Neoplasms

Digestive System Diseases

All Conditions

Rectal Neoplasms

Colorectal Neoplasms

Intestinal Neoplasms

Gastrointestinal Neoplasms

Digestive System Neoplasms

Gastrointestinal Diseases

Intestinal Diseases

Rectal Diseases

Antineoplastic Agents

All Drugs and Chemicals

Capecitabine

Peposertib

Antimetabolites

Protein Kinase Inhibitors

Enzyme Inhibitors

Participants received peposertib 50 milligram (mg) once daily in combination with capecitabine 825 milligram per square meter (mg/m\^2) twice daily 5 days per week and radiotherapy (RT) of 50 to 50.4 Gray (Gy) to the tumor area and 45 Gy to the electively irradiated tissues in 25 to 28 fractions up to 5.5 weeks treatment period.

Participants received peposertib 100 mg once daily in combination with capecitabine 825 mg/m\^2 twice daily 5 days per week and RT of 50 to 50.4 Gy to the tumor area and 45 Gy to the electively irradiated tissues in 25 to 28 fractions up to 5.5 weeks treatment period.

Participants received peposertib 150 mg once daily in combination with capecitabine 825 mg/m\^2 twice daily 5 days per week and RT of 50 to 50.4 Gy to the tumor area and 45 Gy to the electively irradiated tissues in 25 to 28 fractions up to 5.5 weeks treatment period.

Participants received peposertib 250 mg once daily in combination with capecitabine 825 mg/m\^2 twice daily 5 days per week and RT of 50 to 50.4 Gy to the tumor area and 45 Gy to the electively irradiated tissues in 25 to 28 fractions up to 5.5 weeks treatment period.

Participants received peposertib 50 milligram (mg) once daily 5 days per week up to 5.5 weeks.

Peposertib 50 mg

Participants received peposertib 100 mg once daily 5 days per week up to 5.5 weeks.

Peposertib 100 mg

Participants received peposertib 150 mg once daily 5 days per week up to 5.5 weeks.

Peposertib 150 mg

Participants received peposertib 250 mg once daily 5 days per week up to 5.5 weeks.

Peposertib 250 mg

Participants received capecitabine at a dose of 825 milligram per square meter (mg/m\^2) twice daily 5 days per week up to 5.5 weeks.

Participants received RT 50 to 50.4 Gray (Gy) to the tumor area and 45 Gy to the electively irradiated tissues in 25 to 28 fractions up to 5.5 weeks.

Radiotherapy (RT)

Medical Responsible

The main purpose of the study was to define maximum tolerated dose (MTD), recommended Phase II dose (RP2D) safety and tolerability of Peposertib in combination with capecitabine and radiotherapy (RT).

Study of Peposertib in Combination With Capecitabine and RT in Rectal Cancer

A Multicenter Study With an Open-label Phase Ib Part Followed by a Randomized, Placebo-controlled, Double-blind, Phase II Part to Evaluate Efficacy, Safety, Tolerability, and Pharmacokinetics of the DNA-PK Inhibitor Peposertib (M3814) in Combination With Capecitabine and RT in Participants With Locally Advanced Rectal Cancer

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

DLT is defined as any of following treatment emergent adverse events (TEAEs) considered possibly related to study treatment by Investigator and/or Sponsor up to completion of assigned chemoradiotherapy treatment. DLT were based on SMC: Adverse drug reaction that, in the opinion of SMC, is of potential clinical significance such that further dose escalation would expose participants to unacceptable risk; Any occurrence of drug-induced liver injury meeting the Hy's law criteria; Any Grade 3 toxicity excluding diarrhea, neutropenia lasting for ≤ 5 days, nausea \& vomiting, Grade 3 thrombocytopenia without bleeding; Grade ≥ 4 AEs at least possibly related to study drug, irrespective of duration, excluding: Isolated Grade 4 lymphocytopenia without clinical symptoms; Neutropenia lasting for ≤ 5 days and not associated with fever; Any toxicity related to study drug that causes participant to receive \> 80% of planned peposertib, capecitabine or RT dose.

Adverse event (AE) is any untoward medical occurrence in participant administered pharmaceutical product, regardless of causal relationship with this treatment. Therefore, an AE can be any unfavorable \& unintended sign (including an abnormal laboratory finding), symptom, or disease temporally associated with use of a medicinal product, regardless if it is considered related to medicinal product. 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 treatment start date. TEAEs included both serious and non-serious TEAEs. Treatment-related TEAEs: reasonably related to study intervention. Number of participants with TEAEs and treatment related TEAEs were reported.

The laboratory measurements included hematology and biochemistry values were graded with National Cancer Institute - Common Terminology Criteria for Adverse Events (NCI-CTCAE) version 5.0 toxicity grades (where Grade 1 = mild, Grade 2 = moderate, Grade 3 = severe, Grade 4 = life threatening and Grade 5 = death). Number of participants with abnormalities Grade \>= 3 in laboratory test values were reported.

Vital sign assessments included assessments of heart rate, diastolic blood pressure, systolic blood pressure, respiratory rate and temperature. Number of participants with markedly abnormal vital sign measurements were reported.

Electrocardiograms (ECG) was obtained after the participant has been in a semi-supine position for at least 5 min. ECG parameters included heart rate, PQ/PR duration, QRS and QT duration, QT Interval. Clinical significance was determined by the investigator. Number of participants with clinically significant abnormalities in 12-lead ECG were reported.

pCR: It is defined as absence of viable tumor cells in the primary tumor and lymph nodes. Participants considered to have a pCR if they undergo surgery and no residual cancer is found on histological examination of removed specimen. cCR: Participants are considered to have a cCR if: 1) Absence of any residual tumor in primary site and draining lymph nodes on imaging with magnetic resonance imaging; 2) No visible lesion at endoscopy except a flat scar, telangiectasia, and/or whitening of mucosa; 3) Absence of any palpable tumor or irregularity on digital rectal examination (DRE) and endoscopic ultrasonography (EUS); 4) If a biopsy is taken, it must be negative. Participants are considered as responders to composite endpoint pCR/cCR if participant had surgery and had pCR; participant did not undergo surgery but had cCR. Number of participants with composite pathological complete response (pCR)/ clinical complete response (cCR) were reported.

Disease-free Survival time, defined as the time from first treatment day to the date of the first documentation of objective progressive disease or death due to any cause, whichever occurs first. Median disease-free survival time was estimated according to Kaplan-Meier method.

pCR is defined as the absence of viable tumor cells in the primary tumor and lymph nodes. Participants are considered to have a pCR if they undergo surgery and no residual cancer is found on histological examination of the removed specimen.

cCR: It is defined as participants considered to have a cCR if: 1) Absence of any residual tumor in the primary site and draining lymph nodes on imaging with magnetic resonance; 2) No visible lesion at endoscopy except a flat scar, telangiectasia, and/or whitening of the mucosa; 3) Absence of any palpable tumor or irregularity on digital rectal examination (DRE) and endoscopic ultrasonography (EUS); 4) If a biopsy is taken, it must be negative.

Time from surgery to local recurrence defined as time from day of surgery to the date of the first documentation of progression of disease, flagged as local recurrence. Median time from surgery to local recurrence was estimated according to Kaplan-Meier method.

Time from surgery to distant metastasis defined as time from day of surgery to the date of the first documentation of progression of disease, flagged as distant metastasis. Median time from surgery to distant metastasis was estimated according to Kaplan-Meier method.

The NAR formula includes the clinical tumor (cT) stage, pathologic tumor (pT), and node (pN) stage according to the tumor, node, metastasis classification system for colorectal cancers. The NAR formula is as follows:

\[5pN- 3 (cT- pT) + 12\]2 / 9.61

NAR score ranges from 0 to 100, whereas a score close to 100 is indicative of a poorer prognosis.

Cmax was obtained directly from the concentration versus time curve. One participant was assigned to receive peposertib 100 mg; however, this participant took peposertib 50 mg for FD 1 through FD 10 and then took peposertib 100 mg for remainder of study participation. PK results for this participant was summarized by actual dose received (50 mg) whereas non-PK results are summarized by planned dose (100 mg).

Area under the plasma concentration vs time curve from time zero to the last sampling time t at which the concentration was at or above the lower limit of quantification (LLQ). AUC0-t was to be calculated according to the mixed log-linear trapezoidal rule.

Time to reach the maximum plasma concentration (Tmax) was obtained directly from the concentration versus time curve.

The apparent total body clearance of study intervention following extravascular administration on FD1, taking into account the fraction of dose absorbed. CL/f = Dose oral (p.o.)/AUC0-inf. The predicted AUC0-inf should be used.

The apparent volume of distribution during the terminal phase following extravascular administration, based on the fraction of dose absorbed. Vz/f = Dose/(AUC0-inf multiplied by Lambda z) following single dose. Vz/f= Dose/(AUCtau\*Lambda z) following multiple dose. One participant was assigned to receive peposertib 100 mg; however, this participant took peposertib 50 mg for FD 1 through FD 10 and then took peposertib 100 mg for remainder of study participation. PK results for this participant was summarized by actual dose received (50 mg) whereas non-PK results are summarized by planned dose (100 mg).

Terminal half-life is the time measured for the concentration to decrease by one half. Terminal half-life calculated by natural log 2 divided by lambda z. One participant was assigned to receive peposertib 100 mg; however, this participant took peposertib 50 mg for FD 1 through FD 10 and then took peposertib 100 mg for remainder of study participation. PK results for this participant was summarized by actual dose received (50 mg) whereas non-PK results are summarized by planned dose (100 mg).

Merck KGaA, Darmstadt, Germany

EMD Serono Research & Development Institute, Inc.

Peposertib 50 mg + RT + Capecitabine:

Peposertib 100 mg + RT + Capecitabine:

Peposertib 150 mg + RT + Capecitabine:

Peposertib 250 mg + RT + Capecitabine:

Total

Age, Continuous

Sex: Female, Male

Ethnicity (NIH/OMB)

Race (NIH/OMB)

The safety (SAF) analysis set included all participants who received at least 1 dose of study intervention.

As decided by sponsor study was discontinued prior to the initiation of the Phase II part of the study; therefore, results only from the Phase Ib part of the study was reported.

Communication Center

Dose escalation (DE) analysis set included all participants treated in dose escalation cohorts, who received at least 80% of peposertib, 50% of capecitabine, and 80% of RT planned dose and complete DLT period (5 or 5.5 weeks after start of treatment or for the entire duration of treatment). DE set also included participants treated in dose escalation cohorts who experience a DLT during DLT period regardless of the amount of each study intervention received/completion of the DLT period.

Number of Participants Who Experienced Dose Limiting Toxicity (DLT) Confirmed by Safety Monitoring Committee (SMC)

Participants with TEAEs

Participants with Treatment-Related TEAEs

SAF analysis set included all participants who received at least 1 dose of study intervention.

Number of Participants Wtih Treatment Emergent Adverse Events (TEAEs) and Treatment-Related TEAEs According to National Cancer Institute Common Terminology Criteria of Adverse Events (NCI-CTCAE) Version 5.0

Number of Participants With Abnormalities [Grade Greater Than or Equals to (>=) 3] in Laboratory Test Values

Number of Participants With Markedly Abnormal Vital Sign Measurements

Number of Participants With Clinically Significant Abnormalities in Electrocardiogram (ECG) Findings

Full analysis set (FAS) include all participants who are enrolled in the study and received at least 1 dose of study intervention.

Percentage of Participants With Composite Pathological Complete Response (pCR)/ Clinical Complete Response (cCR)

Participants received peposertib 50 mg, 100 mg, 150 mg and 250 mg in their respective cohort once daily in combination with capecitabine 825 milligram per square meter (mg/m\^2) twice daily 5 days per week and radiotherapy (RT) of 50 to 50.4 Gray (Gy) to the tumor area and 45 Gy to the electively irradiated tissues in 25 to 28 fractions up to 5.5 weeks treatment period.

Overall Participants

FAS include all participants who are enrolled in the study and received at least 1 dose of study intervention. As per the planned analysis, Kaplan-Meier estimates were planned to be presented as overall, together with a summary of associated statistics for this outcome measure.

Disease-free Survival

FAS include all participants who are enrolled in the study and received at least 1 dose of study intervention.

Percentage of Participants With Pathological Complete Response (pCR)

Percentage of Participants With Clinical Complete Response (cCR)

Participants received peposertib 100 mg, 150 mg and 250 mg in their respective cohort once daily in combination with capecitabine 825 milligram per square meter (mg/m\^2) twice daily 5 days per week and radiotherapy (RT) of 50 to 50.4 Gray (Gy) to the tumor area and 45 Gy to the electively irradiated tissues in 25 to 28 fractions up to 5.5 weeks treatment period.

All Participants

FAS include all participants who are enrolled in the study and received at least 1 dose of study intervention. Here, number of participants analyzed signifies those participants who underwent rectal surgery. As per the planned analysis, Kaplan-Meier estimates were planned to be presented overall, together with a summary of associated statistics (median survival time and survival rate estimates) including the corresponding 2-sided 95% Confidence Intervals (CIs) for this outcome measure.

Time From Surgery to Local Recurrence

FAS include all participants who are enrolled in the study and received at least 1 dose of study intervention. Here, number of participants analyzed signifies those participants who underwent rectal surgery. As per the planned analysis, Kaplan-Meier estimates were planned to be presented overall, together with a summary of associated statistics for this outcome measure.

Time From Surgery to Distant Metastasis

FAS include all participants who are enrolled in the study and received at least 1 dose of study intervention. Here, "Number of participants analyzed" signifies those participants who were evaluable for this outcome measure.

Neoadjuvant Rectal (NAR) Score

Fraction Day 1

Fraction Day 9

Pharmacokinetic (PK) analysis set included participants who received at least 1 dose of peposertib and have sufficient peposertib plasma concentration data to enable the calculation of at least 1 PK parameter. Sufficient concentration data is defined as at least 3 valid, post dose, concentration points in the PK profile to obtain any PK parameter.

Maximum Observed Plasma Concentration (Cmax) of Peposertib

PK analysis set was used. One participant was assigned to receive peposertib 100 mg; however, this participant took peposertib 50 mg for FD 1 through FD 10 and then took peposertib 100 mg for remainder of study participation. PK results for this participant was summarized by actual dose received (50 mg) whereas non-PK results are summarized by planned dose (100 mg).

Area Under the Plasma Concentration-time Curve From Time Zero to Last Sampling Time (Tlast) (AUC0-t) of Peposertib

Time to Reach Maximum Plasma Concentration (Tmax) of Peposertib

PK analysis set was used. One participant was assigned to receive peposertib 100 mg; however, this participant took peposertib 50 mg for FD 1 through FD 10 and then took peposertib 100 mg for remainder of study participation. PK results for this participant was summarized by actual dose received (50 mg) whereas non-PK results are summarized by planned dose (100 mg). Here, "Number of participants analyzed" signifies those participants who were evaluable for this outcome measure.

Total Body Clearance Following Oral Administration (CL/f) of Peposertib

PK analysis set was used. Here, "Number of participants" analyzed signifies those participants who were evaluable for this outcome measure. Here, "Number Analyzed" signified those participants who were evaluable at specified timepoint.

Study title	NCT ID	Conditions	Interventions	Eligibility	Organization	Link
Study of Peposertib in Combination With Capecitabine and RT in Rectal Cancer	NCT03770689	Locally Advance...	Peposertib 50 m... Peposertib 100 ... Peposertib 150 ... Peposertib 250 ... Capecitabine Radiotherapy (R...	18 Years -	EMD Serono
Study of Peposertib in Combination With Capecitabine and RT in Rectal Cancer	NCT03770689	Locally Advance...	Peposertib 50 m... Peposertib 100 ... Peposertib 150 ... Peposertib 250 ... Capecitabine Radiotherapy (R...	18 Years -	EMD Serono

Spots Global Cancer Trial Database for peposertib 250 mg