A Phase 1 interventional study of Avelumab and M9241 in Advanced Solid Tumors, sponsored by EMD Serono Research & Development Institute, Inc.. Terminated at 33 sites in 7 countries. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2024-09-20.
Sponsored by EMD Serono Research & Development Institute, Inc. · Phase 1, Interventional, and Treatment
The study consisted of 2 parts: Dose Escalation phase (Part A) and Expansion phase (Part B). The dose escalation phase evaluated the safety, tolerability, and PK of avelumab in combination with M9241 in subjects with locally advanced, unresectable, or metastatic solid tumors. Expansion phase assessed the safety and clinical activity of the combination regimen in selected tumor types. In Expansion phase subjects who had completed the combination treatment of avelumab at a given dose level of M9241, a safety review was performed by the Safety monitoring committee in order to make a decision on the next dose level. Successive cohorts of 3 to 6 subjects were treated with escalating doses of M9241 with avelumab intravenous (IV).
EMD Serono Research & Development Institute, Inc. is the lead sponsor of 85 studies on the registry; 8 are open to participants now.
Of its 46 completed or terminated interventional studies of FDA-regulated products, 38 (83%) have results posted.
Counted across the registry records on this site, refreshed daily.
Part A:
adequate hematological function as defined below:
adequate hepatic function as defined below:
Part B:
Exclusion Criteria:
Concurrent treatment with a non-permitted drug/intervention (listed below)
Significant acute or chronic infections requiring systemic therapy including, among others:
History of allergic reaction to methotrexate (trace methotrexate may be present in M9241 as a part of manufacturing process) or history of severe hypersensitivity reaction to any other ingredient of study drug(s) and / or their excipients. Since M9241 contains sucrose as an excipient, participants suffering from hereditary fructose intolerance also excluded - Persisting toxicity related to prior therapy of Grade > 1 NCI-CTCAE v4.03 with the following exceptions:
Uncontrolled intercurrent illness including, but not limited to:
Participants received M9241 at a dose of 4 micrograms per kilogram (mcg/kg) a subcutaneous (SC) injection at time (up to -20 minutes) relative to the start of Avelumab infusion (time 0), once every 4 weeks, on Day 1 in combination with Avelumab 10 milligrams per kilogram (mg/kg) intravenous (IV) infusion every 2 weeks on Day 1 and 15 during each cycle (Each cycle=28 days) until any criterion for treatment discontinuation were met.
Drug: Avelumab · Drug: M9241 · Drug: M9241 (MTD)
Participants received M9241 at a dose of 8 mcg/kg SC injection at time (up to -20 minutes) relative to the start of avelumab infusion (time 0), once every 4 weeks, on Day 1 in combination with Avelumab 10 mg/kg IV infusion every 2 weeks on Day 1 and 15 of each cycle (Each cycle=28 days) until any criterion for treatment discontinuation were met.
Drug: Avelumab · Drug: M9241
Participants received M9241 at a dose of 12 mcg/kg SC injection at time (up to -20 minutes) relative to the start of avelumab infusion (time 0), once every 4 weeks, on Day 1 in combination with Avelumab 10 mg/kg IV infusion every 2 weeks on Day 1 and 15 of each cycle (Each cycle=28 days) until any criterion for treatment discontinuation were met.
Drug: Avelumab · Drug: M9241
Participants received M9241 at a dose of 16.8 mcg/kg SC injection at time (up to -20 minutes) relative to the start of avelumab infusion (time 0), once every 4 weeks, on Day 1 in combination with Avelumab 10 mg/kg IV infusion every 2 weeks on Day 1 and 15 of each cycle (Each cycle=28 days) until any criterion for treatment discontinuation were met.
Drug: Avelumab · Drug: M9241
Participants received M9241 at a dose of 16.8 mcg/kg SC injection at time (up to -20 minutes) relative to the start of avelumab infusion (time 0), once every 4 weeks, on Day 1 in combination with Avelumab 800 milligrams (mg) IV infusion once weekly for the first 12 weeks, then 800 mg once every 2 weeks of each cycle (Each cycle=28 days) until any criterion for treatment discontinuation were met.
Drug: Avelumab (Once weekly)
Participants in the expansion cohorts received M9241 at dose of 16.8 mcg/kg SC injection at time (up to -20 minutes) relative to the start of avelumab infusion (time 0), once every 4 weeks on Day 1 in combination with Avelumab 800 mg IV infusion once weekly for the first 12 weeks, then 800 mg once every 2 weeks of each cycle (Each cycle=28 days) determined as the RP2D in the escalation part of the study.
Drug: Avelumab (Once weekly) · Drug: Avelumab (Expansion cohort)
Participants received avelumab intravenous (IV) infusion once a week on Day 1 and Day 15 of each cycle.
Also known as: MSB0010718C
Participants received Subcutaneous (SC) injection of M9241 in escalating doses on Day 1 of each cycle.
Participants received avelumab once weekly in combination with M9241 every 4 weeks at M9241 maximum tolerated dose (MTD) for first 12 weeks followed by avelumab once every 2 weeks plus M9241 once every 4 weeks at M9241 MTD until a criterion for treatment discontinuation has been met.
Participants received M9241 at M9241 MTD once every 4 weeks until a criterion for treatment discontinuation has been met.
Participants in the expansion cohorts received Induction Therapy (Avelumab once weekly + M9241 once every 4 weeks) through Cycle 3 (for 12 weeks) then starting at Cycle 4, Continuation Therapy (Avelumab once every 2 weeks + M9241 once every 4 weeks).
Part A: Number of Participants With Treatment Emergent Adverse Events (TEAEs) and Treatment-Related TEAEs According to National Cancer Institute-Common Terminology Criteria for Adverse Event (NCI-CTCAE) v4.03
An adverse event (AE) was any untoward medical occurrence in a clinical investigation participant administered a product or medical device; the event needed not necessarily have a causal relationship with the treatment or usage. Serious AE: an AE that resulted in any of the following outcomes: death; life threatening; persistent/significant disability/incapacity; initial or prolonged inpatient hospitalization; congenital anomaly/birth defect or was otherwise considered medically important. TEAE: AE with onset after start of treatment or with onset date before the treatment start date but worsening after the treatment start date. TEAEs included both serious and non-serious TEAEs. Treatment-related TEAEs: reasonably related to the study intervention. Number of participants with TEAEs and treatment related TEAEs were reported.
Time frame: From first dose of study treatment up to 1311 days
Part B: Number of Participants With Treatment Emergent Adverse Events (TEAEs) and Treatment-Related TEAEs According to National Cancer Institute-Common Terminology Criteria for Adverse Event (NCI-CTCAE) v4.03
An adverse event (AE) was any untoward medical occurrence in a clinical investigation participant administered a product or medical device; the event needed not necessarily have a causal relationship with the treatment or usage. Serious AE: an AE that resulted in any of the following outcomes: death; life threatening; persistent/significant disability/incapacity; initial or prolonged inpatient hospitalization; congenital anomaly/birth defect or was otherwise considered medically important. TEAE: AE with onset after start of treatment or with onset date before the treatment start date but worsening after the treatment start date. TEAEs included both serious and non-serious TEAEs. Treatment-related TEAEs: reasonably related to the study intervention. Number of participants with TEAEs and treatment related TEAEs were reported.
Time frame: Part B: From first dose of study treatment up to 443 days
Part A: Number of Participants With Treatment-Related Adverse Events (TRAEs) by Severity Based on Grade 3,4 and 5 According to National Cancer Institute-Common Terminology Criteria for Adverse Events Version 4.03 (NCI-CTCAE v4.03)
AE was any untoward medical occurrence in a participants who received study drug without regard to possibility of causal relationship. An AE was considered treatment emergent if occurred for the first time after the start of study treatment or occurred prior to the start of treatment. Severity of TEAEs were graded using NCI-CTCAE v4.03 toxicity grades, as follows: Grade 3 = Severe; Grade 4 = Life-threatening and Grade 5 = Death. Number of participants with Grade 3,4 and 5 by severity were only reported.
Time frame: From first dose of study treatment up to 1311 days
Part B: Number of Participants With Treatment-Related Adverse Events (TRAEs) by Severity According to National Cancer Institute-Common Terminology Criteria for Adverse Events Version 4.03 (NCI-CTCAE v4.03)
AE was any untoward medical occurrence in a participants who received study drug without regard to possibility of causal relationship. An AE was considered treatment emergent if occurred for the first time after the start of study treatment or occurred prior to the start of treatment. Severity of TEAEs were graded using NCI-CTCAE v4.03 toxicity grades, as follows: Grade 1= Mild; Grade 2 = Moderate; Grade 3 = Severe; Grade 4 = Life-threatening and Grade 5 = Death. Number of participants with TEAEs and TRAEs by severity were reported.
Time frame: First dose of study drug up to 443 days
Part A: Number of Participants Experiencing Dose Limiting Toxicities (DLTs)
A DLT is any Grade (\>=) 3 non-hematologic AE or any Grade (\>=) 4 hematologic AE according to the NCI-CTCAE v4.03, occurring during the DLT observation period that is related to either or both study drugs as determined by the Investigator or Sponsor at any dose and judged not to be related to the underlying disease or any previous or concomitant medication. The following are exceptions to the DLTs: Grade \>=3 thrombocytopenia with medically concerning bleeding; Any Grade 3 autoimmune thyroid-related toxicity that doesn't clinically resolve to \<= Grade 2 within 7 days of initiating therapy will be a DLT. Any Grade 4 neutropenia of \< 5 days duration; Grade 3 infusion-related reaction resolving within 6 hours of infusion; Grade 3 diarrhea or skin toxicity that resolves to Grade \<= 1 within 7 days after medical management; Transient Grade 3 fatigue, local reactions, flu-like symptoms; Tumor flare phenomenon of known or suspected tumor did not consider a DLT.
Time frame: Time from first treatment to final assessment up to 3 weeks
Part B: Number of Participants With Confirmed Best Overall Response (BOR) Assessed by Investigator Using Response Evaluation Criteria in Solid Tumors (RECIST) Version 1.1
Confirmed BOR was defined as the best response of any of the confirmed complete response (CR), confirmed partial response (PR), stable disease (SD) and progressive disease (PD) recorded from the date of randomization until disease progression or recurrence (taking the smallest measurement recorded since the start of treatment as reference).CR: Disappearance of all evidence of target and non-target lesions. PR: At least 30 percent (%) reduction from baseline in the sum of the longest diameter (SLD) of all lesions. Stable disease (SD)= Neither sufficient increase to qualify for progression of disease (PD) nor sufficient shrinkage to qualify for PR. PD: At least a 20 % increase in the SLD, taking as reference the smallest SLD recorded from baseline or the appearance of 1 or more new lesions. Not evaluable (NE): No post-baseline assessment. BOR assessments were assessed by investigators.
Time frame: First dose of study drug up to 443 days
Part A: Area Under Serum Concentration Time Curve From Time Zero to the Time of the Last Observation (AUC0-t) of Avelumab
Area under the serum concentration versus time curve from time zero to the last sampling time t at which concentration is at or above the lower limit of quantification (LLLQ). AUC0-t was calculated according to the mixed log-linear trapezoidal rule.
Time frame: Predose (PrD),1,4,8 hours postdose (PD) on Day 1,22 of Cycle 1 & 2; PrD,1 hour PD on Day 8,15 of Cycle 1 & Day 8,15,22 of Cycle 2; PrD, 1 hour PD on Day 1 Cycle 3 & Day 1,15 of Cycle 4; PrD on Day 1 of Cycle 7,10,13,16,19,22,25, & 28 (Each cycle: 28 days)
Part A: Area Under Serum Concentration Time Curve From Time Zero Extrapolated to Infinity (AUC0-inf) of Avelumab
The AUC(0-inf) was estimated by determining the total area under the curve of the concentration versus time curve extrapolated to infinity.
Time frame: PrD, 1, 4, 8 hours PD on Day 1, 22 of cycle 1 & 2; PrD, 1 hour PD on Day 8, 15 of cycle 1 & Day 8, 15, 22 of cycle 2; PrD, 1 hour PD on Day 1 cycle 3 & Day 1, 15 of cycle 4; PrD on Day 1 of cycle 7, 10,13,16,19,22,25, & 28 (Each cycle: 28 days)
Part A: Terminal Elimination Rate Constant (Lambdaz) of Avelumab
Lambda(z) was determined from the terminal slope of the log-transformed serum concentration curve using linear regression method.
Time frame: PrD, 1, 4, 8 hours PD on Day 1, 22 of cycle 1 & 2; PrD, 1 hour PD on Day 8, 15 of cycle 1 & Day 8, 15, 22 of cycle 2; PrD, 1 hour PD on Day 1 cycle 3 & Day 1, 15 of cycle 4; PrD on Day 1 of cycle 7, 10,13,16,19,22,25, & 28 (Each cycle: 28 days)
Part A: Maximum Observed Serum Concentration (Cmax) of Avelumab
Cmax is the maximum observed serum concentration obtained directly from the concentration versus time curve.
Time frame: PrD, 1, 4, 8 hours PD on Day 1, 22 of cycle 1 & 2; PrD, 1 hour PD on Day 8, 15 of cycle 1 & Day 8, 15, 22 of cycle 2; PrD, 1 hour PD on Day 1 cycle 3 & Day 1, 15 of cycle 4; PrD on Day 1 of cycle 7, 10,13,16,19,22,25, & 28 (Each cycle: 28 days)
Part A: Minimum Observed Serum Concentration (Cmin) of Avelumab
Cmin is minimum observed serum concentration obtained directly from the concentration versus time curve.
Time frame: PrD, 1, 4, 8 hours PD on Day 1, 22 of cycle 1 & 2; PrD, 1 hour PD on Day 8, 15 of cycle 1 & Day 8, 15, 22 of cycle 2; PrD, 1 hour PD on Day 1 cycle 3 & Day 1, 15 of cycle 4; PrD on Day 1 of cycle 7, 10,13,16,19,22,25, & 28 (Each cycle: 28 days)
Part A: Time to Reach Maximum Observed Concentration (Tmax) of Avelumab
Tmax is time to reach maximum observed serum concentration obtained directly from the concentration versus time curve.
Time frame: PrD, 1, 4, 8 hours PD on Day 1, 22 of cycle 1 & 2; PrD, 1 hour PD on Day 8, 15 of cycle 1 & Day 8, 15, 22 of cycle 2; PrD, 1 hour PD on Day 1 cycle 3 & Day 1, 15 of cycle 4; PrD on Day 1 of cycle 7, 10,13,16,19,22,25, & 28 (Each cycle: 28 days)
Part A: Apparent Terminal Half-life (t1/2) of Avelumab
Apparent terminal half-life was defined as the time required for the serum concentration of drug to decrease 50 percent in the final stage of its elimination.
Time frame: PrD, 1, 4, 8 hours PD on Day 1, 22 of cycle 1 & 2; PrD, 1 hour PD on Day 8, 15 of cycle 1 & Day 8, 15, 22 of cycle 2; PrD, 1 hour PD on Day 1 cycle 3 & Day 1, 15 of cycle 4; PrD on Day 1 of cycle 7, 10,13,16,19,22,25, & 28 (Each cycle: 28 days)
Part A: Area Under the Serum Concentration-Time Curve Within One Dosing Interval (AUC0-tau) of Avelumab
AUCtau was defined as concentration of drug over time (the area under the concentration verses time curve over the dosing interval).
Time frame: PrD, 1, 4, 8 hours PD on Day 1, 22 of cycle 1 & 2; PrD, 1 hour PD on Day 8, 15 of cycle 1 & Day 8, 15, 22 of cycle 2; PrD, 1 hour PD on Day 1 cycle 3 & Day 1, 15 of cycle 4; PrD on Day 1 of cycle 7, 10,13,16,19,22,25, & 28 (Each cycle: 28 days)
Part A: Area Under Serum Concentration Time Curve From Time Zero to the Time of the Last Observation (AUC0-t) of M9241
Area under the serum concentration versus time curve from time zero to the last sampling time t at which the concentration is at or above the lower limit of quantification (LLLQ). (AUC0-t) was calculated according to the mixed log-linear trapezoidal rule.
Time frame: PrD, 1, 4, 8 hours PD on Day 1 of cycle 1 and Day 1 of cycle 2; PrD on Day 15 of cycle 1 and cycle 2; PrD, 1hour PD on Day 1 of cycle 3 and cycle 4; PrD on Day 1 Cycle 7, 10, 13, 16, 19, 22, 25, and 28 (Each cycle: 28 days)
Part A: Area Under Serum Concentration Time Curve From Time Zero Extrapolated to Infinity (AUC0-inf) of M9241
The AUC(0-inf) was estimated by determining the total area under the curve of the concentration versus time curve extrapolated to infinity.
Time frame: PrD, 1, 4, 8 hours PD on Day 1 of cycle 1 and Day 1 of cycle 2; PrD on Day 15 of cycle 1 and cycle 2; PrD, 1hour PD on Day 1 of cycle 3 and cycle 4; PrD on Day 1 Cycle 7, 10, 13, 16, 19, 22, 25, and 28 (Each cycle: 28 days)
Part A: Terminal Elimination Rate Constant (Lambdaz) of M9241
Lambda(z) was determined from the terminal slope of the log-transformed serum concentration curve using linear regression method.
Time frame: PrD, 1, 4, 8 hours PD on Day 1 of cycle 1 and Day 1 of cycle 2; PrD on Day 15 of cycle 1 and cycle 2; PrD, 1 hour PD on Day 1 of cycle 3 and cycle 4; PrD on Day 1 Cycle 7, 10, 13, 16, 19, 22, 25, and 28 (Each cycle: 28 days)
Part A: Maximum Observed Serum Concentration (Cmax) of M9241
Cmax is the maximum observed serum concentration obtained directly from the concentration versus time curve.
Time frame: PrD, 1, 4, 8 hours PD on Day 1 of cycle 1 and Day 1 of cycle 2; PrD on Day 15 of cycle 1 and cycle 2; PrD, 1 hour PD on Day 1 of cycle 3 and cycle 4; PrD on Day 1 Cycle 7, 10, 13, 16, 19, 22, 25, and 28 (Each cycle: 28 days)
Part A: Minimum Observed Serum Concentration (Cmin) of M9241
Cmin is minimum observed serum concentration obtained directly from the concentration versus time curve.
Time frame: PrD, 1, 4, 8 hours PD on Day 1 of cycle 1 and Day 1 of cycle 2; PrD on Day 15 of cycle 1 and cycle 2; PrD, 1 hour PD on Day 1 of cycle 3 and cycle 4; PrD on Day 1 Cycle 7, 10, 13, 16, 19, 22, 25, and 28 (Each cycle: 28 days)
Part A: Time to Reach Maximum Observed Concentration (Tmax) of M9241
Tmax is time to reach maximum observed serum concentration obtained directly from the concentration versus time curve.
Time frame: PrD, 1, 4, 8 hours PD on Day 1 of cycle 1 and Day 1 of cycle 2; PrD on Day 15 of cycle 1 and cycle 2; PrD, 1 hour PD on Day 1 of cycle 3 and cycle 4; PrD on Day 1 Cycle 7, 10, 13, 16, 19, 22, 25, and 28 (Each cycle: 28 days)
Part A: Apparent Terminal Half-life (t1/2) of M9241
Apparent terminal half-life was defined as the time required for the serum concentration of drug to decrease 50 percent in the final stage of its elimination.
Time frame: PrD, 1, 4, 8 hours PD on Day 1 of cycle 1 and Day 1 of cycle 2; PrD on Day 15 of cycle 1 and cycle 2; PrD, 1 hour PD on Day 1 of cycle 3 and cycle 4; PrD on Day 1 Cycle 7, 10, 13, 16, 19, 22, 25, and 28 (Each cycle: 28 days)
Part A: Area Under the Serum Concentration-Time Curve Within One Dosing Interval (AUC0-tau) of M9241
AUCtau was defined as concentration of drug over time (the area under the concentration verses time curve over the dosing interval).
Time frame: PrD, 1, 4, 8 hours PD on Day 1 of cycle 1 and Day 1 of cycle 2; PrD on Day 15 of cycle 1 and cycle 2; PrD, 1 hour PD on Day 1 of cycle 3 and cycle 4; PrD on Day 1 Cycle 7, 10, 13, 16, 19, 22, 25, and 28 (Each cycle: 28 days)
Part A: Number of Participants With At Least One Positive Anti-drug Antibodies (ADA) for Avelumab and M9241
ADA category of each participant was classified as pre-existing immunoreactivity (positive ADA response at baseline (prior to treatment), treatment-boosted (positive response at baseline with at least one post baseline titer at \>=8-fold baseline titer), or treatment-emergent (TE \[any positive post baseline assay response when baseline results were negative or missing or not reported\]). TE ADA responses were further classified as persistent (treatment-emergent positive ADA response detected in at least 2 consecutive post baseline samples separated by at least a 16-week post baseline period \[based on nominal sampling time\], with no ADA-negative samples in-between or positive response at last ADA sampling time point) and transient (not persistent/indeterminate, regardless of any missing samples).
Time frame: First dose of study drug up to 1311 days
Part A: Number of Participants With Confirmed Best Overall Response (BOR) According to Response Evaluation Criteria in Solid Tumors Version 1.1
BOR is defined as best response of any of confirmed complete response, confirmed partial response, stable disease and progressive disease recorded from date of randomization until disease progression or recurrence. CR: Disappearance of all evidence of target and non-target lesions. PR: At least 30 percent (%) reduction from baseline in the sum of the longest diameter (SLD) of all lesions. Stable disease (SD)= Neither sufficient increase to qualify for progression of disease (PD) nor sufficient shrinkage to qualify for PR. PD: At least a 20 % increase in the SLD, taking as reference the smallest SLD recorded from baseline or the appearance of 1 or more new lesions. Non-CR/non-PD (for participants with non-measurable disease at baseline) = at least one Non-CR/non-PD assessment (or better) \>= 6 weeks after first study treatment administration and before progression and Not Evaluable: all other cases. BOR assessments were assessed by investigators.
Time frame: First dose of study drug up to 1311 days
Pat A: Number of Participants With Immune-related Best Overall Response (BOR) Using Immune-related Response Criteria Derived From Response Evaluation Criteria in Solid Tumors Version 1.1
BOR: best response of any of immune related complete response (irCR), immune related partial response (irPR), immune related stable disease (irSD) and immune related progressive disease (irPD) recorded from the date of randomization until disease progression or recurrence (taking the smallest measurement recorded since the start of treatment as reference). irCR: Complete disappearance of all tumor lesions (both index and non-index lesions with no new measurable/unmeasurable lesions). irPR: At least 30% reduction from baseline in the sum of the longest diameter (SLD) of all lesions). irSD: SLD of target and new measurable lesions neither irCR, irPR, or irPD. irPD: SLD of target and new measurable lesions increases greater than or equal to \[\>=\] 20%, confirmed by a repeat, consecutive observations at least 4 weeks from the date first documented. Number of participants with immune-related best overall response in each category (irCR, irPR, irSD, irPD) was reported.
Time frame: First dose of study drug up to 1311 days
Part B: Progression Free Survival (PFS) According to Response Evaluation Criteria in Solid Tumors Version 1.1 (RECIST v1.1) Criteria Assessed by Investigator
PFS was defined as the time from first treatment day until date of the first documentation of progressive disease (PD) or death due to any cause, whichever occurs first. PD was defined as at least a 20 percent (%) increase in the sum of longest diameter (SLD), taking as reference the smallest SLD recorded from baseline or the appearance of 1 or more new lesions. PFS was measured using Kaplan-Meier estimates.
Time frame: Time from first dose administration until progressive disease or death, assessed up to 443 days
Part B: Overall Survival (OS) Time
The OS time was defined as the time from treatment day 1 to the date of death due to any cause. The participants who were still alive at the time of data analysis or who were lost to follow-up OS time was censored at the last recorded date that the participant was known to be alive before the data cutoff date. OS was measured using Kaplan-Meier estimates.
Time frame: Time from first dose of study treatment up to 443 days
Part B: Duration of Response (DOR) According to Response Evaluation Criteria in Solid Tumors Version 1.1 (RECIST v1.1) Criteria Assessed by Investigator
DOR according to Response Evaluation Criteria in Solid Tumors version 1.1 (RECIST v1.1) and as assessed by an Investigator was defined as the time from first documentation of objective response (Complete Response \[CR\] or Partial Response \[PR\]) to the date of first documentation of objective progression of disease (PD) or death due to any cause whichever occurs first. CR: Disappearance of all evidence of target and non-target lesions. PR: At least 30% reduction from baseline in the sum of the longest diameter (SLD) of all lesions. PD was defined as at least a 20% increase in the SLD, taking as reference the smallest SLD recorded from baseline or the appearance of 1 or more new lesions. If a participant has not an event (PD or death), DOR was censored at the date of last adequate tumor assessment.
Time frame: Time from first dose of study treatment up to 443 days
Part B: Maximum Observed Serum Concentration (Cmax) of M9241
Cmax is the maximum observed serum concentration obtained directly from the concentration versus time curve.
Time frame: Pre-dose, 1 hour post-dose on Day 1 and Day 29 of Cycle 1 and 2 (Each cycle: 28 days)
Part B: Serum Trough Concentration Levels (Ctrough) of M9241
Ctrough was defined as the trough or minimum serum concentration.
Time frame: Pre-dose, 1 hour post-dose on Day 1 of cycle 2; Day 1, 27 of cycle 3; Day 1 of cycle 5 (Each cycle: 28 days)
Part B: Concentration at the End of Infusion (Ceoi) of Avelumab
Ceoi is the observed serum drug concentration at the end of Intravenous (IV) infusion.
Time frame: Pre-dose, 1 hour post-dose on Day 1 and 15 of Cycle 1 and 2 (Each cycle: 28 days)
Part B: Serum Trough Concentration Levels (Ctrough) of Avelumab
Ctrough was defined as the trough or minimum serum concentration.
Time frame: Pre-dose, 1 hour post-dose on Day 15, 29 and 43
Part B: Number of Participants With At Least One Positive Anti-drug Antibodies (ADA) of Avelumab and M9241
ADA category of each participant was classified as pre-existing immunoreactivity (positive ADA response at baseline (prior to treatment), treatment-boosted (positive response at baseline with at least one post baseline titer at \>=8-fold baseline titer), or treatment-emergent (TE \[any positive post baseline assay response when baseline results were negative or missing or not reported\]). TE ADA responses were further classified as persistent (treatment-emergent positive ADA response detected in at least 2 consecutive post baseline samples separated by at least a 16-week post baseline period \[based on nominal sampling time\], with no ADA-negative samples in-between or positive response at last ADA sampling time point) and transient (not persistent/indeterminate, regardless of any missing samples).
Time frame: Time from first dose of study treatment up to 443 days
The study consisted of 2 parts: Part A (Dose escalation) and Part B (Dose expansion).
| Milestone | Part A Cohort 1: M9241 4 mcg/kg + Avelumab 10 mg/kg (Experimental) | Part A Cohort 2: M9241 8 mcg/kg + Avelumab 10 mg/kg (Experimental) | Part A Cohort 3: M9241 12 mcg/kg + Avelumab 10 mg/kg (Experimental) | Part A Cohort 4: M9241 16.8 mcg/kg +Avelumab 10 mg/kg (Experimental) | Part A Cohort 5: M9241 16.8 mcg/kg + Avelumab 800 mg (Experimental) | Part B Cohort 1: UC Cohort Stage 1 Combination Therapy (Experimental) |
|---|---|---|---|---|---|---|
| Started | 9 | 7 | 7 | 6 | 7 | 16 |
| Completed | 9 | 7 | 7 | 6 | 7 | 16 |
| Not completed | 0 | 0 | 0 | 0 | 0 | 0 |
An adverse event (AE) was any untoward medical occurrence in a clinical investigation participant administered a product or medical device; the event needed not necessarily have a causal relationship with the treatment or usage. Serious AE: an AE that resulted in any of the following outcomes: death; life threatening; persistent/significant disability/incapacity; initial or prolonged inpatient hospitalization; congenital anomaly/birth defect or was otherwise considered medically important. TEAE: AE with onset after start of treatment or with onset date before the treatment start date but worsening after the treatment start date. TEAEs included both serious and non-serious TEAEs. Treatment-related TEAEs: reasonably related to the study intervention. Number of participants with TEAEs and treatment related TEAEs were reported.
| Participants | Part A Cohort 1: M9241 4 mcg/kg + Avelumab 10 mg/kg | Part A Cohort 2: M9241 8 mcg/kg + Avelumab 10 mg/kg | Part A Cohort 3: M9241 12 mcg/kg + Avelumab 10 mg/kg | Part A Cohort 4: M9241 16.8 mcg/kg +Avelumab 10 mg/kg | Part A Cohort 5: M9241 16.8 mcg/kg + Avelumab 800 mg |
|---|---|---|---|---|---|
| Participants with TEAEs | 9 | 7 | 7 | 6 | 7 |
| Participants with Treatment-related-TEAEs | 8 | 5 | 6 | 5 | 6 |
An adverse event (AE) was any untoward medical occurrence in a clinical investigation participant administered a product or medical device; the event needed not necessarily have a causal relationship with the treatment or usage. Serious AE: an AE that resulted in any of the following outcomes: death; life threatening; persistent/significant disability/incapacity; initial or prolonged inpatient hospitalization; congenital anomaly/birth defect or was otherwise considered medically important. TEAE: AE with onset after start of treatment or with onset date before the treatment start date but worsening after the treatment start date. TEAEs included both serious and non-serious TEAEs. Treatment-related TEAEs: reasonably related to the study intervention. Number of participants with TEAEs and treatment related TEAEs were reported.
| Participants | Part B Cohort 1: UC Cohort Stage 1 Combination Therapy (Experimental) |
|---|---|
| Participants with TEAEs | 16 |
| Participants with Treatment-Related AEs | 15 |
AE was any untoward medical occurrence in a participants who received study drug without regard to possibility of causal relationship. An AE was considered treatment emergent if occurred for the first time after the start of study treatment or occurred prior to the start of treatment. Severity of TEAEs were graded using NCI-CTCAE v4.03 toxicity grades, as follows: Grade 3 = Severe; Grade 4 = Life-threatening and Grade 5 = Death. Number of participants with Grade 3,4 and 5 by severity were only reported.
| Participants | Part A Cohort 1: M9241 4 mcg/kg + Avelumab 10 mg/kg | Part A Cohort 2: M9241 8 mcg/kg + Avelumab 10 mg/kg | Part A Cohort 3: M9241 12 mcg/kg + Avelumab 10 mg/kg | Part A Cohort 4: M9241 16.8 mcg/kg +Avelumab 10 mg/kg | Part A Cohort 5: M9241 16.8 mcg/kg + Avelumab 800 mg |
|---|---|---|---|---|---|
| Grade >=3 | 6 | 5 | 6 | 4 | 4 |
| Grade >=4 | 2 | 2 | 2 | 2 | 1 |
| Grade 5 | 0 | 1 | 0 | 1 | 1 |
AE was any untoward medical occurrence in a participants who received study drug without regard to possibility of causal relationship. An AE was considered treatment emergent if occurred for the first time after the start of study treatment or occurred prior to the start of treatment. Severity of TEAEs were graded using NCI-CTCAE v4.03 toxicity grades, as follows: Grade 1= Mild; Grade 2 = Moderate; Grade 3 = Severe; Grade 4 = Life-threatening and Grade 5 = Death. Number of participants with TEAEs and TRAEs by severity were reported.
| Participants | Part B Cohort 1: UC Cohort Stage 1 Combination Therapy (Experimental) |
|---|---|
| Any Grade | 15 |
| Grade >=3 | 8 |
| Grade >=4 | 1 |
| Grade 5 | 0 |
A DLT is any Grade (\>=) 3 non-hematologic AE or any Grade (\>=) 4 hematologic AE according to the NCI-CTCAE v4.03, occurring during the DLT observation period that is related to either or both study drugs as determined by the Investigator or Sponsor at any dose and judged not to be related to the underlying disease or any previous or concomitant medication. The following are exceptions to the DLTs: Grade \>=3 thrombocytopenia with medically concerning bleeding; Any Grade 3 autoimmune thyroid-related toxicity that doesn't clinically resolve to \<= Grade 2 within 7 days of initiating therapy will be a DLT. Any Grade 4 neutropenia of \< 5 days duration; Grade 3 infusion-related reaction resolving within 6 hours of infusion; Grade 3 diarrhea or skin toxicity that resolves to Grade \<= 1 within 7 days after medical management; Transient Grade 3 fatigue, local reactions, flu-like symptoms; Tumor flare phenomenon of known or suspected tumor did not consider a DLT.
| Participants | Part A Cohort 1: M9241 4 mcg/kg + Avelumab 10 mg/kg | Part A Cohort 2: M9241 8 mcg/kg + Avelumab 10 mg/kg | Part A Cohort 3: M9241 12 mcg/kg + Avelumab 10 mg/kg | Part A Cohort 4: M9241 16.8 mcg/kg +Avelumab 10 mg/kg | Part A Cohort 5: M9241 16.8 mcg/kg + Avelumab 800 mg |
|---|---|---|---|---|---|
| Part A: Number of Participants Experiencing Dose Limiting Toxicities (DLTs) | 0 | 0 | 1 | 0 | 0 |
Confirmed BOR was defined as the best response of any of the confirmed complete response (CR), confirmed partial response (PR), stable disease (SD) and progressive disease (PD) recorded from the date of randomization until disease progression or recurrence (taking the smallest measurement recorded since the start of treatment as reference).CR: Disappearance of all evidence of target and non-target lesions. PR: At least 30 percent (%) reduction from baseline in the sum of the longest diameter (SLD) of all lesions. Stable disease (SD)= Neither sufficient increase to qualify for progression of disease (PD) nor sufficient shrinkage to qualify for PR. PD: At least a 20 % increase in the SLD, taking as reference the smallest SLD recorded from baseline or the appearance of 1 or more new lesions. Not evaluable (NE): No post-baseline assessment. BOR assessments were assessed by investigators.
| Participants | Part B Cohort 1: UC Cohort Stage 1 Combination Therapy (Experimental) |
|---|---|
| Complete Response | 0 |
| Partial Response | 0 |
| Stable Disease | 2 |
| Progressive Disease | 13 |
| Not evaluable | 1 |
Area under the serum concentration versus time curve from time zero to the last sampling time t at which concentration is at or above the lower limit of quantification (LLLQ). AUC0-t was calculated according to the mixed log-linear trapezoidal rule.
| microgram*hour per milliliter (mcg*h/mL) | Part A Cohort 1: M9241 4 mcg/kg + Avelumab 10 mg/kg | Part A Cohort 2: M9241 8 mcg/kg + Avelumab 10 mg/kg | Part A Cohort 3: M9241 12 mcg/kg + Avelumab 10 mg/kg | Part A Cohort 4: M9241 16.8 mcg/kg +Avelumab 10 mg/kg | Part A Cohort 5: M9241 16.8 mcg/kg + Avelumab 800 mg |
|---|---|---|---|---|---|
| Cycle 1 Day 1 | 20700 ± 38.1 | 26600 ± 57.9 | 23600 ± 16.6 | 17400 ± 33.4 | 17900 ± 39.7 |
| Cycle 1 Day 15 | 22800 ± 40.5 | 26100 ± 42.5 | 28300 ± 39.4 | 22000 ± 19.2 | — |
| Cycle 1 Day 22 | — | — | — | — | 26300 ± 31.0 |
| Cycle 2 Day 1 | 26400 ± 17.2 | 27900 ± 47.9 | 22700 ± 23.2 | 22700 ± 10.5 | 22100 ± 42.7 |
| Cycle 4 Day 1 | — | — | — | — | NA ± NA |
The AUC(0-inf) was estimated by determining the total area under the curve of the concentration versus time curve extrapolated to infinity.
| microgram*hour per milliliter (mcg*h/mL) | Part A Cohort 1: M9241 4 mcg/kg + Avelumab 10 mg/kg | Part A Cohort 2: M9241 8 mcg/kg + Avelumab 10 mg/kg | Part A Cohort 3: M9241 12 mcg/kg + Avelumab 10 mg/kg | Part A Cohort 4: M9241 16.8 mcg/kg +Avelumab 10 mg/kg | Part A Cohort 5: M9241 16.8 mcg/kg + Avelumab 800 mg |
|---|---|---|---|---|---|
| Cycle 1 Day 1 | 22300 ± 41.5 | 30100 ± 75.8 | 26500 ± 21.5 | 18800 ± 29.5 | 27000 ± 65.0 |
| Cycle 1 Day 15 | 26300 ± 37.2 | 29800 ± 35.7 | 27100 ± 34.5 | 23000 ± 26.0 | — |
| Cycle 1 Day 22 | — | — | — | — | 43400 ± 56.1 |
| Cycle 2 Day 1 | 29800 ± 18.4 | 33100 ± 48.4 | 24300 ± 30.6 | 24400 ± 13.3 | 35100 ± 40.3 |
Lambda(z) was determined from the terminal slope of the log-transformed serum concentration curve using linear regression method.
| One per hour (1/hour) | Part A Cohort 1: M9241 4 mcg/kg + Avelumab 10 mg/kg | Part A Cohort 2: M9241 8 mcg/kg + Avelumab 10 mg/kg | Part A Cohort 3: M9241 12 mcg/kg + Avelumab 10 mg/kg | Part A Cohort 4: M9241 16.8 mcg/kg +Avelumab 10 mg/kg | Part A Cohort 5: M9241 16.8 mcg/kg + Avelumab 800 mg |
|---|---|---|---|---|---|
| Cycle 1 Day 1 | 0.00847 ± 29.6 | 0.00729 ± 48.5 | 0.00756 ± 20.6 | 0.00790 ± 14.4 | 0.00822 ± 37.1 |
| Cycle 1 Day 15 | 0.00780 ± 31.6 | 0.00814 ± 15.7 | 0.00780 ± 31.4 | 0.00803 ± 17.1 | — |
| Cycle 1 Day 22 | — | — | — | — | 0.00620 ± 34.3 |
| Cycle 2 Day 1 | 0.00659 ± 15.7 | 0.00714 ± 39.8 | 0.00868 ± 19.2 | 0.00830 ± 16.4 | 0.00793 ± 35.9 |
Cmax is the maximum observed serum concentration obtained directly from the concentration versus time curve.
| microgram/milliliter (mcg/mL) | Part A Cohort 1: M9241 4 mcg/kg + Avelumab 10 mg/kg | Part A Cohort 2: M9241 8 mcg/kg + Avelumab 10 mg/kg | Part A Cohort 3: M9241 12 mcg/kg + Avelumab 10 mg/kg | Part A Cohort 4: M9241 16.8 mcg/kg +Avelumab 10 mg/kg | Part A Cohort 5: M9241 16.8 mcg/kg + Avelumab 800 mg |
|---|---|---|---|---|---|
| Cycle 1 Day 1 | 241 ± 39.9 | 244 ± 29.9 | 287 ± 36.4 | 156 ± 67.7 | 228 ± 29.3 |
| Cycle 1 Day 15 | 229 ± 54.4 | 250 ± 14.6 | 256 ± 32.0 | 201 ± 25.6 | — |
| Cycle 1 Day 22 | — | — | — | — | 269 ± 44.0 |
| Cycle 2 Day 1 | 213 ± 21.3 | 249 ± 37.5 | 210 ± 19.7 | 200 ± 8.1 | 318 ± 33.5 |
| Cycle 4 Day 1 | — | — | — | — | NA ± NA |
Cmin is minimum observed serum concentration obtained directly from the concentration versus time curve.
| mcg/mL | Part A Cohort 1: M9241 4 mcg/kg + Avelumab 10 mg/kg | Part A Cohort 2: M9241 8 mcg/kg + Avelumab 10 mg/kg | Part A Cohort 3: M9241 12 mcg/kg + Avelumab 10 mg/kg | Part A Cohort 4: M9241 16.8 mcg/kg +Avelumab 10 mg/kg | Part A Cohort 5: M9241 16.8 mcg/kg + Avelumab 800 mg |
|---|---|---|---|---|---|
| Cycle 1 Day 15 | 11.3 ± 90.4 | 14.5 ± 37.2 | 14.0 ± 70.3 | 9.28 ± 51.8 | — |
| Cycle 1 Day 22 | — | — | — | — | 74.1 ± 62.0 |
| Cycle 2 Day 1 | 20.5 ± 37.6 | 24.0 ± 79.9 | 14.4 ± 91.9 | 13.1 ± 24.4 | 59.3 ± 122.5 |
| Cycle 4 Day 1 | — | — | — | — | NA ± NA |
Tmax is time to reach maximum observed serum concentration obtained directly from the concentration versus time curve.
| hours | Part A Cohort 1: M9241 4 mcg/kg + Avelumab 10 mg/kg | Part A Cohort 2: M9241 8 mcg/kg + Avelumab 10 mg/kg | Part A Cohort 3: M9241 12 mcg/kg + Avelumab 10 mg/kg | Part A Cohort 4: M9241 16.8 mcg/kg +Avelumab 10 mg/kg | Part A Cohort 5: M9241 16.8 mcg/kg + Avelumab 800 mg |
|---|---|---|---|---|---|
| Cycle 1 Day 1 | 4.00 (1.00 to 25.08) | 1.05 (1.00 to 9.00) | 3.90 (1.00 to 4.25) | 2.58 (1.00 to 44.78) | 4.00 (1.00 to 22.20) |
| Cycle 1 Day 15 | 5.04 (1.00 to 48.42) | 1.13 (1.00 to 25.72) | 4.00 (1.22 to 49.00) | 4.09 (1.03 to 29.18) | — |
| Cycle 1 Day 22 | — | — | — | — | 4.00 (1.00 to 43.03) |
| Cycle 2 Day 1 | 1.58 (1.13 to 25.00) | 1.17 (1.10 to 4.08) | 23.07 (3.98 to 25.00) | 2.00 (1.00 to 25.35) | 4.00 (1.12 to 9.00) |
| Cycle 4 Day 1 | — | — | — | — | NA (NA to NA) |
Apparent terminal half-life was defined as the time required for the serum concentration of drug to decrease 50 percent in the final stage of its elimination.
| hours | Part A Cohort 1: M9241 4 mcg/kg + Avelumab 10 mg/kg | Part A Cohort 2: M9241 8 mcg/kg + Avelumab 10 mg/kg | Part A Cohort 3: M9241 12 mcg/kg + Avelumab 10 mg/kg | Part A Cohort 4: M9241 16.8 mcg/kg +Avelumab 10 mg/kg | Part A Cohort 5: M9241 16.8 mcg/kg + Avelumab 800 mg |
|---|---|---|---|---|---|
| Cycle 1 Day 1 | 94.7 (48.4 to 108) | 87.4 (50.2 to 223) | 95.2 (70.1 to 123) | 87.1 (69.4 to 106) | 70.5 (60.2 to 148) |
| Cycle 1 Day 15 | 101 (54.9 to 115) | 77.6 (75.0 to 103) | 84.1 (65.0 to 136) | 86.7 (69.9 to 106) | — |
| Cycle 1 Day 22 | — | — | — | — | 102 (83.3 to 180) |
| Cycle 2 Day 1 | 106 (88.5 to 125) | 94.9 (68.6 to 173) | 80.7 (67.5 to 95.1) | 86.2 (67.0 to 98.1) | 81.1 (55.9 to 138) |
AUCtau was defined as concentration of drug over time (the area under the concentration verses time curve over the dosing interval).
| mcg*h/mL | Part A Cohort 1: M9241 4 mcg/kg + Avelumab 10 mg/kg | Part A Cohort 2: M9241 8 mcg/kg + Avelumab 10 mg/kg | Part A Cohort 3: M9241 12 mcg/kg + Avelumab 10 mg/kg | Part A Cohort 4: M9241 16.8 mcg/kg +Avelumab 10 mg/kg | Part A Cohort 5: M9241 16.8 mcg/kg + Avelumab 800 mg |
|---|---|---|---|---|---|
| Cycle 1 Day 1 | 20900 ± 37.6 | 26700 ± 58.3 | 24500 ± 19.2 | 17400 ± 33.1 | 19800 ± 44.7 |
| Cycle 1 Day 15 | 24100 ± 35.0 | 27600 ± 33.1 | 28300 ± 39.4 | 21400 ± 24.2 | — |
| Cycle 1 Day 22 | — | — | — | — | 27500 ± 34.7 |
| Cycle 2 Day 1 | 26400 ± 17.4 | 29500 ± 37.6 | 22900 ± 27.1 | 22800 ± 11.6 | 25500 ± 26.1 |
| Cycle 4 Day 1 | — | — | — | — | NA ± NA |
Area under the serum concentration versus time curve from time zero to the last sampling time t at which the concentration is at or above the lower limit of quantification (LLLQ). (AUC0-t) was calculated according to the mixed log-linear trapezoidal rule.
| nanogram*hour/milliliter (ng*h/mL) | Part A Cohort 1: M9241 4 mcg/kg + Avelumab 10 mg/kg | Part A Cohort 2: M9241 8 mcg/kg + Avelumab 10 mg/kg | Part A Cohort 3: M9241 12 mcg/kg + Avelumab 10 mg/kg | Part A Cohort 4: M9241 16.8 mcg/kg +Avelumab 10 mg/kg | Part A Cohort 5: M9241 16.8 mcg/kg + Avelumab 800 mg |
|---|---|---|---|---|---|
| Cycle 1 Day 1 | 105 ± 114.4 | 421 ± 82.9 | 661 ± 58.2 | 621 ± 96.5 | 873 ± 264.0 |
| Cycle 2 Day 1 | 183 ± 151.7 | 306 ± 132.6 | 184 ± 174.0 | 1250 ± 46.2 | 1060 ± 308.8 |
| Cycle 4 Day 1 | — | — | — | — | NA ± NA |
The AUC(0-inf) was estimated by determining the total area under the curve of the concentration versus time curve extrapolated to infinity.
| ng*h/mL | Part A Cohort 1: M9241 4 mcg/kg + Avelumab 10 mg/kg | Part A Cohort 2: M9241 8 mcg/kg + Avelumab 10 mg/kg | Part A Cohort 3: M9241 12 mcg/kg + Avelumab 10 mg/kg | Part A Cohort 4: M9241 16.8 mcg/kg +Avelumab 10 mg/kg | Part A Cohort 5: M9241 16.8 mcg/kg + Avelumab 800 mg |
|---|---|---|---|---|---|
| Cycle 1 Day 1 | — | NA ± NA | NA ± NA | NA ± NA | 2370 ± 31.5 |
| Cycle 2 Day 1 | — | NA ± NA | — | NA ± NA | 2860 ± 19.9 |
Lambda(z) was determined from the terminal slope of the log-transformed serum concentration curve using linear regression method.
| One per hour (1/hour) | Part A Cohort 1: M9241 4 mcg/kg + Avelumab 10 mg/kg | Part A Cohort 2: M9241 8 mcg/kg + Avelumab 10 mg/kg | Part A Cohort 3: M9241 12 mcg/kg + Avelumab 10 mg/kg | Part A Cohort 4: M9241 16.8 mcg/kg +Avelumab 10 mg/kg | Part A Cohort 5: M9241 16.8 mcg/kg + Avelumab 800 mg |
|---|---|---|---|---|---|
| Cycle 1 Day 1 | — | NA ± NA | NA ± NA | NA ± NA | 0.00451 ± 12.5 |
| Cycle 2 Day 1 | — | NA ± NA | — | NA ± NA | 0.00835 ± 14.0 |
| Cycle 4 Day 1 | — | — | — | — | NA ± NA |
Cmax is the maximum observed serum concentration obtained directly from the concentration versus time curve.
| ng/mL | Part A Cohort 1: M9241 4 mcg/kg + Avelumab 10 mg/kg | Part A Cohort 2: M9241 8 mcg/kg + Avelumab 10 mg/kg | Part A Cohort 3: M9241 12 mcg/kg + Avelumab 10 mg/kg | Part A Cohort 4: M9241 16.8 mcg/kg +Avelumab 10 mg/kg | Part A Cohort 5: M9241 16.8 mcg/kg + Avelumab 800 mg |
|---|---|---|---|---|---|
| Cycle 1 Day 1 | 2.79 ± 79.1 | 4.42 ± 84.9 | 12.6 ± 40.9 | 5.91 ± 54.8 | 6.88 ± 99.6 |
| Cycle 2 Day 1 | 2.68 ± 45.7 | 3.81 ± 39.4 | 4.45 ± 112.8 | 9.42 ± 63.3 | 10.4 ± 134.1 |
| Cycle 4 Day 1 | — | — | — | — | NA ± NA |
Cmin is minimum observed serum concentration obtained directly from the concentration versus time curve.
| ng/mL | Part A Cohort 1: M9241 4 mcg/kg + Avelumab 10 mg/kg | Part A Cohort 2: M9241 8 mcg/kg + Avelumab 10 mg/kg | Part A Cohort 3: M9241 12 mcg/kg + Avelumab 10 mg/kg | Part A Cohort 4: M9241 16.8 mcg/kg +Avelumab 10 mg/kg | Part A Cohort 5: M9241 16.8 mcg/kg + Avelumab 800 mg |
|---|---|---|---|---|---|
| Cycle 2 Day 1 | 0.0 ± 0.0 | 0.0 ± 0.0 | 0.0 ± 0.0 | 0.0 ± 0.0 | 0.0 ± 0.0 |
Tmax is time to reach maximum observed serum concentration obtained directly from the concentration versus time curve.
| hours | Part A Cohort 1: M9241 4 mcg/kg + Avelumab 10 mg/kg | Part A Cohort 2: M9241 8 mcg/kg + Avelumab 10 mg/kg | Part A Cohort 3: M9241 12 mcg/kg + Avelumab 10 mg/kg | Part A Cohort 4: M9241 16.8 mcg/kg +Avelumab 10 mg/kg | Part A Cohort 5: M9241 16.8 mcg/kg + Avelumab 800 mg |
|---|---|---|---|---|---|
| Cycle 1 Day 1 | 25.08 (24.58 to 26.05) | 25.17 (3.17 to 240.73) | 24.11 (9.02 to 42.73) | 36.17 (9.17 to 238.62) | 25.08 (19.03 to 46.40) |
| Cycle 2 Day 1 | 34.28 (9.33 to 44.45) | 25.17 (10.13 to 45.03) | 25.08 (9.27 to 47.88) | 25.43 (10.10 to 94.93) | 25.50 (9.35 to 168.18) |
| Cycle 4 Day 1 | — | — | — | — | NA (NA to NA) |
Apparent terminal half-life was defined as the time required for the serum concentration of drug to decrease 50 percent in the final stage of its elimination.
| hours | Part A Cohort 1: M9241 4 mcg/kg + Avelumab 10 mg/kg | Part A Cohort 2: M9241 8 mcg/kg + Avelumab 10 mg/kg | Part A Cohort 3: M9241 12 mcg/kg + Avelumab 10 mg/kg | Part A Cohort 4: M9241 16.8 mcg/kg +Avelumab 10 mg/kg | Part A Cohort 5: M9241 16.8 mcg/kg + Avelumab 800 mg |
|---|---|---|---|---|---|
| Cycle 1 Day 1 | — | NA (NA to NA) | NA (NA to NA) | NA (NA to NA) | 161 (128 to 169) |
| Cycle 2 Day 1 | — | NA (NA to NA) | — | NA (NA to NA) | 84.4 (71.6 to 94.6) |
AUCtau was defined as concentration of drug over time (the area under the concentration verses time curve over the dosing interval).
| ng*h/mL | Part A Cohort 1: M9241 4 mcg/kg + Avelumab 10 mg/kg | Part A Cohort 2: M9241 8 mcg/kg + Avelumab 10 mg/kg | Part A Cohort 3: M9241 12 mcg/kg + Avelumab 10 mg/kg | Part A Cohort 4: M9241 16.8 mcg/kg +Avelumab 10 mg/kg | Part A Cohort 5: M9241 16.8 mcg/kg + Avelumab 800 mg |
|---|---|---|---|---|---|
| Cycle 1 Day 1 | — | NA ± NA | NA ± NA | 835 ± 64.3 | 2130 ± 35.6 |
| Cycle 2 Day 1 | — | NA ± NA | NA ± NA | NA ± NA | 2390 ± 80.4 |
ADA category of each participant was classified as pre-existing immunoreactivity (positive ADA response at baseline (prior to treatment), treatment-boosted (positive response at baseline with at least one post baseline titer at \>=8-fold baseline titer), or treatment-emergent (TE \[any positive post baseline assay response when baseline results were negative or missing or not reported\]). TE ADA responses were further classified as persistent (treatment-emergent positive ADA response detected in at least 2 consecutive post baseline samples separated by at least a 16-week post baseline period \[based on nominal sampling time\], with no ADA-negative samples in-between or positive response at last ADA sampling time point) and transient (not persistent/indeterminate, regardless of any missing samples).
| Participants | Part A Cohort 1: M9241 4 mcg/kg + Avelumab 10 mg/kg | Part A Cohort 2: M9241 8 mcg/kg + Avelumab 10 mg/kg | Part A Cohort 3: M9241 12 mcg/kg + Avelumab 10 mg/kg | Part A Cohort 4: M9241 16.8 mcg/kg +Avelumab 10 mg/kg | Part A Cohort 5: M9241 16.8 mcg/kg + Avelumab 800 mg |
|---|---|---|---|---|---|
| Avelumab: ADA pre-existing | 0 | 0 | 0 | 0 | 1 |
| Avelumab: ADA Treatment boosted | 0 | 0 | 0 | 0 | 0 |
| Avelumab: Treatment-Emergent Transient positive | 0 | 0 | 1 | 1 | 0 |
| Avelumab: Treatment-Emergent Persistent Positive | 0 | 1 | 1 | 0 | 1 |
| M9241: ADA pre-existing | 0 | 0 | 0 | 0 | 0 |
| M9241: ADA Treatment boosted | 0 | 0 | 0 | 0 | 0 |
| M9241: Treatment-Emergent Transient Positive | 0 | 0 | 0 | 0 | 0 |
| M9241: Treatment-Emergent Persistent Positive | 0 | 0 | 0 | 0 | 1 |
BOR is defined as best response of any of confirmed complete response, confirmed partial response, stable disease and progressive disease recorded from date of randomization until disease progression or recurrence. CR: Disappearance of all evidence of target and non-target lesions. PR: At least 30 percent (%) reduction from baseline in the sum of the longest diameter (SLD) of all lesions. Stable disease (SD)= Neither sufficient increase to qualify for progression of disease (PD) nor sufficient shrinkage to qualify for PR. PD: At least a 20 % increase in the SLD, taking as reference the smallest SLD recorded from baseline or the appearance of 1 or more new lesions. Non-CR/non-PD (for participants with non-measurable disease at baseline) = at least one Non-CR/non-PD assessment (or better) \>= 6 weeks after first study treatment administration and before progression and Not Evaluable: all other cases. BOR assessments were assessed by investigators.
| Participants | Part A Cohort 1: M9241 4 mcg/kg + Avelumab 10 mg/kg | Part A Cohort 2: M9241 8 mcg/kg + Avelumab 10 mg/kg | Part A Cohort 3: M9241 12 mcg/kg + Avelumab 10 mg/kg | Part A Cohort 4: M9241 16.8 mcg/kg +Avelumab 10 mg/kg | Part A Cohort 5: M9241 16.8 mcg/kg + Avelumab 800 mg |
|---|---|---|---|---|---|
| Complete Response (CR) | 0 | 1 | 0 | 1 | 0 |
| Partial Response (PR) | 0 | 0 | 0 | 0 | 0 |
| Stable Disease (SD) | 2 | 2 | 2 | 1 | 2 |
| Progressive Disease (PD) | 6 | 3 | 4 | 2 | 5 |
| Non CR/Non PD | 0 | 0 | 0 | 0 | 0 |
| Not Evaluable | 1 | 1 | 1 | 2 | 0 |
BOR: best response of any of immune related complete response (irCR), immune related partial response (irPR), immune related stable disease (irSD) and immune related progressive disease (irPD) recorded from the date of randomization until disease progression or recurrence (taking the smallest measurement recorded since the start of treatment as reference). irCR: Complete disappearance of all tumor lesions (both index and non-index lesions with no new measurable/unmeasurable lesions). irPR: At least 30% reduction from baseline in the sum of the longest diameter (SLD) of all lesions). irSD: SLD of target and new measurable lesions neither irCR, irPR, or irPD. irPD: SLD of target and new measurable lesions increases greater than or equal to \[\>=\] 20%, confirmed by a repeat, consecutive observations at least 4 weeks from the date first documented. Number of participants with immune-related best overall response in each category (irCR, irPR, irSD, irPD) was reported.
| Participants | Part A Cohort 1: M9241 4 mcg/kg + Avelumab 10 mg/kg | Part A Cohort 2: M9241 8 mcg/kg + Avelumab 10 mg/kg | Part A Cohort 3: M9241 12 mcg/kg + Avelumab 10 mg/kg | Part A Cohort 4: M9241 16.8 mcg/kg +Avelumab 10 mg/kg | Part A Cohort 5: M9241 16.8 mcg/kg + Avelumab 800 mg |
|---|---|---|---|---|---|
| Immune-Related Complete Response (irCR) | 0 | 1 | 0 | 1 | 0 |
| Immune-Related Partial Response (irPR) | 0 | 0 | 0 | 0 | 0 |
| Immune-Related Stable Disease (irSD) | 2 | 2 | 2 | 3 | 3 |
| Immune-Related Progressive Disease (irPD) | 0 | 0 | 0 | 0 | 2 |
| Not evaluable (NE) | 7 | 4 | 5 | 2 | 2 |
PFS was defined as the time from first treatment day until date of the first documentation of progressive disease (PD) or death due to any cause, whichever occurs first. PD was defined as at least a 20 percent (%) increase in the sum of longest diameter (SLD), taking as reference the smallest SLD recorded from baseline or the appearance of 1 or more new lesions. PFS was measured using Kaplan-Meier estimates.
| weeks | Part B Cohort 1: UC Cohort Stage 1 Combination Therapy (Experimental) |
|---|---|
| Part B: Progression Free Survival (PFS) According to Response Evaluation Criteria in Solid Tumors Version 1.1 (RECIST v1.1) Criteria Assessed by Investigator | 7.6 ± 7.1 |
The OS time was defined as the time from treatment day 1 to the date of death due to any cause. The participants who were still alive at the time of data analysis or who were lost to follow-up OS time was censored at the last recorded date that the participant was known to be alive before the data cutoff date. OS was measured using Kaplan-Meier estimates.
| months | Part B Cohort 1: UC Cohort Stage 1 Combination Therapy (Experimental) |
|---|---|
| Part B: Overall Survival (OS) Time | 4.9 ± 2.3 |
DOR according to Response Evaluation Criteria in Solid Tumors version 1.1 (RECIST v1.1) and as assessed by an Investigator was defined as the time from first documentation of objective response (Complete Response \[CR\] or Partial Response \[PR\]) to the date of first documentation of objective progression of disease (PD) or death due to any cause whichever occurs first. CR: Disappearance of all evidence of target and non-target lesions. PR: At least 30% reduction from baseline in the sum of the longest diameter (SLD) of all lesions. PD was defined as at least a 20% increase in the SLD, taking as reference the smallest SLD recorded from baseline or the appearance of 1 or more new lesions. If a participant has not an event (PD or death), DOR was censored at the date of last adequate tumor assessment.
No measurements were reported for this outcome.
Cmax is the maximum observed serum concentration obtained directly from the concentration versus time curve.
| ng/mL | Part B Cohort 1: UC Cohort Stage 1 Combination Therapy (Experimental) |
|---|---|
| Day 1 | 6.95 ± 59.6 |
| Day 29 | 7.62 ± 113.0 |
Ctrough was defined as the trough or minimum serum concentration.
| ng/mL | Part B Cohort 1: UC Cohort Stage 1 Combination Therapy (Experimental) |
|---|---|
| Day 29 | 0 ± 0 |
| Day 57 | 0 ± 0 |
| Day 83 | NA ± NA |
| Day 113 | NA ± NA |
Ceoi is the observed serum drug concentration at the end of Intravenous (IV) infusion.
| mcg/mL | Part B Cohort 1: UC Cohort Stage 1 Combination Therapy (Experimental) |
|---|---|
| Day 1 | 199 ± 22.0 |
| Day 15 | 220 ± 37.9 |
| Day 29 | 272 ± 59.6 |
| Day 43 | 253 ± 40.0 |
Ctrough was defined as the trough or minimum serum concentration.
| mcg/mL | Part B Cohort 1: UC Cohort Stage 1 Combination Therapy (Experimental) |
|---|---|
| Day 15 | 54.2 ± 64.9 |
| Day 29 | 53.9 ± 217.5 |
| Day 43 | 44.6 ± 101.8 |
ADA category of each participant was classified as pre-existing immunoreactivity (positive ADA response at baseline (prior to treatment), treatment-boosted (positive response at baseline with at least one post baseline titer at \>=8-fold baseline titer), or treatment-emergent (TE \[any positive post baseline assay response when baseline results were negative or missing or not reported\]). TE ADA responses were further classified as persistent (treatment-emergent positive ADA response detected in at least 2 consecutive post baseline samples separated by at least a 16-week post baseline period \[based on nominal sampling time\], with no ADA-negative samples in-between or positive response at last ADA sampling time point) and transient (not persistent/indeterminate, regardless of any missing samples).
| Participants | Part B Cohort 1: UC Cohort Stage 1 Combination Therapy (Experimental) |
|---|---|
| Avelumab: ADA pre-existing | 0 |
| Avelumab: ADA treatment boosted | 0 |
| Avelumab: Treatment-Emergent Transient Positive | 0 |
| Avelumab: Treatment-Emergent Persistent Positive | 1 |
| M9241: ADA pre-existing | 0 |
| M9241: ADA treatment boosted | 0 |
| M9241: Treatment-Emergent Transient Positive | 1 |
| M9241: Treatment-Emergent Persistent Positive | 0 |
Collected over Part A: Baseline up to 1311 days Part B: Baseline up to 443 days. Non-serious events are listed at a 5% frequency threshold.
| Group | Deaths | Serious | Other |
|---|---|---|---|
| Part A Cohort 1: M9241 4 mcg/kg + Avelumab 10 mg/kg (Experimental) | 9/9 (100%) | 4/9 (44.4%) | 9/9 (100%) |
| Part A Cohort 2: M9241 8 mcg/kg +Avelumab 10 mg/kg | 5/7 (71.4%) | 4/7 (57.1%) | 7/7 (100%) |
| Part A Cohort 3: M9241 12 mcg/kg +Avelumab 10 mg/kg | 6/7 (85.7%) | 3/7 (42.9%) | 7/7 (100%) |
| Part A Cohort 4: M9241 16.8 mcg/kg +Avelumab 10 mg/kg | 5/6 (83.3%) | 3/6 (50%) | 6/6 (100%) |
| Part A Cohort 5: M9241 16.8 mcg/kg +Avelumab 800 mg | 7/7 (100%) | 4/7 (57.1%) | 7/7 (100%) |
| Part B Cohort 1: UC Cohort Stage 1 Combination Therapy (Experimental) | 12/16 (75%) | 12/16 (75%) | 16/16 (100%) |
| Event | Part A Cohort 1: M9241 4 mcg/kg + Avelumab 10 mg/kg (Experimental) | Part A Cohort 2: M9241 8 mcg/kg +Avelumab 10 mg/kg | Part A Cohort 3: M9241 12 mcg/kg +Avelumab 10 mg/kg | Part A Cohort 4: M9241 16.8 mcg/kg +Avelumab 10 mg/kg | Part A Cohort 5: M9241 16.8 mcg/kg +Avelumab 800 mg | Part B Cohort 1: UC Cohort Stage 1 Combination Therapy (Experimental) |
|---|---|---|---|---|---|---|
| Disease progressionGeneral disorders | 0/9 | 1/7 | 0/7 | 1/6 | 1/7 | 4/16 |
| PyrexiaGeneral disorders | 0/9 | 0/7 | 0/7 | 0/6 | 0/7 | 3/16 |
| Large intestinal obstructionGastrointestinal disorders | 0/9 | 0/7 | 0/7 | 1/6 | 0/7 | 0/16 |
| Cytokine release syndromeImmune system disorders | 0/9 | 0/7 | 0/7 | 1/6 | 0/7 | 0/16 |
| Device related infectionInfections and infestations | 0/9 | 0/7 | 0/7 | 1/6 | 0/7 | 0/16 |
| AnaemiaBlood and lymphatic system disorders | 0/9 | 0/7 | 0/7 | 0/6 | 1/7 | 1/16 |
| Autoimmune haemolytic anaemiaBlood and lymphatic system disorders | 0/9 | 0/7 | 0/7 | 0/6 | 1/7 | 0/16 |
| Retroperitoneal haemorrhageGastrointestinal disorders | 0/9 | 1/7 | 0/7 | 0/6 | 0/7 | 0/16 |
| Gallbladder obstructionHepatobiliary disorders | 0/9 | 0/7 | 0/7 | 0/6 | 1/7 | 0/16 |
| Immune-mediated hepatitisHepatobiliary disorders | 0/9 | 0/7 | 1/7 | 0/6 | 0/7 | 0/16 |
| Event | Part A Cohort 1: M9241 4 mcg/kg + Avelumab 10 mg/kg (Experimental) | Part A Cohort 2: M9241 8 mcg/kg +Avelumab 10 mg/kg | Part A Cohort 3: M9241 12 mcg/kg +Avelumab 10 mg/kg | Part A Cohort 4: M9241 16.8 mcg/kg +Avelumab 10 mg/kg | Part A Cohort 5: M9241 16.8 mcg/kg +Avelumab 800 mg | Part B Cohort 1: UC Cohort Stage 1 Combination Therapy (Experimental) |
|---|---|---|---|---|---|---|
| FatigueGeneral disorders | 7/9 | 3/7 | 4/7 | 2/6 | 4/7 | 0/16 |
| AnaemiaBlood and lymphatic system disorders | 3/9 | 4/7 | 5/7 | 4/6 | 3/7 | 8/16 |
| NauseaGastrointestinal disorders | 1/9 | 2/7 | 2/7 | 4/6 | 5/7 | 7/16 |
| PyrexiaGeneral disorders | 6/9 | 5/7 | 3/7 | 4/6 | 4/7 | 10/16 |
| Lymphocyte count decreasedInvestigations | 4/9 | 4/7 | 3/7 | 4/6 | 3/7 | 0/16 |
| Influenza like illnessGeneral disorders | 4/9 | 4/7 | 2/7 | 3/6 | 0/7 | 0/16 |
| Decreased appetiteMetabolism and nutrition disorders | 1/9 | 2/7 | 1/7 | 3/6 | 4/7 | 4/16 |
| HypophosphataemiaMetabolism and nutrition disorders | 0/9 | 0/7 | 1/7 | 2/6 | 4/7 | 1/16 |
| VomitingGastrointestinal disorders | 2/9 | 2/7 | 0/7 | 3/6 | 2/7 | 4/16 |
| Blood creatinine increasedInvestigations | 0/9 | 1/7 | 1/7 | 3/6 | 0/7 | 0/16 |
| Age, Categorical(Participants) | Part A Cohort 1: M9241 4 mcg/kg + Avelumab 10 mg/kg (Experimental) | Part A Cohort 2: M9241 8 mcg/kg + Avelumab 10 mg/kg (Experimental) | Part A Cohort 3: M9241 12 mcg/kg + Avelumab 10 mg/kg (Experimental) | Part A Cohort 4: M9241 16.8 mcg/kg +Avelumab 10 mg/kg (Experimental) | Part A Cohort 5: M9241 16.8 mcg/kg + Avelumab 800 mg (Experimental) | Part B Cohort 1: UC Cohort Stage 1 Combination Therapy (Experimental) | Total |
|---|---|---|---|---|---|---|---|
| <=18 years | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Between 18 and 65 years | 6 | 4 | 4 | 5 | 5 | 8 | 32 |
| >=65 years | 3 | 3 | 3 | 1 | 2 | 8 | 20 |
| Sex: Female, Male(Participants) | Part A Cohort 1: M9241 4 mcg/kg + Avelumab 10 mg/kg (Experimental) | Part A Cohort 2: M9241 8 mcg/kg + Avelumab 10 mg/kg (Experimental) | Part A Cohort 3: M9241 12 mcg/kg + Avelumab 10 mg/kg (Experimental) | Part A Cohort 4: M9241 16.8 mcg/kg +Avelumab 10 mg/kg (Experimental) | Part A Cohort 5: M9241 16.8 mcg/kg + Avelumab 800 mg (Experimental) | Part B Cohort 1: UC Cohort Stage 1 Combination Therapy (Experimental) | Total |
|---|---|---|---|---|---|---|---|
| Female | 5 | 2 | 3 | 2 | 2 | 4 | 18 |
| Male | 4 | 5 | 4 | 4 | 5 | 12 | 34 |
| Ethnicity (NIH/OMB)(Participants) | Part A Cohort 1: M9241 4 mcg/kg + Avelumab 10 mg/kg (Experimental) | Part A Cohort 2: M9241 8 mcg/kg + Avelumab 10 mg/kg (Experimental) | Part A Cohort 3: M9241 12 mcg/kg + Avelumab 10 mg/kg (Experimental) | Part A Cohort 4: M9241 16.8 mcg/kg +Avelumab 10 mg/kg (Experimental) | Part A Cohort 5: M9241 16.8 mcg/kg + Avelumab 800 mg (Experimental) | Part B Cohort 1: UC Cohort Stage 1 Combination Therapy (Experimental) | Total |
|---|---|---|---|---|---|---|---|
| Hispanic or Latino | 0 | 0 | 0 | 0 | 2 | 0 | 2 |
| Not Hispanic or Latino | 8 | 6 | 7 | 6 | 5 | 16 | 48 |
| Unknown or Not Reported | 1 | 1 | 0 | 0 | 0 | 0 | 2 |
| Race (NIH/OMB)(Participants) | Part A Cohort 1: M9241 4 mcg/kg + Avelumab 10 mg/kg (Experimental) | Part A Cohort 2: M9241 8 mcg/kg + Avelumab 10 mg/kg (Experimental) | Part A Cohort 3: M9241 12 mcg/kg + Avelumab 10 mg/kg (Experimental) | Part A Cohort 4: M9241 16.8 mcg/kg +Avelumab 10 mg/kg (Experimental) | Part A Cohort 5: M9241 16.8 mcg/kg + Avelumab 800 mg (Experimental) | Part B Cohort 1: UC Cohort Stage 1 Combination Therapy (Experimental) | Total |
|---|---|---|---|---|---|---|---|
| American Indian or Alaska Native | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Asian | 1 | 0 | 0 | 0 | 0 | 0 | 1 |
| Native Hawaiian or Other Pacific Islander | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Black or African American | 0 | 1 | 1 | 0 | 1 | 0 | 3 |
| White | 7 | 5 | 6 | 6 | 6 | 8 | 38 |
| More than one race | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Unknown or Not Reported | 1 | 1 | 0 | 0 | 0 | 8 | 10 |
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Plan to share: No — We are committed to enhancing public health through responsible sharing of clinical trial data. Following approval of a new product or a new indication for an approved product in both the US and the European Union, the study sponsor and/or its affiliated companies will share study protocols, anonymized patient data and study level data, and redacted clinical study reports with qualified scientific and medical researchers, upon request, as necessary for conducting legitimate research. Further information on how to request data can be found on our website bit.ly/IPD21
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