ClinicalTrials.gg
Active, not recruitingNCT05722015Updated Aug 26, 2026Results posted

A Study of Subcutaneous (SC) Pembrolizumab Coformulated With Berahyaluronidase Alfa (MK-3475A) vs Intravenous Pembrolizumab in Adult Participants With Metastatic Non-small Cell Lung Cancer (NSCLC) (MK-3475A-D77)

A Phase 3 interventional study of Pembrolizumab Formulated with Berahyaluronidase Alfa and Pemetrexed in Metastatic Non-small Cell Lung Cancer, sponsored by Merck Sharp & Dohme LLC. Active, not recruiting at 110 sites in 16 countries. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2026-08-26.

Sponsored by Merck Sharp & Dohme LLC (part of Merck & Co., Inc) · Phase 3, Interventional, and Treatment

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Phase
Phase 3
Study type
Interventional
Enrollment
377
Allocation
Randomized
Ages
18 Years and older
Sex
All
01

Where this study stands

Counted across the records on this site · 2026-11-14

Among 91 studies in Carcinoma, Non-Small-Cell Lung by Merck & Co., Inc — 14 open to participants now, 26 under way, 18 of them phase 3. Carcinoma, Non-Small-Cell Lung · Merck & Co., Inc.

Enrollment
31st of 88
377 · median 149
Started
2023
with 7 others
Phase 3
38 of 91
9 open now
Primary completion
2024-07
later than 1 of 25 live
Registered
69th of 91
by date

Among the 91 studies in Carcinoma, Non-Small-Cell Lung by Merck & Co., Inc, this one is the 31st largest by enrollment of the 88 interventional ones that give a count, is one of 8 that started in 2023, is one of 38 in phase 3, reaches primary completion later than 1 of the 25 other live ones, and was the 69th registered.

Carcinoma, Non-Small-Cell Lung

7,624 studies on the registry are indexed under Carcinoma, Non-Small-Cell Lung; 1,837 are open to participants now.

Browse Carcinoma, Non-Small-Cell Lung studies →

Open to participants now

14 of the 91 studies in Carcinoma, Non-Small-Cell Lung by Merck & Co., Inc are open now, in 12 countries. Recruiting first, the newest first:

9 more — sign in →

By country, each count listing its studies:

All 14 open studies →

Who these studies take

Of the 1,326 Carcinoma, Non-Small-Cell Lung studies recruiting now, 988 (75%) set no upper age limit and 225 (17%) stop at 75 or younger; 34 take children under 18; 40 take healthy volunteers.

This study: 18 Years and older · all sexes · no healthy volunteers.

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02

Study summary

This study is to assess the pharmacokinetics (PK) and safety of SC pembrolizumab formulated with berahyaluronidase alfa (MK-3475A) versus (vs) intravenous (IV) pembrolizumab (MK-3475), administered with chemotherapy in first line treatment of adult participants with metastatic non-small cell lung cancer. The primary hypotheses of this study are pembrolizumab formulated with berahyaluronidase alfa subcutaneous (SC) is noninferior to pembrolizumab IV with respect to PK parameters.

Read the detailed description

Effective as of Amendment 4, participants will no longer be able to start a second course of pembrolizumab. Participants already receiving second course treatment at the time of amendment 4 should continue to receive second course treatment.

03

Conditions studied

  • Metastatic Non-small Cell Lung Cancer
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.

The key inclusion and exclusion criteria include but are not limited to the following:

Inclusion criteria

Inclusion Criteria:

  • Has or cytologically confirmed diagnosis of squamous or non-squamous Non-small Cell Lung Cancer (NSCLC)
  • Must provide sample or newly obtained core, incisional, or excisional biopsy of a tumor lesion not previously irradiated
  • Has a of at least 3 months

Exclusion criteria

Exclusion Criteria:

  • Has a diagnosis of small cell lung cancer or, for mixed tumors, presence of small cell elements
  • Has received prior systemic anticancer therapy for NSCLC
  • Has received prior systemic anticancer therapy including agents within 4 weeks before randomization
  • Has received prior radiotherapy within 2 weeks of start of study intervention or has radiation-related toxicity requiring
  • Has received radiation therapy to the lung (>30 Gray) within 6 months of start of study intervention
  • Has received a live or within 30 days before the first dose of study intervention
  • Has a diagnosis of immunodeficiency or is receiving chronic systemic steroid therapy
  • Has a known additional that is progressing or has required active treatment within the past 3 years
  • Has an active disease that has required systemic treatment in past 2 years
  • Has an active infection requiring systemic therapy
  • Has a history of (HIV) infection
  • Has a history of or C
  • Has not adequately recovered from major surgery or has ongoing surgical complications
  • Has a history of allogenic tissue/solid organ transplant
Terms in these criteria, in plain language(11)

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.

Histologically or cytologically confirmed

The diagnosis was confirmed by looking at a sample under a microscope: tissue from a biopsy or surgery (histology), or cells from a fluid or needle sample (cytology).

Your pathology report is the document that shows this.

Biopsy and archival tissue

A biopsy takes a small piece of tissue to examine. “Archival tissue” is a sample already taken, for example at diagnosis, and kept by the hospital.

Whether a stored sample will do depends on when it was taken, how much there is and what the study needs. Ask whether the study accepts your stored sample or needs a new biopsy.

Life expectancy

The study doctor’s estimate of how long someone is likely to live. Criteria use it so that people can stay in the study long enough for it to answer its question.

Metastases

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

Investigational drug or device

A drug or device being studied in a clinical trial.

It may be new, or already approved and being studied for another use, dose or form. Criteria often leave out people who took part in another study of one within a recent period, commonly 30 days or five half-lives.

Corticosteroids (steroids)

Anti-inflammatory medicines such as prednisone, prednisolone and dexamethasone — not the anabolic steroids used for muscle.

Studies differ in what they allow: check which steroid medicines, routes (tablets, injections, creams, inhalers, eye drops) and doses this study accepts.

Live vaccines

Vaccines made with a weakened form of the germ, such as measles–mumps–rubella (MMR), chickenpox and yellow fever. They can be risky when the immune system is weakened. Flu injections are not live; the nasal flu spray is.

Cancer (malignancy)

Malignancy means cancer. Criteria about another or earlier malignancy ask whether you have had a different cancer, usually within a set number of years.

Some are commonly allowed, such as treated skin cancers other than melanoma and early cancers removed completely — check the exceptions this study lists.

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.

HIV

The human immunodeficiency virus, which weakens the immune system.

Many studies now accept people whose HIV is controlled on treatment, judged by the viral load and the CD4 count. Check the limits this study sets.

Hepatitis B tests

Hepatitis B is a virus that infects the liver. These are separate tests: HBsAg positive usually means a current infection (a recent vaccination can briefly cause it too); total anti-HBc (HBcAb) positive means an infection now or in the past; HBV DNA measures how much virus is in the blood.

Some studies accept a past infection if HBV DNA is undetectable, sometimes with antiviral medicine during the study. Check what this study allows.

05

Study design

Phase
Phase 3
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
377 participants (actual)

Study arms

  • Experimental
    Arm 1: Pembrolizumab Formulated With Berahyaluronidase Alfa + Platinum Doublet Chemotherapy

    Participants with treatment-naïve metastatic NSCLC receive 790 mg of Pembrolizumab Formulated With Berahyaluronidase Alfa via subcutaneous (SC) injection on Day 1 of each 6-week cycle for 18 cycles (up to approximately 108 weeks) in combination with platinum doublet chemotherapy.

    Biological: Pembrolizumab Formulated with Berahyaluronidase Alfa · Drug: Pemetrexed · Drug: Cisplatin · Drug: Carboplatin · Drug: Paclitaxel · Drug: Nab-paclitaxel · Drug: Filgrastim · Drug: Pegylated filgrastim

  • Active comparator
    Arm 2: Pembrolizumab + Platinum Doublet Chemotherapy

    Participants with treatment-naïve metastatic NSCLC receive 400 mg pembrolizumab intravenous (IV) infusion in combination with platinum doublet chemotherapy.

    Drug: Pemetrexed · Drug: Cisplatin · Drug: Carboplatin · Drug: Paclitaxel · Drug: Nab-paclitaxel · Biological: Pembrolizumab · Drug: Filgrastim · Drug: Pegylated filgrastim

Interventions

  • BiologicalPembrolizumab Formulated with Berahyaluronidase Alfa

    Pembrolizumab (+) Berahyaluronidase alfa SC will be administered for squamous and nonsquamous NSCLC as per the schedule specified in arm; participants may have been eligible for second course if they met certain protocol-specified criteria prior to study amendment 4.

    Also known as: MK-3475A

  • Pemetrexed 500 mg/m² by IV Infusion will be administered for nonsquamous NSCLC as per the schedule specified in arm.

    Also known as: Alimta

  • Cisplatin 75 mg/m² by IV Infusion will be administered for nonsquamous and squamous NSCLC as per the schedule specified in arm.

    Also known as: Platinol-AQ

  • Carboplatin AUC 5 mg/mL/min in nonsquamous and AUC 6 mg/mL/min in squamous NSCLC will be administered as per the schedule specified in arm.

  • Paclitaxel 200 mg/m² by IV Infusion will be administered for squamous NSCLC as per the schedule specified in arm.

    Also known as: Taxol

  • Nab-paclitaxel 100 mg/m² by IV Infusion will be administered for squamous NSCLC as per the schedule specified in arm.

    Also known as: Albumin-bound paclitaxel

  • BiologicalPembrolizumab

    Pembrolizumab by IV Infusion will be administered for squamous and nonsquamous NSCLC as per the schedule specified in arm; participants may have been eligible for second course if they met certain protocol-specified criteria prior to study amendment 4.

    Also known as: MK-3475, KEYTRUDA

  • Filgrastim will be administered as per the schedule specified for the arm.

  • Pegylated filgrastim will be administered as per the schedule specified for the arm.

06

What researchers measure

Primary outcomes

  1. Cycle 1: Area Under the Curve From Time 0 to 6 Weeks (AUC0-6 Weeks) of Pembrolizumab After the First Dose

    AUC0-6 weeks was defined as a measure of pembrolizumab exposure that was calculated as the product of serum drug concentration and time from zero to 6 weeks. Blood samples were collected at pre-specified timepoints to determine AUC0-6 weeks. Per protocol, geometric mean AUC0-6 weeks value of pembrolizumab after the first dose of pembrolizumab formulated with berahyaluronidase alfa in arm 1 and after first dose of pembrolizumab in arm 2 was presented.

    Time frame: Cycle 1: Arm 1: Day 1: Predose and Days 2, 3, 4, 5, 6, 7, 10, 15, 29, and 42 postdose; Arm 2: Day 1: Predose and at the end of infusion, Days 4, 15, 29, and 42 postdose (cycle length = 42 days)

  2. Cycle 3: Trough Serum Concentration (Ctrough) of Pembrolizumab at Steady State

    Ctrough was defined as the lowest serum concentration of pembrolizumab reached at steady state. Blood samples were collected at pre-specified timepoints for the determination of Ctrough. Per protocol, geometric mean Ctrough value of pembrolizumab at steady state of pembrolizumab formulated with berahyaluronidase alfa in arm 1 and of pembrolizumab in arm 2 was presented.

    Time frame: Cycle 3: Arm 1: Day 1: Predose and Days 4, 10, and 42 postdose; Arm 2: Day 1: Predose and at the end of infusion, Days 4 and 42 postdose (cycle length = 42 days)

Secondary outcomes

  1. Cycle 1: Maximum Serum Concentration (Cmax) of Pembrolizumab After the First Dose

    Cmax was defined as the maximum serum concentration of pembrolizumab reached after first dose. Blood samples were collected at pre-specified timepoints for the determination of Cmax. Per protocol, geometric mean Cmax value of pembrolizumab after the first dose of pembrolizumab formulated with berahyaluronidase alfa in arm 1 and after first dose of pembrolizumab in arm 2 was presented.

    Time frame: Cycle 1: Arm 1: Day 1: Predose and Days 2, 3, 4, 5, 6, 7, 10, 15, 29, and 42 postdose; Arm 2: Day 1: Predose and at the end of infusion, Days 4, 15, 29, and 42 postdose (cycle length = 42 days)

  2. Cycle 1: Trough Serum Concentration (Ctrough) of Pembrolizumab After the First Dose

    Ctrough was defined as the lowest serum concentration of pembrolizumab reached after first dose. Blood samples were collected at pre-specified timepoints for the determination of Ctrough. Per protocol, geometric mean Ctrough value of pembrolizumab after the first dose of pembrolizumab formulated with berahyaluronidase alfa in arm 1 and after first dose of pembrolizumab in arm 2 was presented.

    Time frame: Cycle 1: Arm 1: Day 1: Predose and Days 2, 3, 4, 5, 6, 7, 10, 15, 29, and 42 postdose; Arm 2: Day 1: Predose and at the end of infusion, Days 4, 15, 29, and 42 postdose (cycle length = 42 days)

  3. Cycle 3: Area Under the Curve From Time 0 to 6 Weeks (AUC0-6 Weeks) of Pembrolizumab at Steady State

    AUC0-6 weeks was defined as a measure of pembrolizumab exposure that was calculated as the product of serum drug concentration and time from zero to 6 weeks. Blood samples were collected at pre-specified timepoints to determine AUC0-6 weeks. Per protocol, geometric mean AUC0-6 weeks value of pembrolizumab at steady state of pembrolizumab formulated with berahyaluronidase alfa in arm 1 and pembrolizumab in arm 2 was presented.

    Time frame: Cycle 3: Arm 1: Day 1: Predose and Days 4, 10, and 42 postdose; Arm 2: Day 1: Predose and at the end of infusion, Days 4 and 42 postdose (cycle length = 42 days)

  4. Cycle 3: Maximum Serum Concentration (Cmax) of Pembrolizumab at Steady State

    Cmax was defined as the maximum serum concentration of pembrolizumab reached at steady state. Blood samples were collected at pre-specified timepoints to determine Cmax. Per protocol, geometric mean Cmax value of pembrolizumab at steady state of pembrolizumab formulated with berahyaluronidase alfa in arm 1 and pembrolizumab in arm 2 was presented.

    Time frame: Cycle 3: Arm 1: Day 1: Predose and Days 4, 10, and 42 postdose; Arm 2: Day 1: Predose and at the end of infusion, Days 4 and 42 postdose (cycle length = 42 days)

  5. Number of Participants Who Test Positive for Anti-Drug Antibodies (ADAs) for Pembrolizumab

    Blood samples were collected at designated time points for the determination of the presence or absence of anti-pembrolizumab antibodies. Per protocol, the number of participants who developed anti pembrolizumab antibodies were reported.

    Time frame: Predose and Postdose on Day 1 of Cycles 1 through 18 (up to approximately 28 months). Each cycle is 6 weeks.

  6. Objective Response Rate (ORR)

    ORR was defined as the percentage of participants with Complete Response (CR: disappearance of all target lesions) or Partial Response (PR: at least a 30% decrease in the sum of diameters of target lesions) per Response Evaluation Criteria In Solid Tumors Version 1.1 (RECIST 1.1). The percentage of participants who experienced CR or PR as assessed by Blinded Independent Central Review (BICR) were presented.

    Time frame: Up to approximately 28 months

  7. Progression-free Survival (PFS)

    PFS was defined as the time from randomization to the first documented progressive disease (PD) or death due to any cause, whichever occurs first as assessed by RECIST 1.1. PD is defined as ≥20% increase in the sum of diameters of target lesions. In addition to the relative increase of 20%, the sum must also demonstrate an absolute increase of ≥5 mm. The appearance of one or more new lesions is also considered PD. PFS as assessed by BICR were presented.

    Time frame: Up to approximately 28 months

  8. Overall Survival (OS)

    OS was defined as the time from randomization to death due to any cause.

    Time frame: Up to approximately 28 months

  9. Duration of Response (DOR)

    For participants who demonstrated a confirmed CR (disappearance of all target lesions) or PR (at least a 30% decrease in the sum of diameters of target lesions) per RECIST 1.1, DOR is defined as the time from first documented evidence of CR or PR until PD or death. Per RECIST 1.1, PD is defined as at least a 20% increase in the sum of diameters of target lesions. In addition to the relative increase of 20%, the sum must also demonstrate an absolute increase of at least 5 mm. The appearance of one or more new lesions is also considered PD. DOR as assessed by BICR were presented.

    Time frame: Up to approximately 28 months

  10. Number of Participants Who Experienced at Least One Adverse Event (AE)

    An AE was any untoward medical occurrence in a clinical study participant, temporally associated with the use of study intervention, whether or not considered related to the study intervention. The number of participants who experienced at least one AE were reported .

    Time frame: Up to approximately 28 months

  11. Number of Participants Who Discontinued Study Treatment Due to an Adverse Event (AE)

    An AE is any untoward medical occurrence in a clinical study participant, temporally associated with the use of study intervention, whether or not considered related to the study intervention. The number of participants who discontinue study treatment due to an AE will be reported for Arms 1 and 2.

    Time frame: Up to approximately 28 months

  12. Change From Baseline in European Organization for Research and Treatment (EORTC) Quality of Life Questionnaire-Core30 (QLQ-C30) Combined Global Health Status/Quality of Life (Items 29 & 30) Scale Combined Score

    EORTC QLQ-C30 is a questionnaire to assess the overall quality of life (QoL) of cancer patients. Participant responses to questions regarding Global Health Status (GHS; "How would you rate your overall health during the past week?") and QoL ("How would you rate your overall quality of life during the past week?") are scored on a 7-point scale (1= Very poor to 7=Excellent). The combined score of GHS (Item 29) and QoL (Item 30) is computed by averaging the raw scores of the 2 items and then applying a linear transformation to standardize the average score, so that the combined scores range from 0-100. A higher score indicates a better outcome. Per protocol, the change from baseline in GHS and QoL combined score was presented.

    Time frame: Baseline and Week 24

  13. Change From Baseline in Physical Functioning (EORTC-QLQ-C30 Items 1-5) Score

    EORTC QLQ-C30 is a questionnaire to assess the overall QoL of cancer patients. Participant responses to 5 questions about their physical functioning (Items 1 to 5) are scored on a 4-point scale (1=Not at All to 4=Very Much). The combined score of items 1 to 5 was computed by averaging the raw scores of the 5 items and then applying a linear transformation to standardize the average score, so that the combined scores range from 0-100. A higher score indicates a better outcome. Per protocol, the change from baseline in EORTC QLQ-C30 physical functioning (Items 1-5) combined score was presented.

    Time frame: Baseline and Week 24

  14. Change From Baseline in the European Organization for the Research and Treatment of Cancer (EORTC) Quality of Life Questionnaire C30 (QLQ-C30) Role Functioning Score-Items 6 and 7

    EORTC QLQ-C30 is a questionnaire to assess the overall QoL of cancer patients. Participant responses to the questions "Were you limited in doing either your work or other daily activities during the past week?" and "Were you limited in pursuing your hobbies or other leisure time activities during the past week?" will be scored on a 4-point scale (1=Not at All to 4=Very Much). The combined score of items 1 to 5 was computed by averaging the raw scores of the 2 items and then applying a linear transformation to standardize the average score, so that the combined scores range from 0-100. Higher scores indicate a better level of role functioning. Change from baseline in the EORTC QLQ-C30 role functioning (Items 6-7) combined score was presented.

    Time frame: Baseline and Week 24

07

Results

Posted Jul 28, 2025

Participant flow

Participant flow — Overall Study
MilestoneArm 1: Pembrolizumab Formulated With Berahyaluronidase Alfa + Platinum Doublet ChemotherapyArm 2: Pembrolizumab + Platinum Doublet Chemotherapy
Started251126
Completed00
Not completed251126
Withdrew: Death5737
Withdrew: Lost to follow-up10
Withdrew: Withdrawal by subject51
Withdrew: Participants ongoing18888

Outcome measures

PrimaryCycle 1: Area Under the Curve From Time 0 to 6 Weeks (AUC0-6 Weeks) of Pembrolizumab After the First Dose

AUC0-6 weeks was defined as a measure of pembrolizumab exposure that was calculated as the product of serum drug concentration and time from zero to 6 weeks. Blood samples were collected at pre-specified timepoints to determine AUC0-6 weeks. Per protocol, geometric mean AUC0-6 weeks value of pembrolizumab after the first dose of pembrolizumab formulated with berahyaluronidase alfa in arm 1 and after first dose of pembrolizumab in arm 2 was presented.

Time frame:
Cycle 1: Arm 1: Day 1: Predose and Days 2, 3, 4, 5, 6, 7, 10, 15, 29, and 42 postdose; Arm 2: Day 1: Predose and at the end of infusion, Days 4, 15, 29, and 42 postdose (cycle length = 42 days)
Reported as:
Geometric mean · μg·day/mL
Cycle 1: Area Under the Curve From Time 0 to 6 Weeks (AUC0-6 Weeks) of Pembrolizumab After the First Dose
μg·day/mLArm 1: Pembrolizumab Formulated With Berahyaluronidase Alfa + Platinum Doublet ChemotherapyArm 2: Pembrolizumab + Platinum Doublet Chemotherapy
Cycle 1: Area Under the Curve From Time 0 to 6 Weeks (AUC0-6 Weeks) of Pembrolizumab After the First Dose1633.24 ± 40.411437.58 ± 26.23
Statistical analysis
  • Arm 1: Pembrolizumab Formulated With Berahyaluronidase Alfa + Platinum Doublet Chemotherapy vs Arm 2: Pembrolizumab + Platinum Doublet Chemotherapy · Welch's t test · p = <0.00001 · Geometric mean ratio (gmr): 1.14 · 96% CI 1.06 to 1.22GMR was calculated as the ratio of geometric mean (GM) of Cycle 1 AUC0-6 weeks in Arm 1 to that of Arm 2. The associated 96% confidence interval (CI) were calculated using Welch's t test.
PrimaryCycle 3: Trough Serum Concentration (Ctrough) of Pembrolizumab at Steady State

Ctrough was defined as the lowest serum concentration of pembrolizumab reached at steady state. Blood samples were collected at pre-specified timepoints for the determination of Ctrough. Per protocol, geometric mean Ctrough value of pembrolizumab at steady state of pembrolizumab formulated with berahyaluronidase alfa in arm 1 and of pembrolizumab in arm 2 was presented.

Time frame:
Cycle 3: Arm 1: Day 1: Predose and Days 4, 10, and 42 postdose; Arm 2: Day 1: Predose and at the end of infusion, Days 4 and 42 postdose (cycle length = 42 days)
Reported as:
Geometric mean · μg/mL
Cycle 3: Trough Serum Concentration (Ctrough) of Pembrolizumab at Steady State
μg/mLArm 1: Pembrolizumab Formulated With Berahyaluronidase Alfa + Platinum Doublet ChemotherapyArm 2: Pembrolizumab + Platinum Doublet Chemotherapy
Cycle 3: Trough Serum Concentration (Ctrough) of Pembrolizumab at Steady State39.23 ± 43.2923.49 ± 44.23
Statistical analysis
  • Arm 1: Pembrolizumab Formulated With Berahyaluronidase Alfa + Platinum Doublet Chemotherapy vs Arm 2: Pembrolizumab + Platinum Doublet Chemotherapy · Welch's t test · p = <0.00001 · Gmr: 1.67 · 94% CI 1.52 to 1.84GMR was calculated as the ratio of GM of Cycle 3 Ctrough in Arm 1 to that of Arm 2. The associated 94% CI were calculated using Welch's t test.
SecondaryCycle 1: Maximum Serum Concentration (Cmax) of Pembrolizumab After the First Dose

Cmax was defined as the maximum serum concentration of pembrolizumab reached after first dose. Blood samples were collected at pre-specified timepoints for the determination of Cmax. Per protocol, geometric mean Cmax value of pembrolizumab after the first dose of pembrolizumab formulated with berahyaluronidase alfa in arm 1 and after first dose of pembrolizumab in arm 2 was presented.

Time frame:
Cycle 1: Arm 1: Day 1: Predose and Days 2, 3, 4, 5, 6, 7, 10, 15, 29, and 42 postdose; Arm 2: Day 1: Predose and at the end of infusion, Days 4, 15, 29, and 42 postdose (cycle length = 42 days)
Reported as:
Geometric mean · μg/mL
Cycle 1: Maximum Serum Concentration (Cmax) of Pembrolizumab After the First Dose
μg/mLArm 1: Pembrolizumab Formulated With Berahyaluronidase Alfa + Platinum Doublet ChemotherapyArm 2: Pembrolizumab + Platinum Doublet Chemotherapy
Cycle 1: Maximum Serum Concentration (Cmax) of Pembrolizumab After the First Dose64.88 ± 44129.7 ± 20.8
SecondaryCycle 1: Trough Serum Concentration (Ctrough) of Pembrolizumab After the First Dose

Ctrough was defined as the lowest serum concentration of pembrolizumab reached after first dose. Blood samples were collected at pre-specified timepoints for the determination of Ctrough. Per protocol, geometric mean Ctrough value of pembrolizumab after the first dose of pembrolizumab formulated with berahyaluronidase alfa in arm 1 and after first dose of pembrolizumab in arm 2 was presented.

Time frame:
Cycle 1: Arm 1: Day 1: Predose and Days 2, 3, 4, 5, 6, 7, 10, 15, 29, and 42 postdose; Arm 2: Day 1: Predose and at the end of infusion, Days 4, 15, 29, and 42 postdose (cycle length = 42 days)
Reported as:
Geometric mean · μg/mL
Cycle 1: Trough Serum Concentration (Ctrough) of Pembrolizumab After the First Dose
μg/mLArm 1: Pembrolizumab Formulated With Berahyaluronidase Alfa + Platinum Doublet ChemotherapyArm 2: Pembrolizumab + Platinum Doublet Chemotherapy
Cycle 1: Trough Serum Concentration (Ctrough) of Pembrolizumab After the First Dose19.36 ± 52.212.26 ± 50.8
SecondaryCycle 3: Area Under the Curve From Time 0 to 6 Weeks (AUC0-6 Weeks) of Pembrolizumab at Steady State

AUC0-6 weeks was defined as a measure of pembrolizumab exposure that was calculated as the product of serum drug concentration and time from zero to 6 weeks. Blood samples were collected at pre-specified timepoints to determine AUC0-6 weeks. Per protocol, geometric mean AUC0-6 weeks value of pembrolizumab at steady state of pembrolizumab formulated with berahyaluronidase alfa in arm 1 and pembrolizumab in arm 2 was presented.

Time frame:
Cycle 3: Arm 1: Day 1: Predose and Days 4, 10, and 42 postdose; Arm 2: Day 1: Predose and at the end of infusion, Days 4 and 42 postdose (cycle length = 42 days)
Reported as:
Geometric mean · μg·day/mL
Cycle 3: Area Under the Curve From Time 0 to 6 Weeks (AUC0-6 Weeks) of Pembrolizumab at Steady State
μg·day/mLArm 1: Pembrolizumab Formulated With Berahyaluronidase Alfa + Platinum Doublet ChemotherapyArm 2: Pembrolizumab + Platinum Doublet Chemotherapy
Cycle 3: Area Under the Curve From Time 0 to 6 Weeks (AUC0-6 Weeks) of Pembrolizumab at Steady State2798 ± 35.52122 ± 27.8
SecondaryCycle 3: Maximum Serum Concentration (Cmax) of Pembrolizumab at Steady State

Cmax was defined as the maximum serum concentration of pembrolizumab reached at steady state. Blood samples were collected at pre-specified timepoints to determine Cmax. Per protocol, geometric mean Cmax value of pembrolizumab at steady state of pembrolizumab formulated with berahyaluronidase alfa in arm 1 and pembrolizumab in arm 2 was presented.

Time frame:
Cycle 3: Arm 1: Day 1: Predose and Days 4, 10, and 42 postdose; Arm 2: Day 1: Predose and at the end of infusion, Days 4 and 42 postdose (cycle length = 42 days)
Reported as:
Geometric mean · μg/mL
Cycle 3: Maximum Serum Concentration (Cmax) of Pembrolizumab at Steady State
μg/mLArm 1: Pembrolizumab Formulated With Berahyaluronidase Alfa + Platinum Doublet ChemotherapyArm 2: Pembrolizumab + Platinum Doublet Chemotherapy
Cycle 3: Maximum Serum Concentration (Cmax) of Pembrolizumab at Steady State98.96 ± 36.8148 ± 21.6
SecondaryNumber of Participants Who Test Positive for Anti-Drug Antibodies (ADAs) for Pembrolizumab

Blood samples were collected at designated time points for the determination of the presence or absence of anti-pembrolizumab antibodies. Per protocol, the number of participants who developed anti pembrolizumab antibodies were reported.

Time frame:
Predose and Postdose on Day 1 of Cycles 1 through 18 (up to approximately 28 months). Each cycle is 6 weeks.

Results for this outcome have not been posted.

SecondaryObjective Response Rate (ORR)

ORR was defined as the percentage of participants with Complete Response (CR: disappearance of all target lesions) or Partial Response (PR: at least a 30% decrease in the sum of diameters of target lesions) per Response Evaluation Criteria In Solid Tumors Version 1.1 (RECIST 1.1). The percentage of participants who experienced CR or PR as assessed by Blinded Independent Central Review (BICR) were presented.

Time frame:
Up to approximately 28 months

Results for this outcome have not been posted.

SecondaryProgression-free Survival (PFS)

PFS was defined as the time from randomization to the first documented progressive disease (PD) or death due to any cause, whichever occurs first as assessed by RECIST 1.1. PD is defined as ≥20% increase in the sum of diameters of target lesions. In addition to the relative increase of 20%, the sum must also demonstrate an absolute increase of ≥5 mm. The appearance of one or more new lesions is also considered PD. PFS as assessed by BICR were presented.

Time frame:
Up to approximately 28 months

Results for this outcome have not been posted.

SecondaryOverall Survival (OS)

OS was defined as the time from randomization to death due to any cause.

Time frame:
Up to approximately 28 months

Results for this outcome have not been posted.

SecondaryDuration of Response (DOR)

For participants who demonstrated a confirmed CR (disappearance of all target lesions) or PR (at least a 30% decrease in the sum of diameters of target lesions) per RECIST 1.1, DOR is defined as the time from first documented evidence of CR or PR until PD or death. Per RECIST 1.1, PD is defined as at least a 20% increase in the sum of diameters of target lesions. In addition to the relative increase of 20%, the sum must also demonstrate an absolute increase of at least 5 mm. The appearance of one or more new lesions is also considered PD. DOR as assessed by BICR were presented.

Time frame:
Up to approximately 28 months

Results for this outcome have not been posted.

SecondaryNumber of Participants Who Experienced at Least One Adverse Event (AE)

An AE was any untoward medical occurrence in a clinical study participant, temporally associated with the use of study intervention, whether or not considered related to the study intervention. The number of participants who experienced at least one AE were reported .

Time frame:
Up to approximately 28 months

Results for this outcome have not been posted.

SecondaryNumber of Participants Who Discontinued Study Treatment Due to an Adverse Event (AE)

An AE is any untoward medical occurrence in a clinical study participant, temporally associated with the use of study intervention, whether or not considered related to the study intervention. The number of participants who discontinue study treatment due to an AE will be reported for Arms 1 and 2.

Time frame:
Up to approximately 28 months

Results for this outcome have not been posted.

SecondaryChange From Baseline in European Organization for Research and Treatment (EORTC) Quality of Life Questionnaire-Core30 (QLQ-C30) Combined Global Health Status/Quality of Life (Items 29 & 30) Scale Combined Score

EORTC QLQ-C30 is a questionnaire to assess the overall quality of life (QoL) of cancer patients. Participant responses to questions regarding Global Health Status (GHS; "How would you rate your overall health during the past week?") and QoL ("How would you rate your overall quality of life during the past week?") are scored on a 7-point scale (1= Very poor to 7=Excellent). The combined score of GHS (Item 29) and QoL (Item 30) is computed by averaging the raw scores of the 2 items and then applying a linear transformation to standardize the average score, so that the combined scores range from 0-100. A higher score indicates a better outcome. Per protocol, the change from baseline in GHS and QoL combined score was presented.

Time frame:
Baseline and Week 24

Results for this outcome have not been posted.

SecondaryChange From Baseline in Physical Functioning (EORTC-QLQ-C30 Items 1-5) Score

EORTC QLQ-C30 is a questionnaire to assess the overall QoL of cancer patients. Participant responses to 5 questions about their physical functioning (Items 1 to 5) are scored on a 4-point scale (1=Not at All to 4=Very Much). The combined score of items 1 to 5 was computed by averaging the raw scores of the 5 items and then applying a linear transformation to standardize the average score, so that the combined scores range from 0-100. A higher score indicates a better outcome. Per protocol, the change from baseline in EORTC QLQ-C30 physical functioning (Items 1-5) combined score was presented.

Time frame:
Baseline and Week 24

Results for this outcome have not been posted.

SecondaryChange From Baseline in the European Organization for the Research and Treatment of Cancer (EORTC) Quality of Life Questionnaire C30 (QLQ-C30) Role Functioning Score-Items 6 and 7

EORTC QLQ-C30 is a questionnaire to assess the overall QoL of cancer patients. Participant responses to the questions "Were you limited in doing either your work or other daily activities during the past week?" and "Were you limited in pursuing your hobbies or other leisure time activities during the past week?" will be scored on a 4-point scale (1=Not at All to 4=Very Much). The combined score of items 1 to 5 was computed by averaging the raw scores of the 2 items and then applying a linear transformation to standardize the average score, so that the combined scores range from 0-100. Higher scores indicate a better level of role functioning. Change from baseline in the EORTC QLQ-C30 role functioning (Items 6-7) combined score was presented.

Time frame:
Baseline and Week 24

Results for this outcome have not been posted.

Adverse events

Collected over Up to approximately 16 months. Non-serious events are listed at a 5% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
Arm 1: Pembrolizumab Formulated With Berahyaluronidase Alfa + Platinum Doublet Chemotherapy61/251 (24.3%)98/251 (39%)236/251 (94%)
Arm 2: Pembrolizumab + Platinum Doublet Chemotherapy37/126 (29.4%)51/126 (40.5%)123/126 (97.6%)
Most frequent serious events
Showing 10 of 113
Most frequent serious events
EventArm 1: Pembrolizumab Formulated With Berahyaluronidase Alfa + Platinum Doublet ChemotherapyArm 2: Pembrolizumab + Platinum Doublet Chemotherapy
PneumoniaInfections and infestations25/25113/126
AnaemiaBlood and lymphatic system disorders3/2516/126
Febrile neutropeniaBlood and lymphatic system disorders10/2512/126
ThrombocytopeniaBlood and lymphatic system disorders10/2513/126
NeutropeniaBlood and lymphatic system disorders7/2512/126
Pulmonary embolismRespiratory, thoracic and mediastinal disorders2/2513/126
DeathGeneral disorders4/2511/126
Adrenal insufficiencyEndocrine disorders1/2512/126
FatigueGeneral disorders1/2512/126
Oedema peripheralGeneral disorders0/2512/126
Most frequent other events
Showing 10 of 42
Most frequent other events
EventArm 1: Pembrolizumab Formulated With Berahyaluronidase Alfa + Platinum Doublet ChemotherapyArm 2: Pembrolizumab + Platinum Doublet Chemotherapy
AnaemiaBlood and lymphatic system disorders146/25185/126
NeutropeniaBlood and lymphatic system disorders105/25140/126
LeukopeniaBlood and lymphatic system disorders74/25133/126
ThrombocytopeniaBlood and lymphatic system disorders71/25135/126
NauseaGastrointestinal disorders63/25130/126
Decreased appetiteMetabolism and nutrition disorders28/25127/126
Aspartate aminotransferase increasedInvestigations47/25118/126
ConstipationGastrointestinal disorders35/25123/126
Alanine aminotransferase increasedInvestigations44/25118/126
FatigueGeneral disorders40/25117/126

Baseline characteristics

All randomized participants.

Age, Continuous
Age, Continuous(Years)Arm 1: Pembrolizumab Formulated With Berahyaluronidase Alfa + Platinum Doublet ChemotherapyArm 2: Pembrolizumab + Platinum Doublet ChemotherapyTotal
Mean64.7 ± 9.664.8 ± 8.564.8 ± 9.2
Sex: Female, Male
Sex: Female, Male(Participants)Arm 1: Pembrolizumab Formulated With Berahyaluronidase Alfa + Platinum Doublet ChemotherapyArm 2: Pembrolizumab + Platinum Doublet ChemotherapyTotal
Female6940109
Male18286268
Ethnicity (NIH/OMB)
Ethnicity (NIH/OMB)(Participants)Arm 1: Pembrolizumab Formulated With Berahyaluronidase Alfa + Platinum Doublet ChemotherapyArm 2: Pembrolizumab + Platinum Doublet ChemotherapyTotal
Hispanic or Latino7441115
Not Hispanic or Latino17785262
Unknown or Not Reported000
Race (NIH/OMB)
Race (NIH/OMB)(Participants)Arm 1: Pembrolizumab Formulated With Berahyaluronidase Alfa + Platinum Doublet ChemotherapyArm 2: Pembrolizumab + Platinum Doublet ChemotherapyTotal
American Indian or Alaska Native246
Asian7436110
Native Hawaiian or Other Pacific Islander000
Black or African American5510
White15878236
More than one race12315
Unknown or Not Reported000
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Study locations

110 sites

Showing the first 100 of 110 sites across 16 countries. Choose a country and city above to see the rest.

09

References and documents

Publications

  • Felip E, Rojas CI, Schenker M, Kowalski DM, Casarini IA, Csoszi T, Sendur MAN, Martins J, Calles Blanco A, Wang CC, Wang M, Ramirez Fallas RAL, Yoshioka H, Nair S, Song X, Deng X, Lala M, Eiras R, Takahashi T. Subcutaneous versus intravenous pembrolizumab, in combination with chemotherapy, for treatment of metastatic non-small-cell lung cancer: the phase III 3475A-D77 trial. Ann Oncol. 2025 Jul;36(7):775-785. doi: 10.1016/j.annonc.2025.03.012. Epub 2025 Mar 27. PubMed 40157574 ↗

Study documents

PDFs hosted by the registry, ClinicalTrials.gov.

Individual participant data

Plan to share: Yes — https://trialstransparency.msdclinicaltrials.com/pdf/ProcedureAccessClinicalTrialData.pdf

Data sharing details ↗ · externaldatasharing-msd.com

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Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Ran from Feb 2023 to primary completion in Jul 2024, 16 months.

Results were first posted in Jul 2025, 1 year after primary completion.

Of 315 industry-sponsored phase 3 interventional studies under Carcinoma, Non-Small-Cell Lung, half reached primary completion within 39 months of starting (the median), counting those still running; a quarter within 27 and three quarters within 57. This study's 16 months is below that.

Counting every sponsor, half of 424 studies reached it within 45 months; a quarter within 30 and three quarters within 69.

How these figures are worked out, and which studies are left out of them.

Registered
Jan 27, 2023
First posted
Feb 10, 2023
StartActual
Feb 14, 2023
Primary completionActual
Jul 12, 2024
CompletionEst.
May 22, 2028
Results first posted
Jul 28, 2025
Last update
Aug 26, 2026
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Aug 26, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT05722015
Responsible party
Sponsor
First posted
Feb 10, 2023
Start date
Feb 14, 2023
Primary completion
Jul 12, 2024
Completion
May 22, 2028 (estimated)
Results posted
Jul 28, 2025
Last update
Aug 26, 2026

Study contacts

Medical Director
study director · Merck Sharp & Dohme LLC

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 Jul 2026. You cannot join it, but the record below documents what was studied.

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