Area under the curve (AUC) 5 IV, every 3 weeks on Day 1 for 4 cycles.

  • 75 mg/m2 IV, every 3 weeks on Day 1 for 4 cycles

06

What researchers measure

Primary outcomes

  1. To demonstrate the pharmacokinetic (PK) bioequivalence of MB12, EU-sourced Keytruda® and US-sourced Keytruda® in combination with chemotherapy

    Area under the concentration-time curve (AUC) between Cycle 1 and Cycle 2 (AUC from time 0 to 504 hours postdose \[AUC0-504\]. AUC at steady state (AUCss) between Cycle 7 and Cycle 8.

    Time frame: Week 1 - Week 24

  2. To demonstrate the efficacy equivalence of MB12 and Keytruda® in combination with chemotherapy administered as first-line treatment in patients with advanced/metastatic non-squamous NSCLC (any PD-L1 expression type).

    Objective response rate (ORR), up to and including 24 weeks (end of Cycle 8)

    Time frame: Week 1 - Week 24

Secondary outcomes

  1. To assess the efficacy of MB12 as compared with Keytruda® based on other efficacy parameters and timepoints over the study period.

    Objective response rate (ORR), Progression-free survival (PFS), Duration of response (DOR) and Overall survival (OS)

    Time frame: Week 1 - Week 52

  2. To compare the PK profile based on other PK parameters and timepoints (not covered by the primary PK endpoints) of MB12 as compared with Keytruda® over the study period.

    Maximum concentration (Cmax), Time to maximum concentration (Tmax), Minimum concentration (Ctrough), Clearance (CL), Elimination half-life (t1/2), Distribution volume (Vd)

    Time frame: Week 1 - Week 52

  3. To assess the safety and tolerability of MB12 as compared with Keytruda®

    Treatment-emergent adverse events (TEAEs)

    Time frame: Week 1 - Week 52

  4. To assess the immunogenicity of MB12 as compared with Keytruda®

    Anti-drug antibodies (ADAs) and Neutralizing antibodies (NAbs) in ADA-positive samples

    Time frame: Week 1 - Week 52

07

Study locations

173 sites
  • Site 101001
    Yerevan, Armenia
  • Site 101002
    Yerevan, Armenia
  • Site 101003
    Yerevan, Armenia
  • Site 101004
    Yerevan, Armenia
  • Site 103001
    Sarajevo, Bosnia and Herzegovina
  • Site 103002
    Tuzla, Bosnia and Herzegovina
  • Site 103003
    Zenica, Bosnia and Herzegovina
  • Site 301014
    Barretos, Brazil
  • Site 301026
    Belém, Brazil
  • Site 301002
    Belo Horizonte, Brazil
  • Site 301023
    Bento Gonçalves, Brazil
  • Site 301006
    Blumenau, Brazil
  • Site 301019
    Caxias do Sul, Brazil
  • Site 301015
    Curitiba, Brazil
  • Site 301028
    Curitiba, Brazil
  • Site 301024
    Florianópolis, Brazil
  • Site 301010
    Fortaleza, Brazil
  • Site 301011
    Ijuí, Brazil
  • Site 301008
    Itajaí, Brazil
  • Site 301012
    Jaú, Brazil
  • Site 301018
    Natal, Brazil
  • Site 301003
    Porto Alegre, Brazil
  • Site 301005
    Porto Alegre, Brazil
  • Site 301007
    Porto Alegre, Brazil
  • Site 301016
    Porto Alegre, Brazil
  • Site 301022
    Recife, Brazil
  • Site 301009
    Rio de Janeiro, Brazil
  • Site 301020
    Santo André, Brazil
  • Site 301001
    São José do Rio Preto, Brazil
  • Site 108004
    Batumi, Georgia
  • Site 108005
    Kutaisi, Georgia
  • Site 108011
    Marneuli, Georgia
  • Site 108001
    Tbilisi, Georgia
  • Site 108002
    Tbilisi, Georgia
  • Site 108003
    Tbilisi, Georgia
  • Site 108006
    Tbilisi, Georgia
  • Site 108007
    Tbilisi, Georgia
  • Site 108008
    Tbilisi, Georgia
  • Site 108009
    Tbilisi, Georgia
  • Site 108010
    Tbilisi, Georgia
  • Site 108012
    Tbilisi, Georgia
  • Site 110006
    Athens, Greece
  • Site 110003
    Kifissia, Greece
  • Site 110004
    Larissa, Greece
  • Site 110009
    Pátrai, Greece
  • Site 110001
    Thessaloniki, Greece
  • Site 110002
    Thessaloniki, Greece
  • Site 110005
    Thessaloniki, Greece
  • Site 110008
    Thessaloniki, Greece
  • Site 110010
    Volos, Greece
  • Site 113012
    Brescia, Italy
  • Site 113010
    Cremona, Italy
  • Site 113007
    Genova, Italy
  • Site 113011
    Lecce, Italy
  • Site 113009
    Meldola, Italy
  • Site 113001
    Pavia, Italy
  • Site 113003
    Roma, Italy
  • Site 113006
    Roma, Italy
  • Site 113005
    Siena, Italy
  • Site 113008
    Torino, Italy
  • Site 207002
    Hakodate-shi, Japan
  • Site 207012
    Okayama, Japan
  • Site 207010
    Shinagawa-Ku, Japan
  • Site 207001
    Shizuoka, Japan
  • Site 114001
    Amman, Jordan
  • Site 114002
    Amman, Jordan
  • Site 114003
    Amman, Jordan
  • Site 114004
    Amman, Jordan
  • Site 114005
    Amman, Jordan
  • Site 114007
    Amman, Jordan
  • Site 114006
    Irbid, Jordan
  • Site 202001
    Cheras, Malaysia
  • Site 202002
    Kota Bharu, Malaysia
  • Site 202003
    Kuala Selangor, Malaysia
  • Research site 116001
    Chisinau, Moldova
  • Site 304001
    Panama City, Panama
  • Site 304002
    Panama City, Panama
  • Site 304003
    Panama City, Panama
  • Site 203006
    Bacolod City, Philippines
  • Site 203003
    Baguio City, Philippines
  • Site 203004
    Iloilo City, Philippines
  • Site 203009
    Iloilo City, Philippines
  • Site 203005
    Makati City, Philippines
  • Site 203007
    Manila, Philippines
  • Site 203002
    Quezon City, Philippines
  • Site 118004
    Katowice, Poland
  • Site 118001
    Lodz, Poland
  • Site 118005
    Lublin, Poland
  • Site 118002
    Prabuty, Poland
  • Site 118003
    Słupsk, Poland
  • Site 119001
    Lisbon, Portugal
  • Site 119002
    Matosinhos Municipality, Portugal
  • Site 119003
    Porto, Portugal
  • Site 120001
    Cluj-Napoca, Romania
  • Site 120003
    Craiova, Romania
  • Site 120004
    Craiova, Romania
  • Site 120006
    Floreşti, Romania
  • Site 120005
    Timișoara, Romania
  • Site 121001
    Belgrade, Serbia
  • Site 121002
    Belgrade, Serbia

Showing the first 100 of 173 sites across 24 countries. Choose a country and city above to see the rest.

08

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Sep 10, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT06687369
Responsible party
Sponsor
First posted
Nov 13, 2024
Start date
Dec 30, 2024
Primary completion
Aug 31, 2026 (estimated)
Completion
Sep 2027 (estimated)
Last update
Sep 10, 2026

Oversight

Data monitoring committee
Yes
FDA-regulated drug
Yes
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is active, not recruiting, as verified in Sep 2026. You cannot join it, but the record below documents what was studied.

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Discussion

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