ClinicalTrials.gg
Active, not recruitingNCT03473743Updated Aug 28, 2026Results posted

A Study of Erdafitinib in Participants With Metastatic or Locally Advanced Urothelial Cancer

A Phase 1/2 interventional study of Erdafitinib and Cetrelimab in Urothelial Carcinoma, sponsored by Janssen Research & Development, LLC. Active, not recruiting at 127 sites in 13 countries. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2026-08-28.

Sponsored by Janssen Research & Development, LLC (part of Johnson & Johnson) · Phase 1/2, Interventional, and Treatment

Phase
Phase 1/2
Study type
Interventional
Enrollment
125
Allocation
Randomized
Ages
18 Years and older
Sex
All
01

Study summary

The purpose of this study is to: (a) characterize the safety and tolerability of and to identify the recommended Phase 2 dose (RP2D) and schedule for erdafitinib in combination with cetrelimab, and for erdafitinib in combination with cetrelimab and platinum (cisplatin and carboplatin) chemotherapy and; (b) to evaluate the safety and clinical activity of erdafitinib alone and in combination with cetrelimab in cisplatin-ineligible participants with metastatic or locally advanced urothelial cancer (UC) with select fibroblast growth factor receptor (FGFR) gene alterations and no prior systemic therapy for metastatic disease.

Read the detailed description

This open-label (all people know identity of intervention) and multicenter (when more than one hospital or medical school team work on a medical research study) study to establish the recommended phase 2 dose (RP2D) for erdafitinib and cetrelimab and/or platinum (cisplatin or carboplatin) chemotherapy, and to evaluate the safety of erdafitinib in combination with cetrelimab and platinum chemotherapy in Phase 1b and to evaluate the safety and efficacy of the RP2D of erdafitinib plus cetrelimab versus erdafitinib in Phase 2 in participants with advanced urothelial cancer with select fibroblast growth factor receptor (FGFR) gene alterations. Participants enrolled in Phase 1b erdafitinib + cetrelimab cohort may have received any number of lines of prior therapy, and participants enrolled in Phase 1b erdafitinib + cetrelimab + platinum chemotherapy cohort will have had no prior systemic therapy for metastatic disease and participants enrolled in Phase 2 will have had no prior systemic therapy for metastatic disease and will be cis-ineligible. Part 1 (Phase 1b: Dose Escalation) will identify safety and RP2Ds of erdafitinib + cetrelimab and erdafitinib + cetrelimab + platinum (cisplatin or carboplatin) chemotherapy, and Part 2 (Phase 2: Dose Expansion) will evaluate erdafitinib monotherapy and the RP2D regimen of the erdafitinib + cetrelimab combination to further characterize safety and clinical activity. The study will be conducted in 3 phases: screening phase, treatment phase, and follow-up phase. Study evaluations include efficacy, pharmacokinetics, pharmacodynamics, immunogenicity, biomarkers, and safety.

02

Conditions studied

  • Urothelial Carcinoma
03

In context

Carcinoma, Transitional Cell

633 studies on the registry are indexed under Carcinoma, Transitional Cell; 181 are open to participants now.

This study's enrollment of 125 is above the median of 50 across 500 interventional studies indexed under Carcinoma, Transitional Cell.

Browse Carcinoma, Transitional Cell studies →

Lead sponsor

Janssen Research & Development, LLC is the lead sponsor of 932 studies on the registry; 76 are open to participants now.

Of its 285 completed or terminated interventional studies of FDA-regulated products, 136 (48%) have results posted.

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

  • Histologic demonstration of transitional cell carcinoma of the urothelium. Variant urothelial carcinoma histologies such as glandular or squamous differentiation, or evolution to more aggressive phenotypes such as sarcomatoid or micropapillary change are acceptable
  • or locally advanced urothelial cancer
  • Must have by radiological imaging according to the (RECIST, version 1.1) at baseline
  • Prior systemic therapy for metastatic urothelial cancer: (a) For Phase 1b erdafitinib + cetrelimab cohort: Any number of ; (b) For Phase 1b erdafitinib + cetrelimab + platinum chemotherapy cohort: No prior systemic therapy for metastatic disease; and renal function for participants must have a (CrCl) greater than (>) 30 milliliter per minute (mL/min) to receive carboplatin and >60 mL/min to receive cisplatin as calculated by Cockcroft Gault and (c) Phase 2: No prior systemic therapy for metastatic disease and cisplatin-ineligible based on: PS 0-1 and at least one of the following criteria: Renal function defined as creatinine clearance (CrCl) less than (˂) 60 mL/min as calculated by Cockcroft-Gault; Grade 2 or higher peripheral neuropathy per version 5.0; Grade 2 or higher hearing loss per NCI-CTCAE version 5.0 OR ECOG PS 2
  • Eastern Cooperative Oncology Group (ECOG) performance status (PS) grade of: (a) Phase 1b erdafitinib + cetrelimab cohort: ECOG 0-2; (b) Phase 1b erdafitinib + cetrelimab + platinum chemotherapy cohort: ECOG 0-1 for cisplatin and 0-2 for carboplatin (c) Phase 2: ECOG 0-2

Exclusion criteria

Exclusion Criteria:

  • Treatment with any other agent or participation in another clinical study with therapeutic intent within 30 days prior to Cycle 1 Day 1. For Phase 1b, participants who have received the following prior antitumor therapy: received nitrosoureas and mitomycin C within 6 weeks
  • Phase 1b erdafitinib + cetrelimab cohort: Chemotherapy within 3 weeks of Cycle 1 Day 1; Phase 1b erdafitinib + cetrelimab + platinum chemotherapy cohort and Phase 2: Prior /adjuvant chemotherapy is allowed if the last dose was given >12 months prior to recurrent disease progression and did not result in drug-related toxicity leading to treatment discontinuation
  • Prior anti-programmed death receptor-1 (), anti-programmed death ligand-1 (PD-L1), or anti-programmed death ligand-2 (PD-L2) therapy. Prior neoadjuvant/adjuvant checkpoint inhibitor therapy is allowed if the last dose was given more than (>)12 months prior to recurrent disease progression and did not result in drug-related toxicity leading to treatment discontinuation. PD-1 for non-muscle invasive bladder cancer is also allowed
  • Active requiring concurrent therapy other than urothelial cancer
  • Symptomatic central nervous system
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.

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.

Line of therapy

A line of therapy is one course of treatment, which may combine several drugs. First-line is the first course given; second-line follows when that stops working or is not tolerated.

“Two prior lines” means two courses that count separately under the study’s rules — not simply two drugs. Ask the study team if you are unsure how yours are counted.

Creatinine clearance (CrCl)

How quickly the kidneys clear creatinine, a waste product, from the blood. A study may estimate it from a blood test with age, weight and sex (often by the Cockcroft–Gault formula), or measure it using blood and urine collected over a set time. Given in mL/min; higher is better.

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.

CTCAE grade

The US National Cancer Institute’s scale of how severe an adverse event is — any unwanted medical event during a study, such as a symptom, an illness or an abnormal test result, whether or not a treatment caused it. Whether it did is judged separately.

1
Mild.
2
Moderate.
3
Severe.
4
Life-threatening.
5
Death due to the event.

“Side effects of earlier treatment resolved to grade 1 or less” means they have settled to mild or gone.

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.

Adjuvant and neoadjuvant

Neoadjuvant treatment is given before the main treatment (usually surgery), often to shrink a tumour. Adjuvant treatment is given after it, to lower the chance of the cancer coming back.

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.

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.

05

Study design

Phase
Phase 1 / Phase 2
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Sequential assignment
Masking
None (open label)
Enrollment
125 participants (actual)

Study arms

  • Experimental
    Phase 1b: Dose Escalation

    Two dosing cohorts (erdafitinib and cetrelimab; and erdafitinib, cetrelimab and cisplatin/carboplatin) are explored in Phase 1b of the study. Participants will receive erdafitinib orally followed by cetrelimab intravenously (IV) and carboplatin/cisplatin IV as a part of platinum chemotherapy. The dose levels will be escalated sequentially based on the decisions of the Study Evaluation Team (SET) until the recommended Phase 2 Dose (RP2D) has been identified.

    Drug: Erdafitinib · Drug: Cetrelimab · Drug: Cisplatin · Drug: Carboplatin

  • Experimental
    Phase 2: Dose Expansion

    The participants will be randomized in a 1:1 manner to receive either erdafitinib alone (orally) or the identified RP2D of Phase 1b for erdafitinib (orally) in combination with cetrelimab (IV).

    Drug: Erdafitinib · Drug: Cetrelimab

Interventions

  • Participants will receive erdafitinib orally.

    Also known as: JNJ-42756493

  • Participants will receive cetrelimab by intravenous infusion.

    Also known as: JNJ-63723283

  • Participants will receive cisplatin by intravenous infusion as a part of platinum chemotherapy.

  • Participants will receive carboplatin by intravenous infusion as a part of platinum chemotherapy.

06

What researchers measure

Primary outcomes

  1. Phase 1b: Number of Participants With Dose-Limiting Toxicity (DLTs)

    Number of participants with DLTs were reported. The DLTs as per National Cancer Institute Common Terminology Criteria for Adverse Events Version 5.0 (NCI-CTCAE version 5.0) are specific adverse events defined as grade 3 (severe), grade 4 (life-threatening), and grade 5 (death) non-hematological toxicity or hematological toxicity.

    Time frame: Up to 8 weeks

  2. Phase 2: Objective Response Rate (ORR) Per Response Evaluation Criteria in Solid Tumors (RECIST) 1.1 by Investigator Assessment

    ORR is defined as the percentage of participants who achieved confirmed complete response (CR) or confirmed partial response (PR), according to response evaluation criteria in solid tumors (RECIST) version1.1. As per RECIST version 1.1, CR: disappearance of all lesions; all lymph nodes were non-pathological in size and normalization of tumor marker level; PR: greater than or equal to (\>=) 30 percent (%) decrease in the sum of the diameters of all target lesions compared with baseline, in absence of new lesions or unequivocal progression of nontarget lesions.

    Time frame: From Day 1 up to 36 months

  3. Phase 2: Number of Participants With Treatment-emergent Adverse Event (TEAEs)

    Number of participants with TEAEs were reported. An adverse event is any untoward medical event that occurs in a participant administered an investigational product and it does not necessarily indicate only events with clear causal relationship with the relevant investigational product. TEAEs were defined as adverse events with onset or worsening on or after date of first dose of study treatment.

    Time frame: From Day 1 up to 36 months

Secondary outcomes

  1. Phase 1b and Phase 2: Plasma Concentration of Erdafitinib

    Time frame: Up to 6 years 1 month

  2. Phase 1b and Phase 2: Serum Concentration of Cetrelimab

    Time frame: Up to 6 years 1 month

  3. Phase 1b: Plasma Concentration of Platinum (Cisplatin and Carboplatin) Chemotherapy

    Time frame: Up to 6 years 1 month

  4. Phase 1b and Phase 2: Number of Participants With Anti-Cetrelimab Antibodies

    Time frame: Up to 6 years 1 month

  5. Phase 2: Number of Participants With Serious Adverse Events (SAEs)

    Time frame: Up to 6 years 1 month

  6. Phase 2: Number of Participants With Abnormal Laboratory Values

    Time frame: Up to 6 years 1 month

  7. Phase 2: Duration of Response (DoR)

    Time frame: Up to 6 years 1 month

  8. Phase 2: Time to Response (TTR)

    Time frame: Up to 6 years 1 month

  9. Phase 2: Progression-free Survival (PFS)

    Time frame: Up to 6 years 1 month

  10. Phase 2: Overall Survival (OS)

    Time frame: Up to 6 years 1 month

07

Results

Posted Oct 25, 2023

Participant flow

Participant flow — Overall Study
MilestoneCohort Dose Level (DL) 1 (Phase 1b): Erdafitinib 6 Milligrams (mg) + Cetrelimab 240/480 mgCohort DL2A (Phase 1b): Erdafitinib 8 mg + Cetrelimab 240/480 mgCohort DL2B (Phase 1b): Erdafitinib 8/9 mg + Cetrelimab 240/480 mgCohort DL2 (Phase 1b): Erdafitinib 8/9 mg + Cetrelimab 240/480 mg (RP2D)Cohort DL2C (Phase 1b): Erdafitinib 8 mg + Cetrelimab 360 mg + Cisplatin 50 mg/m^2Cohort DL2D (Phase 1b): Erdafitinib 8 mg + Cetrelimab 360 mg + Carboplatin AUC 4 mg/mL/MinArm A (Phase 2): Erdafitinib 8/9 mg MonotherapyArm B (Phase 2): Erdafitinib 8 mg + Cetrelimab 240/480 mg
Started431112334445
Treated (treated analysis set)431112334344
Completed4353222117
Not completed0069112328
Withdrew: Withdrawal by subject00000003
Withdrew: Other00010000
Withdrew: Ongoing0068112224
Withdrew: Randomized but not treated00000011

Outcome measures

PrimaryPhase 1b: Number of Participants With Dose-Limiting Toxicity (DLTs)

Number of participants with DLTs were reported. The DLTs as per National Cancer Institute Common Terminology Criteria for Adverse Events Version 5.0 (NCI-CTCAE version 5.0) are specific adverse events defined as grade 3 (severe), grade 4 (life-threatening), and grade 5 (death) non-hematological toxicity or hematological toxicity.

Time frame:
Up to 8 weeks
Reported as:
Count of participants · Participants
Phase 1b: Number of Participants With Dose-Limiting Toxicity (DLTs)
ParticipantsCohort Dose Level (DL) 1 (Phase 1b): Erdafitinib 6 Milligrams (mg) + Cetrelimab 240/480 mgCohort DL2A (Phase 1b): Erdafitinib 8 mg + Cetrelimab 240/480 mgCohort DL2B (Phase 1b): Erdafitinib 8/9 mg + Cetrelimab 240/480 mgCohort DL2 (Phase 1b): Erdafitinib 8/9 mg + Cetrelimab 240/480 mg (RP2D)Cohort DL2C (Phase 1b): Erdafitinib 8 mg + Cetrelimab 360 mg + Cisplatin 50 mg/m^2Cohort DL2D (Phase 1b): Erdafitinib 8 mg + Cetrelimab 360 mg + Carboplatin AUC 4 mg/mL/Min
Phase 1b: Number of Participants With Dose-Limiting Toxicity (DLTs)000000
PrimaryPhase 2: Objective Response Rate (ORR) Per Response Evaluation Criteria in Solid Tumors (RECIST) 1.1 by Investigator Assessment

ORR is defined as the percentage of participants who achieved confirmed complete response (CR) or confirmed partial response (PR), according to response evaluation criteria in solid tumors (RECIST) version1.1. As per RECIST version 1.1, CR: disappearance of all lesions; all lymph nodes were non-pathological in size and normalization of tumor marker level; PR: greater than or equal to (\>=) 30 percent (%) decrease in the sum of the diameters of all target lesions compared with baseline, in absence of new lesions or unequivocal progression of nontarget lesions.

Time frame:
From Day 1 up to 36 months
Reported as:
Number · Percentage of Participants
Phase 2: Objective Response Rate (ORR) Per Response Evaluation Criteria in Solid Tumors (RECIST) 1.1 by Investigator Assessment
Percentage of ParticipantsArm A (Phase 2): Erdafitinib 8/9 mg MonotherapyArm B (Phase 2): Erdafitinib 8 mg + Cetrelimab 240/480 mg
Phase 2: Objective Response Rate (ORR) Per Response Evaluation Criteria in Solid Tumors (RECIST) 1.1 by Investigator Assessment44.254.5
PrimaryPhase 2: Number of Participants With Treatment-emergent Adverse Event (TEAEs)

Number of participants with TEAEs were reported. An adverse event is any untoward medical event that occurs in a participant administered an investigational product and it does not necessarily indicate only events with clear causal relationship with the relevant investigational product. TEAEs were defined as adverse events with onset or worsening on or after date of first dose of study treatment.

Time frame:
From Day 1 up to 36 months
Reported as:
Count of participants · Participants
Phase 2: Number of Participants With Treatment-emergent Adverse Event (TEAEs)
ParticipantsArm A (Phase 2): Erdafitinib 8/9 mg MonotherapyArm B (Phase 2): Erdafitinib 8 mg + Cetrelimab 240/480 mg
Phase 2: Number of Participants With Treatment-emergent Adverse Event (TEAEs)4344
SecondaryPhase 1b and Phase 2: Plasma Concentration of Erdafitinib
Time frame:
Up to 6 years 1 month

Results for this outcome have not been posted.

SecondaryPhase 1b and Phase 2: Serum Concentration of Cetrelimab
Time frame:
Up to 6 years 1 month

Results for this outcome have not been posted.

SecondaryPhase 1b: Plasma Concentration of Platinum (Cisplatin and Carboplatin) Chemotherapy
Time frame:
Up to 6 years 1 month

Results for this outcome have not been posted.

SecondaryPhase 1b and Phase 2: Number of Participants With Anti-Cetrelimab Antibodies
Time frame:
Up to 6 years 1 month

Results for this outcome have not been posted.

SecondaryPhase 2: Number of Participants With Serious Adverse Events (SAEs)
Time frame:
Up to 6 years 1 month

Results for this outcome have not been posted.

SecondaryPhase 2: Number of Participants With Abnormal Laboratory Values
Time frame:
Up to 6 years 1 month

Results for this outcome have not been posted.

SecondaryPhase 2: Duration of Response (DoR)
Time frame:
Up to 6 years 1 month

Results for this outcome have not been posted.

SecondaryPhase 2: Time to Response (TTR)
Time frame:
Up to 6 years 1 month

Results for this outcome have not been posted.

SecondaryPhase 2: Progression-free Survival (PFS)
Time frame:
Up to 6 years 1 month

Results for this outcome have not been posted.

SecondaryPhase 2: Overall Survival (OS)
Time frame:
Up to 6 years 1 month

Results for this outcome have not been posted.

Adverse events

Collected over Phase 1b: From Day 1 up to 40 months; Phase 2: From Day 1 up to 36 months. Non-serious events are listed at a 5% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
Cohort Dose Level (DL) 1 (Phase 1b): Erdafitinib 6 Milligrams (mg) + Cetrelimab 240/480 mg4/4 (100%)3/4 (75%)4/4 (100%)
Cohort DL2A (Phase 1b): Erdafitinib 8 mg + Cetrelimab 240/480 mg3/3 (100%)1/3 (33.3%)3/3 (100%)
Cohort DL2B (Phase 1b): Erdafitinib 8/9 mg + Cetrelimab 240/480 mg5/11 (45.5%)4/11 (36.4%)11/11 (100%)
Cohort DL2 (Phase 1b): Erdafitinib 8/9 mg + Cetrelimab 240/480 mg (RP2D)3/12 (25%)6/12 (50%)12/12 (100%)
Cohort DL2C (Phase 1b): Erdafitinib 8 mg + Cetrelimab 360 mg + Cisplatin 50 mg/m^22/3 (66.7%)3/3 (100%)3/3 (100%)
Cohort DL2D (Phase 1b): Erdafitinib 8 mg + Cetrelimab 360 mg + Carboplatin AUC 4 mg/mL/Min2/3 (66.7%)1/3 (33.3%)3/3 (100%)
Arm A (Phase 2): Erdafitinib 8/9 mg Monotherapy21/43 (48.8%)22/43 (51.2%)43/43 (100%)
Arm B (Phase 2): Erdafitinib 8 mg + Cetrelimab 240/480 mg17/44 (38.6%)19/44 (43.2%)43/44 (97.7%)
Most frequent serious events
Showing 10 of 72
Most frequent serious events
EventCohort Dose Level (DL) 1 (Phase 1b): Erdafitinib 6 Milligrams (mg) + Cetrelimab 240/480 mgCohort DL2A (Phase 1b): Erdafitinib 8 mg + Cetrelimab 240/480 mgCohort DL2B (Phase 1b): Erdafitinib 8/9 mg + Cetrelimab 240/480 mgCohort DL2 (Phase 1b): Erdafitinib 8/9 mg + Cetrelimab 240/480 mg (RP2D)Cohort DL2C (Phase 1b): Erdafitinib 8 mg + Cetrelimab 360 mg + Cisplatin 50 mg/m^2Cohort DL2D (Phase 1b): Erdafitinib 8 mg + Cetrelimab 360 mg + Carboplatin AUC 4 mg/mL/MinArm A (Phase 2): Erdafitinib 8/9 mg MonotherapyArm B (Phase 2): Erdafitinib 8 mg + Cetrelimab 240/480 mg
Disseminated Intravascular CoagulationBlood and lymphatic system disorders0/40/30/110/121/30/30/430/44
ThrombocytopeniaBlood and lymphatic system disorders0/40/30/110/121/30/30/430/44
Gastric UlcerGastrointestinal disorders0/40/30/110/121/30/30/430/44
Intestinal MassGastrointestinal disorders0/40/30/110/121/30/30/430/44
Intestinal ObstructionGastrointestinal disorders0/40/30/110/121/30/30/432/44
Large Intestine PerforationGastrointestinal disorders0/40/30/110/121/30/30/430/44
AstheniaGeneral disorders0/40/30/110/121/30/31/430/44
General Physical Health DeteriorationGeneral disorders0/40/31/110/121/30/33/431/44
PeritonitisInfections and infestations0/40/30/110/121/30/30/430/44
PneumoniaInfections and infestations0/40/30/111/120/31/30/431/44
Most frequent other events
Showing 10 of 242
Most frequent other events
EventCohort Dose Level (DL) 1 (Phase 1b): Erdafitinib 6 Milligrams (mg) + Cetrelimab 240/480 mgCohort DL2A (Phase 1b): Erdafitinib 8 mg + Cetrelimab 240/480 mgCohort DL2B (Phase 1b): Erdafitinib 8/9 mg + Cetrelimab 240/480 mgCohort DL2 (Phase 1b): Erdafitinib 8/9 mg + Cetrelimab 240/480 mg (RP2D)Cohort DL2C (Phase 1b): Erdafitinib 8 mg + Cetrelimab 360 mg + Cisplatin 50 mg/m^2Cohort DL2D (Phase 1b): Erdafitinib 8 mg + Cetrelimab 360 mg + Carboplatin AUC 4 mg/mL/MinArm A (Phase 2): Erdafitinib 8/9 mg MonotherapyArm B (Phase 2): Erdafitinib 8 mg + Cetrelimab 240/480 mg
AnaemiaBlood and lymphatic system disorders1/41/32/113/123/32/316/4317/44
StomatitisGastrointestinal disorders3/43/33/119/121/32/331/4326/44
HyperphosphataemiaMetabolism and nutrition disorders1/42/38/1110/123/33/336/4330/44
DiarrhoeaGastrointestinal disorders1/41/39/1110/121/30/321/4320/44
ConstipationGastrointestinal disorders0/42/35/114/120/31/314/437/44
Dry MouthGastrointestinal disorders2/42/36/117/121/32/316/4326/44
VomitingGastrointestinal disorders1/41/32/112/120/32/34/433/44
Aspartate Aminotransferase IncreasedInvestigations0/40/33/112/122/31/310/438/44
Weight DecreasedInvestigations0/42/32/111/120/30/37/438/44
Bone PainMusculoskeletal and connective tissue disorders0/42/30/110/120/30/30/431/44

Baseline characteristics

Safety analysis set was defined as all participants who had received at least one dose of study drug.

Age, Categorical
Age, Categorical(Participants)Cohort Dose Level (DL) 1 (Phase 1b): Erdafitinib 6 Milligrams (mg) + Cetrelimab 240/480 mgCohort DL2A (Phase 1b): Erdafitinib 8 mg + Cetrelimab 240/480 mgCohort DL2B (Phase 1b): Erdafitinib 8/9 mg + Cetrelimab 240/480 mgCohort DL2 (Phase 1b): Erdafitinib 8/9 mg + Cetrelimab 240/480 mg (RP2D)Cohort DL2C (Phase 1b): Erdafitinib 8 mg + Cetrelimab 360 mg + Cisplatin 50 mg/m^2Cohort DL2D (Phase 1b): Erdafitinib 8 mg + Cetrelimab 360 mg + Carboplatin AUC 4 mg/mL/MinArm A (Phase 2): Erdafitinib 8/9 mg MonotherapyArm B (Phase 2): Erdafitinib 8 mg + Cetrelimab 240/480 mgTotal
<=18 years000000000
Between 18 and 65 years117430121341
>=65 years324803313182
Age, Continuous
Age, Continuous(years)Cohort Dose Level (DL) 1 (Phase 1b): Erdafitinib 6 Milligrams (mg) + Cetrelimab 240/480 mgCohort DL2A (Phase 1b): Erdafitinib 8 mg + Cetrelimab 240/480 mgCohort DL2B (Phase 1b): Erdafitinib 8/9 mg + Cetrelimab 240/480 mgCohort DL2 (Phase 1b): Erdafitinib 8/9 mg + Cetrelimab 240/480 mg (RP2D)Cohort DL2C (Phase 1b): Erdafitinib 8 mg + Cetrelimab 360 mg + Cisplatin 50 mg/m^2Cohort DL2D (Phase 1b): Erdafitinib 8 mg + Cetrelimab 360 mg + Carboplatin AUC 4 mg/mL/MinArm A (Phase 2): Erdafitinib 8/9 mg MonotherapyArm B (Phase 2): Erdafitinib 8 mg + Cetrelimab 240/480 mgTotal
Mean72.8 ± 6.566.7 ± 9.0761.3 ± 11.1463.5 ± 11.4160.3 ± 0.5869 ± 3.6171.1 ± 10.1870.2 ± 8.6168.8 ± 9.96
Sex: Female, Male
Sex: Female, Male(Participants)Cohort Dose Level (DL) 1 (Phase 1b): Erdafitinib 6 Milligrams (mg) + Cetrelimab 240/480 mgCohort DL2A (Phase 1b): Erdafitinib 8 mg + Cetrelimab 240/480 mgCohort DL2B (Phase 1b): Erdafitinib 8/9 mg + Cetrelimab 240/480 mgCohort DL2 (Phase 1b): Erdafitinib 8/9 mg + Cetrelimab 240/480 mg (RP2D)Cohort DL2C (Phase 1b): Erdafitinib 8 mg + Cetrelimab 360 mg + Cisplatin 50 mg/m^2Cohort DL2D (Phase 1b): Erdafitinib 8 mg + Cetrelimab 360 mg + Carboplatin AUC 4 mg/mL/MinArm A (Phase 2): Erdafitinib 8/9 mg MonotherapyArm B (Phase 2): Erdafitinib 8 mg + Cetrelimab 240/480 mgTotal
Female012501101130
Male429732333393
Ethnicity (NIH/OMB)
Ethnicity (NIH/OMB)(Participants)Cohort Dose Level (DL) 1 (Phase 1b): Erdafitinib 6 Milligrams (mg) + Cetrelimab 240/480 mgCohort DL2A (Phase 1b): Erdafitinib 8 mg + Cetrelimab 240/480 mgCohort DL2B (Phase 1b): Erdafitinib 8/9 mg + Cetrelimab 240/480 mgCohort DL2 (Phase 1b): Erdafitinib 8/9 mg + Cetrelimab 240/480 mg (RP2D)Cohort DL2C (Phase 1b): Erdafitinib 8 mg + Cetrelimab 360 mg + Cisplatin 50 mg/m^2Cohort DL2D (Phase 1b): Erdafitinib 8 mg + Cetrelimab 360 mg + Carboplatin AUC 4 mg/mL/MinArm A (Phase 2): Erdafitinib 8/9 mg MonotherapyArm B (Phase 2): Erdafitinib 8 mg + Cetrelimab 240/480 mgTotal
Hispanic or Latino010100125
Not Hispanic or Latino40910333937105
Unknown or Not Reported0221003513
Race (NIH/OMB)
Race (NIH/OMB)(Participants)Cohort Dose Level (DL) 1 (Phase 1b): Erdafitinib 6 Milligrams (mg) + Cetrelimab 240/480 mgCohort DL2A (Phase 1b): Erdafitinib 8 mg + Cetrelimab 240/480 mgCohort DL2B (Phase 1b): Erdafitinib 8/9 mg + Cetrelimab 240/480 mgCohort DL2 (Phase 1b): Erdafitinib 8/9 mg + Cetrelimab 240/480 mg (RP2D)Cohort DL2C (Phase 1b): Erdafitinib 8 mg + Cetrelimab 360 mg + Cisplatin 50 mg/m^2Cohort DL2D (Phase 1b): Erdafitinib 8 mg + Cetrelimab 360 mg + Carboplatin AUC 4 mg/mL/MinArm A (Phase 2): Erdafitinib 8/9 mg MonotherapyArm B (Phase 2): Erdafitinib 8 mg + Cetrelimab 240/480 mgTotal
American Indian or Alaska Native000000000
Asian002011329
Native Hawaiian or Other Pacific Islander000000000
Black or African American000000000
White4161122363698
More than one race000000000
Unknown or Not Reported0231004616
Region of Enrollment
Region of Enrollment(Participants)Cohort Dose Level (DL) 1 (Phase 1b): Erdafitinib 6 Milligrams (mg) + Cetrelimab 240/480 mgCohort DL2A (Phase 1b): Erdafitinib 8 mg + Cetrelimab 240/480 mgCohort DL2B (Phase 1b): Erdafitinib 8/9 mg + Cetrelimab 240/480 mgCohort DL2 (Phase 1b): Erdafitinib 8/9 mg + Cetrelimab 240/480 mg (RP2D)Cohort DL2C (Phase 1b): Erdafitinib 8 mg + Cetrelimab 360 mg + Cisplatin 50 mg/m^2Cohort DL2D (Phase 1b): Erdafitinib 8 mg + Cetrelimab 360 mg + Carboplatin AUC 4 mg/mL/MinArm A (Phase 2): Erdafitinib 8/9 mg MonotherapyArm B (Phase 2): Erdafitinib 8 mg + Cetrelimab 240/480 mgTotal
BELARUS0000004610
BELGIUM001001215
BRAZIL000000213
FRANCE0221003412
ITALY001200328
POLAND000000011
RUSSIAN FEDERATION0011218821
SOUTH KOREA002011228
SPAIN2146004825
TAIWAN000000101
TURKEY0000009817
UNITED KINGDOM000000303
UNITED STATES200200239
08

Study locations

127 sites

Showing the first 100 of 127 sites across 13 countries. Choose a country and city above to see the rest.

09

References and documents

Publications

  • Loriot Y, Powles T, Moreno V, Kang TW, Cicin I, Girvin A, Akapame S, O'Hagan A, Zhu W, Tammaro M, Thomas S, Triantos S, Siefker-Radtke AO. Erdafitinib or Erdafitinib Plus Cetrelimab for Patients With Metastatic Urothelial Carcinoma and FGFR Alterations: Final Results From the Phase II NORSE Study. J Clin Oncol. 2026 Mar 10;44(8):676-684. doi: 10.1200/JCO-25-00826. Epub 2026 Jan 15. PubMed 41538748 ↗
  • LaRoche JK, Lanier J, Alvarenga R, Collins M, Costelloe T, Chiau A, Whetherly H, De Soete W, Faludi J, Rens K. Climate footprint of industry-sponsored in-human clinical trials: life cycle assessments of clinical trials spanning multiple phases and disease areas. BMJ Open. 2025 Feb 19;15(2):e085364. doi: 10.1136/bmjopen-2024-085364. PubMed 39971605 ↗

Study documents

PDFs hosted by the registry, ClinicalTrials.gov.

10

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Aug 28, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
11

Registry details

Key details

Study ID
NCT03473743
Responsible party
Sponsor
First posted
Mar 22, 2018
Start date
Apr 5, 2018
Primary completion
Sep 30, 2022
Completion
Dec 31, 2026 (estimated)
Results posted
Oct 25, 2023
Last update
Aug 28, 2026

Study contacts

Janssen Research & Development, LLC Clinical Trial
study director · Janssen Research & Development, LLC

Oversight

Data monitoring committee
No
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 Aug 2026. You cannot join it, but the record below documents what was studied.

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Discussion

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Studies of the drug tested here: Erdafitinib

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