Trial Outcomes & Findings for Pembrolizumab and Stereotactic Radiosurgery for Melanoma or Non-Small Cell Lung Cancer Brain Metastases (NCT NCT02858869)
NCT ID: NCT02858869
Last Updated: 2026-03-09
Results Overview
Number of dose limiting toxicity events defined as Radiation Therapy Oncology Group grade 3 central nervous system toxicities which are irreversible severe neurological symptoms requiring medications. Toxicity events for each arm will be reported, and 95% confidence intervals will be estimated using the Clopper-Pearson method. Number of with DLT (%).
COMPLETED
PHASE1
25 participants
3 months after first pembrolizumab dose
2026-03-09
Participant Flow
Participant milestones
| Measure |
Experimental: Arm A (Pembrolizumab, 30 Gray (Gy) Over 5 Fractions)
Patients receive 200 mg pembrolizumab IV over 30 minutes on day 1. Courses repeat Q3W for at least 2 years in the absence of disease progression or unacceptable toxicity. Patients undergo 5 SRS fractions between days 2-15 of course 1.
Pembrolizumab: Given IV
Stereotactic Radiosurgery: Undergo SRS
|
Experimental: Arm B (Pembrolizumab, 27 Gy Over 3 Fractions)
Patients receive pembrolizumab IV as in Arm A. Patients undergo 3 SRS fractions between days 2-15 of course 1.
Pembrolizumab: Given IV
Stereotactic Radiosurgery: Undergo SRS
|
Experimental: Arm C (Pembrolizumab, 18-21 Gy in One Fraction)
Patients receive pembrolizumab IV as in Arm A. Patients undergo 1 SRS fraction between days 2-3 of course 1.
Pembrolizumab: Given IV
Stereotactic Radiosurgery: Undergo SRS
|
|---|---|---|---|
|
Overall Study
STARTED
|
6
|
12
|
7
|
|
Overall Study
COMPLETED
|
6
|
12
|
7
|
|
Overall Study
NOT COMPLETED
|
0
|
0
|
0
|
Reasons for withdrawal
Withdrawal data not reported
Baseline Characteristics
Pembrolizumab and Stereotactic Radiosurgery for Melanoma or Non-Small Cell Lung Cancer Brain Metastases
Baseline characteristics by cohort
| Measure |
Experimental: Arm A (Pembrolizumab, 30 Gray (Gy) Over 5 Fractions)
n=6 Participants
Patients receive 200 mg pembrolizumab IV over 30 minutes on day 1. Courses repeat Q3W for at least 2 years in the absence of disease progression or unacceptable toxicity. Patients undergo 5 SRS fractions between days 2-15 of course 1.
Pembrolizumab: Given IV
Stereotactic Radiosurgery: Undergo SRS
|
Experimental: Arm B (Pembrolizumab, 27 Gy Over 3 Fractions)
n=12 Participants
Patients receive pembrolizumab IV as in Arm A. Patients undergo 3 SRS fractions between days 2-15 of course 1.
Pembrolizumab: Given IV
Stereotactic Radiosurgery: Undergo SRS
|
Experimental: Arm C (Pembrolizumab, 18-21 Gy in One Fraction)
n=7 Participants
Patients receive pembrolizumab IV as in Arm A. Patients undergo 1 SRS fraction between days 2-3 of course 1.
Pembrolizumab: Given IV
Stereotactic Radiosurgery: Undergo SRS
|
Total
n=25 Participants
Total of all reporting groups
|
|---|---|---|---|---|
|
Age, Continuous
|
63.2 years
n=68 Participants
|
63.3 years
n=69 Participants
|
56.9 years
n=137 Participants
|
63 years
n=565 Participants
|
|
Sex: Female, Male
Female
|
2 Participants
n=68 Participants
|
5 Participants
n=69 Participants
|
3 Participants
n=137 Participants
|
10 Participants
n=565 Participants
|
|
Sex: Female, Male
Male
|
4 Participants
n=68 Participants
|
7 Participants
n=69 Participants
|
4 Participants
n=137 Participants
|
15 Participants
n=565 Participants
|
|
Ethnicity (NIH/OMB)
Hispanic or Latino
|
0 Participants
n=68 Participants
|
2 Participants
n=69 Participants
|
0 Participants
n=137 Participants
|
2 Participants
n=565 Participants
|
|
Ethnicity (NIH/OMB)
Not Hispanic or Latino
|
6 Participants
n=68 Participants
|
10 Participants
n=69 Participants
|
7 Participants
n=137 Participants
|
23 Participants
n=565 Participants
|
|
Ethnicity (NIH/OMB)
Unknown or Not Reported
|
0 Participants
n=68 Participants
|
0 Participants
n=69 Participants
|
0 Participants
n=137 Participants
|
0 Participants
n=565 Participants
|
|
Race (NIH/OMB)
American Indian or Alaska Native
|
0 Participants
n=68 Participants
|
0 Participants
n=69 Participants
|
0 Participants
n=137 Participants
|
0 Participants
n=565 Participants
|
|
Race (NIH/OMB)
Asian
|
0 Participants
n=68 Participants
|
0 Participants
n=69 Participants
|
0 Participants
n=137 Participants
|
0 Participants
n=565 Participants
|
|
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
|
0 Participants
n=68 Participants
|
0 Participants
n=69 Participants
|
0 Participants
n=137 Participants
|
0 Participants
n=565 Participants
|
|
Race (NIH/OMB)
Black or African American
|
1 Participants
n=68 Participants
|
0 Participants
n=69 Participants
|
0 Participants
n=137 Participants
|
1 Participants
n=565 Participants
|
|
Race (NIH/OMB)
White
|
5 Participants
n=68 Participants
|
12 Participants
n=69 Participants
|
7 Participants
n=137 Participants
|
24 Participants
n=565 Participants
|
|
Race (NIH/OMB)
More than one race
|
0 Participants
n=68 Participants
|
0 Participants
n=69 Participants
|
0 Participants
n=137 Participants
|
0 Participants
n=565 Participants
|
|
Race (NIH/OMB)
Unknown or Not Reported
|
0 Participants
n=68 Participants
|
0 Participants
n=69 Participants
|
0 Participants
n=137 Participants
|
0 Participants
n=565 Participants
|
|
Region of Enrollment
United States
|
6 participants
n=68 Participants
|
12 participants
n=69 Participants
|
7 participants
n=137 Participants
|
25 participants
n=565 Participants
|
|
Previous systemic therapies (medications that travel throughout the body to destroy cancer cells)
|
1 Participants
n=68 Participants
|
6 Participants
n=69 Participants
|
5 Participants
n=137 Participants
|
12 Participants
n=565 Participants
|
PRIMARY outcome
Timeframe: 3 months after first pembrolizumab doseNumber of dose limiting toxicity events defined as Radiation Therapy Oncology Group grade 3 central nervous system toxicities which are irreversible severe neurological symptoms requiring medications. Toxicity events for each arm will be reported, and 95% confidence intervals will be estimated using the Clopper-Pearson method. Number of with DLT (%).
Outcome measures
| Measure |
Experimental: Arm A (Pembrolizumab, 30 Gray (Gy) Over 5 Fractions)
n=6 Participants
Patients receive 200 mg pembrolizumab IV over 30 minutes on day 1. Courses repeat Q3W for at least 2 years in the absence of disease progression or unacceptable toxicity. Patients undergo 5 SRS fractions between days 2-15 of course 1.
Pembrolizumab: Given IV
Stereotactic Radiosurgery: Undergo SRS
|
Experimental: Arm B (Pembrolizumab, 27 Gy Over 3 Fractions)
n=12 Participants
Patients receive pembrolizumab IV as in Arm A. Patients undergo 3 SRS fractions between days 2-15 of course 1.
Pembrolizumab: Given IV
Stereotactic Radiosurgery: Undergo SRS
|
Experimental: Arm C (Pembrolizumab, 18-21 Gy in One Fraction)
n=7 Participants
Patients receive pembrolizumab IV as in Arm A. Patients undergo 1 SRS fraction between days 2-3 of course 1.
Pembrolizumab: Given IV
Stereotactic Radiosurgery: Undergo SRS
|
|---|---|---|---|
|
Dose Limiting Toxicities
|
0 Participants
Interval 0.0 to 46.0
|
0 Participants
Interval 0.0 to 26.0
|
0 Participants
Interval 0.0 to 41.0
|
SECONDARY outcome
Timeframe: From first treatment on cycle 1, day 1 to the earlier of date of death and/or last follow up, assessed up to 3 yearsTime from treatment initiation to death from any cause. Those who were alive were censored at last follow-up. Estimated using the Kaplan-Meier product-limit method. Median and 95% CI using Brookmeyer-Crowley method reported.
Outcome measures
| Measure |
Experimental: Arm A (Pembrolizumab, 30 Gray (Gy) Over 5 Fractions)
n=6 Participants
Patients receive 200 mg pembrolizumab IV over 30 minutes on day 1. Courses repeat Q3W for at least 2 years in the absence of disease progression or unacceptable toxicity. Patients undergo 5 SRS fractions between days 2-15 of course 1.
Pembrolizumab: Given IV
Stereotactic Radiosurgery: Undergo SRS
|
Experimental: Arm B (Pembrolizumab, 27 Gy Over 3 Fractions)
n=12 Participants
Patients receive pembrolizumab IV as in Arm A. Patients undergo 3 SRS fractions between days 2-15 of course 1.
Pembrolizumab: Given IV
Stereotactic Radiosurgery: Undergo SRS
|
Experimental: Arm C (Pembrolizumab, 18-21 Gy in One Fraction)
n=7 Participants
Patients receive pembrolizumab IV as in Arm A. Patients undergo 1 SRS fraction between days 2-3 of course 1.
Pembrolizumab: Given IV
Stereotactic Radiosurgery: Undergo SRS
|
|---|---|---|---|
|
Overall Survival
|
NA Months
Interval 0.99 to
SAS leaves the median survival blank in PROC LIFETEST when the Kaplan-Meier survival probability is exactly 0.5 because the median is technically defined as the first time point where the survival function drops below 0.5. If the curve hits 0.5 and stops, or if censored observations prevent the curve from falling strictly below 0.5, the median is not technically reached.
|
32.8 Months
Interval 4.89 to
Not reached.
|
12.2 Months
Interval 2.86 to
Not reached.
|
SECONDARY outcome
Timeframe: Up to 12 months after first pembrolizumab doseDefined as proportion with evidence of necrosis on MRI images (radiographic evidence or radionecrosis) and a patient having neurological symptoms attributed to the location where the radiosurgery was done. The proportion will be reported, and a 95% confidence interval will be estimated using the Clopper-Pearson method. Number with symptomatic radiation necrosis.
Outcome measures
| Measure |
Experimental: Arm A (Pembrolizumab, 30 Gray (Gy) Over 5 Fractions)
n=6 Participants
Patients receive 200 mg pembrolizumab IV over 30 minutes on day 1. Courses repeat Q3W for at least 2 years in the absence of disease progression or unacceptable toxicity. Patients undergo 5 SRS fractions between days 2-15 of course 1.
Pembrolizumab: Given IV
Stereotactic Radiosurgery: Undergo SRS
|
Experimental: Arm B (Pembrolizumab, 27 Gy Over 3 Fractions)
n=12 Participants
Patients receive pembrolizumab IV as in Arm A. Patients undergo 3 SRS fractions between days 2-15 of course 1.
Pembrolizumab: Given IV
Stereotactic Radiosurgery: Undergo SRS
|
Experimental: Arm C (Pembrolizumab, 18-21 Gy in One Fraction)
n=7 Participants
Patients receive pembrolizumab IV as in Arm A. Patients undergo 1 SRS fraction between days 2-3 of course 1.
Pembrolizumab: Given IV
Stereotactic Radiosurgery: Undergo SRS
|
|---|---|---|---|
|
Rate of Symptomatic Radiation Necrosis
|
0 Percentage of participants
Interval 0.0 to 46.0
|
16.7 Percentage of participants
Interval 2.1 to 48.0
|
14.3 Percentage of participants
Interval 0.3 to 58.0
|
SECONDARY outcome
Timeframe: From the first treatment on cycle 1, day 1 to the earlier of the recurrence event and/or last follow up/death, at least 6 monthsDefined as proportion with a best overall response of stable disease or better for intracranial lesions present at baseline. Assessed using RECIST and immune RECIST Criteria. The proportion will be reported, and a 95% confidence interval will be estimated using the Clopper-Pearson method. Number with clinical benefit (%).
Outcome measures
| Measure |
Experimental: Arm A (Pembrolizumab, 30 Gray (Gy) Over 5 Fractions)
n=5 Participants
Patients receive 200 mg pembrolizumab IV over 30 minutes on day 1. Courses repeat Q3W for at least 2 years in the absence of disease progression or unacceptable toxicity. Patients undergo 5 SRS fractions between days 2-15 of course 1.
Pembrolizumab: Given IV
Stereotactic Radiosurgery: Undergo SRS
|
Experimental: Arm B (Pembrolizumab, 27 Gy Over 3 Fractions)
n=10 Participants
Patients receive pembrolizumab IV as in Arm A. Patients undergo 3 SRS fractions between days 2-15 of course 1.
Pembrolizumab: Given IV
Stereotactic Radiosurgery: Undergo SRS
|
Experimental: Arm C (Pembrolizumab, 18-21 Gy in One Fraction)
n=5 Participants
Patients receive pembrolizumab IV as in Arm A. Patients undergo 1 SRS fraction between days 2-3 of course 1.
Pembrolizumab: Given IV
Stereotactic Radiosurgery: Undergo SRS
|
|---|---|---|---|
|
Clinical Benefit (Intra-cranial)
|
100 Percentage of participants
Interval 48.0 to 100.0
|
60 Percentage of participants
Interval 26.0 to 88.0
|
20 Percentage of participants
Interval 0.5 to 72.0
|
SECONDARY outcome
Timeframe: From the first treatment on cycle 1, day 1 to the earlier of the recurrence event and/or last follow up/death, at least 6 monthsDefined as proportion with a best overall response of stable disease or better for extra-cranial lesions present at baseline. Assessed using RECIST and immune RECIST Criteria. Assessed using RECIST and immune RECIST Criteria. The proportion will be reported, and a 95% confidence interval will be estimated using the Clopper-Pearson method. Number with clinical benefit (%).
Outcome measures
| Measure |
Experimental: Arm A (Pembrolizumab, 30 Gray (Gy) Over 5 Fractions)
n=5 Participants
Patients receive 200 mg pembrolizumab IV over 30 minutes on day 1. Courses repeat Q3W for at least 2 years in the absence of disease progression or unacceptable toxicity. Patients undergo 5 SRS fractions between days 2-15 of course 1.
Pembrolizumab: Given IV
Stereotactic Radiosurgery: Undergo SRS
|
Experimental: Arm B (Pembrolizumab, 27 Gy Over 3 Fractions)
n=11 Participants
Patients receive pembrolizumab IV as in Arm A. Patients undergo 3 SRS fractions between days 2-15 of course 1.
Pembrolizumab: Given IV
Stereotactic Radiosurgery: Undergo SRS
|
Experimental: Arm C (Pembrolizumab, 18-21 Gy in One Fraction)
n=6 Participants
Patients receive pembrolizumab IV as in Arm A. Patients undergo 1 SRS fraction between days 2-3 of course 1.
Pembrolizumab: Given IV
Stereotactic Radiosurgery: Undergo SRS
|
|---|---|---|---|
|
Clinical Benefit (Extra-cranial)
|
60 Percentage of participants
Interval 15.0 to 95.0
|
55 Percentage of participants
Interval 23.0 to 83.0
|
33 Percentage of participants
Interval 4.0 to 78.0
|
Adverse Events
Experimental: Arm A (Pembrolizumab, 30 Gray (Gy) Over 5 Fractions)
Experimental: Arm B (Pembrolizumab, 27 Gy Over 3 Fractions)
Experimental: Arm C (Pembrolizumab, 18-21 Gy in One Fraction)
Serious adverse events
| Measure |
Experimental: Arm A (Pembrolizumab, 30 Gray (Gy) Over 5 Fractions)
n=6 participants at risk
Patients receive 200 mg pembrolizumab IV over 30 minutes on day 1. Courses repeat Q3W for at least 2 years in the absence of disease progression or unacceptable toxicity. Patients undergo 5 SRS fractions between days 2-15 of course 1.
Pembrolizumab: Given IV
Stereotactic Radiosurgery: Undergo SRS
|
Experimental: Arm B (Pembrolizumab, 27 Gy Over 3 Fractions)
n=12 participants at risk
Patients receive pembrolizumab IV as in Arm A. Patients undergo 3 SRS fractions between days 2-15 of course 1.
Pembrolizumab: Given IV
Stereotactic Radiosurgery: Undergo SRS
|
Experimental: Arm C (Pembrolizumab, 18-21 Gy in One Fraction)
n=7 participants at risk
Patients receive pembrolizumab IV as in Arm A. Patients undergo 1 SRS fraction between days 2-3 of course 1.
Pembrolizumab: Given IV
Stereotactic Radiosurgery: Undergo SRS
|
|---|---|---|---|
|
Respiratory, thoracic and mediastinal disorders
Pleural effusion
|
16.7%
1/6 • Serious and Other Adverse Events assessed for 15 months, mortality assessed up to 3 years)
|
0.00%
0/12 • Serious and Other Adverse Events assessed for 15 months, mortality assessed up to 3 years)
|
0.00%
0/7 • Serious and Other Adverse Events assessed for 15 months, mortality assessed up to 3 years)
|
|
Respiratory, thoracic and mediastinal disorders
Pleuritic pain
|
16.7%
1/6 • Serious and Other Adverse Events assessed for 15 months, mortality assessed up to 3 years)
|
0.00%
0/12 • Serious and Other Adverse Events assessed for 15 months, mortality assessed up to 3 years)
|
0.00%
0/7 • Serious and Other Adverse Events assessed for 15 months, mortality assessed up to 3 years)
|
|
Respiratory, thoracic and mediastinal disorders
Respiratory, thoracic and mediastinal disorders - Other, specify - Pulmonary embolism
|
33.3%
2/6 • Serious and Other Adverse Events assessed for 15 months, mortality assessed up to 3 years)
|
8.3%
1/12 • Serious and Other Adverse Events assessed for 15 months, mortality assessed up to 3 years)
|
0.00%
0/7 • Serious and Other Adverse Events assessed for 15 months, mortality assessed up to 3 years)
|
|
Respiratory, thoracic and mediastinal disorders
Respiratory failure
|
33.3%
2/6 • Serious and Other Adverse Events assessed for 15 months, mortality assessed up to 3 years)
|
0.00%
0/12 • Serious and Other Adverse Events assessed for 15 months, mortality assessed up to 3 years)
|
0.00%
0/7 • Serious and Other Adverse Events assessed for 15 months, mortality assessed up to 3 years)
|
|
Gastrointestinal disorders
Nausea
|
0.00%
0/6 • Serious and Other Adverse Events assessed for 15 months, mortality assessed up to 3 years)
|
8.3%
1/12 • Serious and Other Adverse Events assessed for 15 months, mortality assessed up to 3 years)
|
0.00%
0/7 • Serious and Other Adverse Events assessed for 15 months, mortality assessed up to 3 years)
|
|
Gastrointestinal disorders
Vomiting
|
0.00%
0/6 • Serious and Other Adverse Events assessed for 15 months, mortality assessed up to 3 years)
|
8.3%
1/12 • Serious and Other Adverse Events assessed for 15 months, mortality assessed up to 3 years)
|
0.00%
0/7 • Serious and Other Adverse Events assessed for 15 months, mortality assessed up to 3 years)
|
|
General disorders
Chills
|
0.00%
0/6 • Serious and Other Adverse Events assessed for 15 months, mortality assessed up to 3 years)
|
8.3%
1/12 • Serious and Other Adverse Events assessed for 15 months, mortality assessed up to 3 years)
|
0.00%
0/7 • Serious and Other Adverse Events assessed for 15 months, mortality assessed up to 3 years)
|
|
General disorders
Fatigue
|
0.00%
0/6 • Serious and Other Adverse Events assessed for 15 months, mortality assessed up to 3 years)
|
8.3%
1/12 • Serious and Other Adverse Events assessed for 15 months, mortality assessed up to 3 years)
|
0.00%
0/7 • Serious and Other Adverse Events assessed for 15 months, mortality assessed up to 3 years)
|
|
General disorders
Fever
|
0.00%
0/6 • Serious and Other Adverse Events assessed for 15 months, mortality assessed up to 3 years)
|
8.3%
1/12 • Serious and Other Adverse Events assessed for 15 months, mortality assessed up to 3 years)
|
0.00%
0/7 • Serious and Other Adverse Events assessed for 15 months, mortality assessed up to 3 years)
|
|
Gastrointestinal disorders
Abdominal pain
|
0.00%
0/6 • Serious and Other Adverse Events assessed for 15 months, mortality assessed up to 3 years)
|
0.00%
0/12 • Serious and Other Adverse Events assessed for 15 months, mortality assessed up to 3 years)
|
14.3%
1/7 • Serious and Other Adverse Events assessed for 15 months, mortality assessed up to 3 years)
|
|
General disorders
Wound Infection
|
16.7%
1/6 • Serious and Other Adverse Events assessed for 15 months, mortality assessed up to 3 years)
|
0.00%
0/12 • Serious and Other Adverse Events assessed for 15 months, mortality assessed up to 3 years)
|
0.00%
0/7 • Serious and Other Adverse Events assessed for 15 months, mortality assessed up to 3 years)
|
|
Musculoskeletal and connective tissue disorders
Chest Wall Pain
|
0.00%
0/6 • Serious and Other Adverse Events assessed for 15 months, mortality assessed up to 3 years)
|
8.3%
1/12 • Serious and Other Adverse Events assessed for 15 months, mortality assessed up to 3 years)
|
0.00%
0/7 • Serious and Other Adverse Events assessed for 15 months, mortality assessed up to 3 years)
|
|
Nervous system disorders
Headache
|
0.00%
0/6 • Serious and Other Adverse Events assessed for 15 months, mortality assessed up to 3 years)
|
8.3%
1/12 • Serious and Other Adverse Events assessed for 15 months, mortality assessed up to 3 years)
|
0.00%
0/7 • Serious and Other Adverse Events assessed for 15 months, mortality assessed up to 3 years)
|
|
General disorders
shortness of breath
|
0.00%
0/6 • Serious and Other Adverse Events assessed for 15 months, mortality assessed up to 3 years)
|
8.3%
1/12 • Serious and Other Adverse Events assessed for 15 months, mortality assessed up to 3 years)
|
0.00%
0/7 • Serious and Other Adverse Events assessed for 15 months, mortality assessed up to 3 years)
|
|
Infections and infestations
Wound Infection
|
0.00%
0/6 • Serious and Other Adverse Events assessed for 15 months, mortality assessed up to 3 years)
|
8.3%
1/12 • Serious and Other Adverse Events assessed for 15 months, mortality assessed up to 3 years)
|
0.00%
0/7 • Serious and Other Adverse Events assessed for 15 months, mortality assessed up to 3 years)
|
|
Cardiac disorders
Palpitations
|
16.7%
1/6 • Serious and Other Adverse Events assessed for 15 months, mortality assessed up to 3 years)
|
0.00%
0/12 • Serious and Other Adverse Events assessed for 15 months, mortality assessed up to 3 years)
|
0.00%
0/7 • Serious and Other Adverse Events assessed for 15 months, mortality assessed up to 3 years)
|
|
General disorders
Non-cardiac chest pain
|
16.7%
1/6 • Serious and Other Adverse Events assessed for 15 months, mortality assessed up to 3 years)
|
0.00%
0/12 • Serious and Other Adverse Events assessed for 15 months, mortality assessed up to 3 years)
|
0.00%
0/7 • Serious and Other Adverse Events assessed for 15 months, mortality assessed up to 3 years)
|
|
Respiratory, thoracic and mediastinal disorders
Cough
|
16.7%
1/6 • Serious and Other Adverse Events assessed for 15 months, mortality assessed up to 3 years)
|
8.3%
1/12 • Serious and Other Adverse Events assessed for 15 months, mortality assessed up to 3 years)
|
0.00%
0/7 • Serious and Other Adverse Events assessed for 15 months, mortality assessed up to 3 years)
|
|
Respiratory, thoracic and mediastinal disorders
Dyspnea
|
16.7%
1/6 • Serious and Other Adverse Events assessed for 15 months, mortality assessed up to 3 years)
|
0.00%
0/12 • Serious and Other Adverse Events assessed for 15 months, mortality assessed up to 3 years)
|
0.00%
0/7 • Serious and Other Adverse Events assessed for 15 months, mortality assessed up to 3 years)
|
Other adverse events
| Measure |
Experimental: Arm A (Pembrolizumab, 30 Gray (Gy) Over 5 Fractions)
n=6 participants at risk
Patients receive 200 mg pembrolizumab IV over 30 minutes on day 1. Courses repeat Q3W for at least 2 years in the absence of disease progression or unacceptable toxicity. Patients undergo 5 SRS fractions between days 2-15 of course 1.
Pembrolizumab: Given IV
Stereotactic Radiosurgery: Undergo SRS
|
Experimental: Arm B (Pembrolizumab, 27 Gy Over 3 Fractions)
n=12 participants at risk
Patients receive pembrolizumab IV as in Arm A. Patients undergo 3 SRS fractions between days 2-15 of course 1.
Pembrolizumab: Given IV
Stereotactic Radiosurgery: Undergo SRS
|
Experimental: Arm C (Pembrolizumab, 18-21 Gy in One Fraction)
n=7 participants at risk
Patients receive pembrolizumab IV as in Arm A. Patients undergo 1 SRS fraction between days 2-3 of course 1.
Pembrolizumab: Given IV
Stereotactic Radiosurgery: Undergo SRS
|
|---|---|---|---|
|
Eye disorders
Periorbital edema
|
16.7%
1/6 • Serious and Other Adverse Events assessed for 15 months, mortality assessed up to 3 years)
|
0.00%
0/12 • Serious and Other Adverse Events assessed for 15 months, mortality assessed up to 3 years)
|
0.00%
0/7 • Serious and Other Adverse Events assessed for 15 months, mortality assessed up to 3 years)
|
|
Gastrointestinal disorders
Diarrhea
|
0.00%
0/6 • Serious and Other Adverse Events assessed for 15 months, mortality assessed up to 3 years)
|
8.3%
1/12 • Serious and Other Adverse Events assessed for 15 months, mortality assessed up to 3 years)
|
0.00%
0/7 • Serious and Other Adverse Events assessed for 15 months, mortality assessed up to 3 years)
|
|
Gastrointestinal disorders
Constipation
|
0.00%
0/6 • Serious and Other Adverse Events assessed for 15 months, mortality assessed up to 3 years)
|
8.3%
1/12 • Serious and Other Adverse Events assessed for 15 months, mortality assessed up to 3 years)
|
0.00%
0/7 • Serious and Other Adverse Events assessed for 15 months, mortality assessed up to 3 years)
|
|
General disorders
Pain
|
16.7%
1/6 • Serious and Other Adverse Events assessed for 15 months, mortality assessed up to 3 years)
|
0.00%
0/12 • Serious and Other Adverse Events assessed for 15 months, mortality assessed up to 3 years)
|
0.00%
0/7 • Serious and Other Adverse Events assessed for 15 months, mortality assessed up to 3 years)
|
|
Investigations
Platelet count decreased
|
16.7%
1/6 • Serious and Other Adverse Events assessed for 15 months, mortality assessed up to 3 years)
|
0.00%
0/12 • Serious and Other Adverse Events assessed for 15 months, mortality assessed up to 3 years)
|
0.00%
0/7 • Serious and Other Adverse Events assessed for 15 months, mortality assessed up to 3 years)
|
|
Investigations
White blood cell decreased
|
0.00%
0/6 • Serious and Other Adverse Events assessed for 15 months, mortality assessed up to 3 years)
|
8.3%
1/12 • Serious and Other Adverse Events assessed for 15 months, mortality assessed up to 3 years)
|
0.00%
0/7 • Serious and Other Adverse Events assessed for 15 months, mortality assessed up to 3 years)
|
|
Metabolism and nutrition disorders
Hypoglycemia
|
16.7%
1/6 • Serious and Other Adverse Events assessed for 15 months, mortality assessed up to 3 years)
|
0.00%
0/12 • Serious and Other Adverse Events assessed for 15 months, mortality assessed up to 3 years)
|
0.00%
0/7 • Serious and Other Adverse Events assessed for 15 months, mortality assessed up to 3 years)
|
|
Metabolism and nutrition disorders
Hypokalemia
|
0.00%
0/6 • Serious and Other Adverse Events assessed for 15 months, mortality assessed up to 3 years)
|
8.3%
1/12 • Serious and Other Adverse Events assessed for 15 months, mortality assessed up to 3 years)
|
0.00%
0/7 • Serious and Other Adverse Events assessed for 15 months, mortality assessed up to 3 years)
|
|
Psychiatric disorders
Agitation
|
16.7%
1/6 • Serious and Other Adverse Events assessed for 15 months, mortality assessed up to 3 years)
|
0.00%
0/12 • Serious and Other Adverse Events assessed for 15 months, mortality assessed up to 3 years)
|
0.00%
0/7 • Serious and Other Adverse Events assessed for 15 months, mortality assessed up to 3 years)
|
|
Skin and subcutaneous tissue disorders
Radiation dermatitis
|
16.7%
1/6 • Serious and Other Adverse Events assessed for 15 months, mortality assessed up to 3 years)
|
0.00%
0/12 • Serious and Other Adverse Events assessed for 15 months, mortality assessed up to 3 years)
|
0.00%
0/7 • Serious and Other Adverse Events assessed for 15 months, mortality assessed up to 3 years)
|
|
Skin and subcutaneous tissue disorders
Dermatitis, other
|
16.7%
1/6 • Serious and Other Adverse Events assessed for 15 months, mortality assessed up to 3 years)
|
8.3%
1/12 • Serious and Other Adverse Events assessed for 15 months, mortality assessed up to 3 years)
|
0.00%
0/7 • Serious and Other Adverse Events assessed for 15 months, mortality assessed up to 3 years)
|
|
Nervous system disorders
Symptomatic radionecrosis
|
0.00%
0/6 • Serious and Other Adverse Events assessed for 15 months, mortality assessed up to 3 years)
|
16.7%
2/12 • Serious and Other Adverse Events assessed for 15 months, mortality assessed up to 3 years)
|
14.3%
1/7 • Serious and Other Adverse Events assessed for 15 months, mortality assessed up to 3 years)
|
|
Gastrointestinal disorders
Nausea
|
0.00%
0/6 • Serious and Other Adverse Events assessed for 15 months, mortality assessed up to 3 years)
|
8.3%
1/12 • Serious and Other Adverse Events assessed for 15 months, mortality assessed up to 3 years)
|
0.00%
0/7 • Serious and Other Adverse Events assessed for 15 months, mortality assessed up to 3 years)
|
|
Nervous system disorders
Headache
|
33.3%
2/6 • Serious and Other Adverse Events assessed for 15 months, mortality assessed up to 3 years)
|
8.3%
1/12 • Serious and Other Adverse Events assessed for 15 months, mortality assessed up to 3 years)
|
0.00%
0/7 • Serious and Other Adverse Events assessed for 15 months, mortality assessed up to 3 years)
|
|
Nervous system disorders
Extremity Numbness
|
0.00%
0/6 • Serious and Other Adverse Events assessed for 15 months, mortality assessed up to 3 years)
|
8.3%
1/12 • Serious and Other Adverse Events assessed for 15 months, mortality assessed up to 3 years)
|
0.00%
0/7 • Serious and Other Adverse Events assessed for 15 months, mortality assessed up to 3 years)
|
Additional Information
Results disclosure agreements
- Principal investigator is a sponsor employee
- Publication restrictions are in place