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Pembrolizumab and Radiation Therapy in Treating Patients With Intermediate or High-Grade Soft Tissue Sarcoma

A Pilot Study of Pembrolizumab and Neoadjuvant Radiation for Large, High-Risk Soft Tissue Sarcomas

Status
Completed
Phases
Phase 1Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT03338959
Enrollment
27
Registered
2017-11-09
Start date
2018-03-28
Completion date
2023-08-04
Last updated
2024-07-23

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Recurrent Soft Tissue Sarcoma, Soft Tissue Sarcoma

Brief summary

This phase I/II trial studies pembrolizumab and radiation therapy in treating patients with intermediate or high-grade soft tissue sarcoma. Immunotherapy with monoclonal antibodies, such as pembrolizumab, may help the body's immune system attack the cancer, and may interfere with the ability of tumor cells to grow and spread. Radiation therapy uses high energy x-rays to kill tumor cells and shrink tumors. Giving pembrolizumab and radiation therapy may work better in treating patients with soft tissue sarcoma.

Detailed description

OUTLINE: Patients receive pembrolizumab intravenously (IV) per institutional standard at the Seattle Cancer Care Alliance as an outpatient therapy. Cycles repeat every 3 weeks, up to a maximum of three doses, for 3 months in the absence of disease progression or unacceptable toxicity. Patients also undergo radiation therapy daily for 5-6 weeks beginning on Day 1 of Week 2. After completion of study treatment, patients are followed up at 30 days after last dose, 90 days after last dose, 30 days after post-operative visit (wound care follow-up), and then every 12 weeks for up to 1 year, then every 6 months up to 5 years.

Interventions

BIOLOGICALPembrolizumab

Given IV

RADIATIONRadiation Therapy

Undergo radiation therapy

Sponsors

Merck Sharp & Dohme LLC
CollaboratorINDUSTRY
Fred Hutchinson Cancer Center
Lead SponsorOTHER

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Be willing and able to provide written informed consent for the trial * Be ≥18 years of age on day of signing informed consent documents * Have measurable disease based on RECIST 1.1 * Have newly diagnosed disease or localized recurrent or oligometastatic lesions that are candidates for radiation * NOTE: Subjects may not have any prior systemic therapy or radiation for this sarcoma. They may have received systemic therapy and/or radiation for a different cancer * NOTE: Oligometastatic disease will be defined as 3 or fewer detectable lesions with plans to radiate all detectable disease with conventionally fractionated radiation prior to resection * Have an intermediate- or high-grade soft tissue sarcoma at the discretion of the reviewing Sarcoma pathologist * The tumor must be at least 3 cm in maximum dimension for intermediate-grade tumors, or 1.5 cm in maximum dimension for high-grade tumors * Have plans to undergo neo-adjuvant radiation and surgery with curative intent. A minimum of 45 Gy is necessary, planned to be administered over a minimum of 25 fractions * Be willing to provide tissue from a newly obtained core incisional or excisional biopsy of a tumor lesion. Archival tissue from a recent clinical or research biopsy (within 90 days prior to Week 1 treatment) may be used in place of a fresh tissue biopsy * Have a performance status of 0 or 1 on the Eastern Cooperative Oncology Group (ECOG) performance scale or \> 70% on the Karnofsky scale. Evaluation of performance status is to be performed within 7 days prior to the date of enrollment * Absolute neutrophil count (ANC) \>= 1,500/mcL (performed within 28 days of enrollment) * Platelets \>= 100,000/mcL (performed within 28 days of enrollment) * Hemoglobin \>= 9 g/dL or \>= 5.6 mmol/L (performed within 28 days of enrollment) \* Criteria must be met without erythropoeiten dependency and without packed red blood cell (pRBC) transfusion within last two weeks * Serum creatinine =\< 1.5 X upper limit of normal (ULN) OR measured or calculated creatinine clearance (glomerular filtration rate \[GFR\] can also be used in place of creatinine or creatinine clearance \[CrCl\]) \>= 60 mL/min for subject with creatinine levels \> 1.5 X institutional ULN (performed within 28 days of enrollment) \* Creatinine clearance should be calculated per institutional standard * Serum total bilirubin =\< 1.5 X ULN OR direct bilirubin =\< ULN for subjects with total bilirubin levels \> 1.5 ULN (performed within 28 days of enrollment) * Aspartate aminotransferase (AST) (serum glutamic-oxaloacetic transaminase \[SGOT\]) and alanine aminotransferase (ALT) (serum glutamate pyruvate transaminase \[SGPT\]) =\< 2.5 X ULN (performed within 28 days of enrollment) * Albumin \>= 2.5 mg/dL (performed within 28 days of enrollment) * International normalized ratio (INR) or prothrombin time (PT) =\< 1.5 X ULN unless subject is receiving anticoagulant therapy as long as PT or partial thromboplastin time (PTT) is within therapeutic range of intended use of anticoagulants (performed within 28 days of enrollment) * Activated partial thromboplastin time (aPTT) =\< 1.5 X ULN unless subject is receiving anticoagulant therapy as long as PT or PTT is within therapeutic range of intended use of anticoagulants (performed within 28 days of enrollment) * Female subjects of childbearing potential should have a negative serum pregnancy within 72 hours prior to receiving the first dose of study medication * All individuals of child-bearing potential must be willing to use an adequate method of contraception, from the first dose of the study medication through 120 days after the last dose of study medication

Exclusion criteria

* Has had prior radiation to affected area * Has one of the following sarcoma subtypes where neoadjuvant chemotherapy is established as practice at our institution: extra-skeletal Ewing's sarcoma, embryonal rhabdomyosarcoma, alveolar rhabdomyosarcoma \* NOTE: Pleomorphic rhabdomyosarcoma is allowed. Bone sarcomas including osteosarcoma, Ewing's sarcoma and chondrosarcoma are not allowed. Extra-skeletal Osteosarcoma is considered a soft tissue sarcoma and is allowed. * Has a diagnosis of immunodeficiency or has an active autoimmune disease that has required systemic treatment in the past 2 years except replacement therapy (e.g., thyroxine, insulin, or physiologic corticosteroid) * Is receiving systemic steroid therapy or any other form of immunosuppressive therapy within 7 days prior to the first dose of trial treatment * Has a known history of active TB (Bacillus tuberculosis) * Hypersensitivity (\>= grade 3) to pembrolizumab and/or any of its excipients * Has a history of a second malignancy, unless potentially curative treatment has been completed with no evidence of malignancy for 2 years \* NOTE: The time requirement does not apply to participants who underwent successful definitive resection of basal cell carcinoma of the skin, squamous cell carcinoma of the skin, superficial bladder cancer, in situ cervical cancer, or other in-situ cancers * Has current or a history of any distant metastatic disease (including brain) \*NOTE: An isolated or oligo-metastatic regional recurrence may be allowed if all other criteria are met, curative attempt is being pursued * Has known history of (non-infectious) pneumonitis that required steroids, or has current evidence of pneumonitis * Has an active infection requiring systemic therapy * Has known psychiatric or substance abuse disorders that would interfere with adherence to the requirements of the trial * Is pregnant (positive urine pregnancy test within 72 hours prior to enrollment) or breastfeeding, or expecting to conceive or father children within the projected duration of the trial, starting with the pre-screening or screening visit through 120 days after the last dose of trial treatment. If a urine pregnancy test is positive or cannot be confirmed negative, a serum pregnancy test will be required * Has received prior therapy with an anti-PD-1, anti-PD-L1, anti-CTLA4 or anti-PD-L2 agent or with an agent directed to another stimulatory or co-inhibitory 1-cell receptor (eg, CTLA-4, OX 40, CD137) * Has a known history of human immunodeficiency virus (HIV) infection * Has a known history of Hepatitis B (e.g., hepatitis B surface antigen \[HBsAg\] reactive) or Hepatitis C (e.g., hepatitis C virus \[HCV\] ribonucleic acid \[RNA\] \[qualitative\] is detected) infection * Has received a live vaccine or live-attenuated vaccine within 30 days of planned start of study therapy. Administration of killed vaccines is allowed. Note: Any licensed coronavirus (COVID-19) vaccine (including for emergency use) is allowed in the study as long as they are messenger ribonucleic acid (mRNA) vaccines, adenoviral vaccines, or inactivated vaccines. These vaccines will be treated just as any other concomitant therapy. Investigational vaccines (i.e., those not licensed or approved for emergency use) are not allowed. * Has received an investigational agent or has used an investigational device within 4 weeks prior to study intervention administration * Has a history or current evidence of any condition, therapy, or laboratory abnormality or other circumstance that might confound the results of the study, interfere with the subject's participation for the full duration of the study, such that it is not in the best interest of the subject to participate, in the opinion of the treating investigator or has not adequately recovered from any major surgery or has ongoing surgical complications * Has had an allogenic tissue/solid organ transplant

Design outcomes

Primary

MeasureTime frameDescription
Rate of Complete Tumor NecrosisFrom baseline through wound care follow-up visit (up to 8 months)Necrosis greater than or equal to 90% at pathologic assessment at time of surgery

Secondary

MeasureTime frameDescription
Incidence of Adverse EventsThrough the wound care follow-up visit (up to 8 months)Treatment-related adverse events (AEs) experienced by participants evaluated by Common Terminology Criteria for Adverse Events (CTCAE) 5.0 and determined to be possibly related, probably related, or definitely related to either pembrolizumab therapy, radiation therapy, or both.
Partial Response RateFrom baseline through wound care follow-up visit (up to 8 months)Proportion of patients who achieved a partial response based on modified Response Evaluation Criteria in Solid Tumors (RECIST) Version 1.1. Per Response Evaluation Criteria In Solid Tumors Criteria (RECIST v1.1) for target lesions and assessed by CT: Complete Response (CR), Disappearance of all target lesions; Partial Response (PR), \>=30% decrease in the sum of the diameters of target lesions, taking as reference the baseline sum diameters; Overall Response (OR) = CR + PR.
Complete Response RateFrom baseline through wound care follow-up visit (up to 8 months)Rate of disappearance of all target lesions. Any pathological lymph nodes (whether target or non-target) must have reduction in short axis to \<10mm as defined per RECIST v1.1. Per Response Evaluation Criteria In Solid Tumors Criteria (RECIST v1.1) for target lesions and assessed by CT: Complete Response (CR), Disappearance of all target lesions; Partial Response (PR), \>=30% decrease in the sum of the diameters of target lesions, taking as reference the baseline sum diameters; Overall Response (OR) = CR + PR.
Overall Response RateFrom baseline through wound care follow-up visit (up to 8 months)Rate of participants who experienced a Complete Response (CR) + Partial Reponse (PR) as defined per RECIST v1.1 criteria. Per Response Evaluation Criteria In Solid Tumors Criteria (RECIST v1.1) for target lesions and assessed by CT: Complete Response (CR), Disappearance of all target lesions; Partial Response (PR), \>=30% decrease in the sum of the diameters of target lesions, taking as reference the baseline sum diameters; Overall Response (OR) = CR + PR.

Countries

United States

Participant flow

Participants by arm

ArmCount
Treatment (Pembrolizumab, Radiation Therapy)
Patients receive pembrolizumab IV over 30 minutes on day 1. Cycles repeat every 3 weeks for 3 months in the absence of disease progression or unacceptable toxicity. Patients also undergo radiation therapy daily for 5-6 weeks. Pembrolizumab: Given IV Radiation Therapy: Undergo radiation therapy
27
Total27

Withdrawals & dropouts

PeriodReasonFG000
Overall StudyPatients remain in Long-Term Follow-Up17
Overall StudyPhysician Decision1

Baseline characteristics

CharacteristicTreatment (Pembrolizumab, Radiation Therapy)
Age, Customized
Aged 18-29 at Enrollment
1 Participants
Age, Customized
Aged 30-39 at Enrollment
1 Participants
Age, Customized
Aged 40-49 at Enrollment
2 Participants
Age, Customized
Aged 50-59 at Enrollment
4 Participants
Age, Customized
Aged 60-69 at Enrollment
9 Participants
Age, Customized
Aged 70 and Above at Enrollment
10 Participants
Age, Customized
Aged Under 18 at Enrollment
0 Participants
Ethnicity (NIH/OMB)
Hispanic or Latino
1 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
25 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
1 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants
Race (NIH/OMB)
Asian
2 Participants
Race (NIH/OMB)
Black or African American
1 Participants
Race (NIH/OMB)
More than one race
0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
1 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants
Race (NIH/OMB)
White
23 Participants
Sex: Female, Male
Female
14 Participants
Sex: Female, Male
Male
13 Participants

Adverse events

Event typeEG000
affected / at risk
deaths
Total, all-cause mortality
0 / 27
other
Total, other adverse events
17 / 27
serious
Total, serious adverse events
5 / 27

Outcome results

Primary

Rate of Complete Tumor Necrosis

Necrosis greater than or equal to 90% at pathologic assessment at time of surgery

Time frame: From baseline through wound care follow-up visit (up to 8 months)

Population: 24 out of 27 participants evaluable for the primary endpoint. 4 participants experienced necrosis greater than 90%.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Treatment (Pembrolizumab, Radiation Therapy)Rate of Complete Tumor Necrosis4 Participants
Secondary

Complete Response Rate

Rate of disappearance of all target lesions. Any pathological lymph nodes (whether target or non-target) must have reduction in short axis to \<10mm as defined per RECIST v1.1. Per Response Evaluation Criteria In Solid Tumors Criteria (RECIST v1.1) for target lesions and assessed by CT: Complete Response (CR), Disappearance of all target lesions; Partial Response (PR), \>=30% decrease in the sum of the diameters of target lesions, taking as reference the baseline sum diameters; Overall Response (OR) = CR + PR.

Time frame: From baseline through wound care follow-up visit (up to 8 months)

Population: 26 out of 27 participants evaluable for this endpoint.

ArmMeasureValue (NUMBER)
Treatment (Pembrolizumab, Radiation Therapy)Complete Response Rate0.00 proportion of participants
Secondary

Incidence of Adverse Events

Treatment-related adverse events (AEs) experienced by participants evaluated by Common Terminology Criteria for Adverse Events (CTCAE) 5.0 and determined to be possibly related, probably related, or definitely related to either pembrolizumab therapy, radiation therapy, or both.

Time frame: Through the wound care follow-up visit (up to 8 months)

Population: All participants evaluable for adverse events.

ArmMeasureGroupValue (NUMBER)
Treatment (Pembrolizumab, Radiation Therapy)Incidence of Adverse EventsBullous dermatitis2 events experienced
Treatment (Pembrolizumab, Radiation Therapy)Incidence of Adverse EventsVaginal hemorrhage0 events experienced
Treatment (Pembrolizumab, Radiation Therapy)Incidence of Adverse EventsLymphocyte count decreased0 events experienced
Treatment (Pembrolizumab, Radiation Therapy)Incidence of Adverse EventsLocalized edema1 events experienced
Treatment (Pembrolizumab, Radiation Therapy)Incidence of Adverse EventsPneumothorax1 events experienced
Treatment (Pembrolizumab, Radiation Therapy)Incidence of Adverse EventsNeuralgia1 events experienced
Treatment (Pembrolizumab, Radiation Therapy)Incidence of Adverse EventsDiarrhea5 events experienced
Treatment (Pembrolizumab, Radiation Therapy)Incidence of Adverse EventsWound dehiscence2 events experienced
Treatment (Pembrolizumab, Radiation Therapy)Incidence of Adverse EventsAlanine aminotransferase increased0 events experienced
Treatment (Pembrolizumab, Radiation Therapy)Incidence of Adverse EventsColitis0 events experienced
Treatment (Pembrolizumab, Radiation Therapy)Incidence of Adverse EventsSkin and subcutaneous disorders - Other - Rash1 events experienced
Treatment (Pembrolizumab, Radiation Therapy)Incidence of Adverse EventsFatigue11 events experienced
Treatment (Pembrolizumab, Radiation Therapy)Incidence of Adverse EventsHypothyroidism0 events experienced
Treatment (Pembrolizumab, Radiation Therapy)Incidence of Adverse EventsWeight loss1 events experienced
Treatment (Pembrolizumab, Radiation Therapy)Incidence of Adverse EventsHypokalemia1 events experienced
Treatment (Pembrolizumab, Radiation Therapy)Incidence of Adverse EventsUrinary retention0 events experienced
Treatment (Pembrolizumab, Radiation Therapy)Incidence of Adverse EventsHypomagnesemia1 events experienced
Treatment (Pembrolizumab, Radiation Therapy)Incidence of Adverse EventsNausea1 events experienced
Treatment (Pembrolizumab, Radiation Therapy)Incidence of Adverse EventsDry skin1 events experienced
Treatment (Pembrolizumab, Radiation Therapy)Incidence of Adverse EventsSkin and subcutaneous disorders - Other - Erythema2 events experienced
Treatment (Pembrolizumab, Radiation Therapy)Incidence of Adverse EventsTumor pain2 events experienced
Treatment (Pembrolizumab, Radiation Therapy)Incidence of Adverse EventsUrinary urgency1 events experienced
Treatment (Pembrolizumab, Radiation Therapy)Incidence of Adverse EventsPain in extremity1 events experienced
Treatment (Pembrolizumab, Radiation Therapy)Incidence of Adverse EventsDermatitis Radiation12 events experienced
Treatment (Pembrolizumab, Radiation Therapy)Incidence of Adverse EventsPeripheral sensory neuropathy1 events experienced
Treatment (Pembrolizumab, Radiation Therapy)Incidence of Adverse EventsPruritus0 events experienced
Treatment (Pembrolizumab, Radiation Therapy)Incidence of Adverse EventsAspartate aminotransferase increased0 events experienced
Treatment (Pembrolizumab, Radiation Therapy)Incidence of Adverse EventsAnorexia1 events experienced
Treatment (Pembrolizumab, Radiation Therapy)Incidence of Adverse EventsDizziness1 events experienced
Treatment (Pembrolizumab, Radiation Therapy)Incidence of Adverse EventsPeripheral ischemia0 events experienced
Treatment (Pembrolizumab, Radiation Therapy)Incidence of Adverse EventsCough1 events experienced
Treatment (Pembrolizumab, Radiation Therapy)Incidence of Adverse EventsThromboembolic event0 events experienced
Treatment (Pembrolizumab, Radiation Therapy)Incidence of Adverse EventsEdema limbs2 events experienced
Treatment (Pembrolizumab, Radiation Therapy)Incidence of Adverse EventsWound infection0 events experienced
Treatment (Pembrolizumab, Radiation Therapy)Incidence of Adverse EventsDehydration0 events experienced
Treatment (Pembrolizumab, Radiation Therapy)Incidence of Adverse EventsRectal pain1 events experienced
Treatment (Pembrolizumab, Radiation Therapy)Incidence of Adverse EventsPelvic pain1 events experienced
Treatment (Pembrolizumab, Radiation Therapy)Incidence of Adverse EventsAnemia0 events experienced
Treatment (Pembrolizumab, Radiation Therapy)Incidence of Adverse EventsRash maculo-papular5 events experienced
Treatment (Pembrolizumab, Radiation Therapy)Incidence of Adverse EventsThyroid Stimulating Hormone Increased1 events experienced
Treatment (Pembrolizumab, Radiation Therapy)Incidence of Adverse EventsChest wall pain0 events experienced
Treatment (Pembrolizumab, Radiation Therapy)Incidence of Adverse EventsBlood and lymphatic system disorders - Other - Eosinophil count increased1 events experienced
Grade 2 EventsIncidence of Adverse EventsCough0 events experienced
Grade 2 EventsIncidence of Adverse EventsBullous dermatitis0 events experienced
Grade 2 EventsIncidence of Adverse EventsBlood and lymphatic system disorders - Other - Eosinophil count increased0 events experienced
Grade 2 EventsIncidence of Adverse EventsUrinary urgency0 events experienced
Grade 2 EventsIncidence of Adverse EventsSkin and subcutaneous disorders - Other - Erythema0 events experienced
Grade 2 EventsIncidence of Adverse EventsDermatitis Radiation7 events experienced
Grade 2 EventsIncidence of Adverse EventsDizziness0 events experienced
Grade 2 EventsIncidence of Adverse EventsAlanine aminotransferase increased1 events experienced
Grade 2 EventsIncidence of Adverse EventsChest wall pain1 events experienced
Grade 2 EventsIncidence of Adverse EventsDiarrhea1 events experienced
Grade 2 EventsIncidence of Adverse EventsLocalized edema0 events experienced
Grade 2 EventsIncidence of Adverse EventsAspartate aminotransferase increased0 events experienced
Grade 2 EventsIncidence of Adverse EventsColitis1 events experienced
Grade 2 EventsIncidence of Adverse EventsPneumothorax0 events experienced
Grade 2 EventsIncidence of Adverse EventsPelvic pain0 events experienced
Grade 2 EventsIncidence of Adverse EventsVaginal hemorrhage0 events experienced
Grade 2 EventsIncidence of Adverse EventsDry skin0 events experienced
Grade 2 EventsIncidence of Adverse EventsFatigue3 events experienced
Grade 2 EventsIncidence of Adverse EventsWound infection0 events experienced
Grade 2 EventsIncidence of Adverse EventsPruritus1 events experienced
Grade 2 EventsIncidence of Adverse EventsTumor pain2 events experienced
Grade 2 EventsIncidence of Adverse EventsDehydration1 events experienced
Grade 2 EventsIncidence of Adverse EventsSkin and subcutaneous disorders - Other - Rash0 events experienced
Grade 2 EventsIncidence of Adverse EventsLymphocyte count decreased3 events experienced
Grade 2 EventsIncidence of Adverse EventsWeight loss0 events experienced
Grade 2 EventsIncidence of Adverse EventsRash maculo-papular3 events experienced
Grade 2 EventsIncidence of Adverse EventsWound dehiscence1 events experienced
Grade 2 EventsIncidence of Adverse EventsHypomagnesemia0 events experienced
Grade 2 EventsIncidence of Adverse EventsHypothyroidism4 events experienced
Grade 2 EventsIncidence of Adverse EventsNausea2 events experienced
Grade 2 EventsIncidence of Adverse EventsHypokalemia0 events experienced
Grade 2 EventsIncidence of Adverse EventsUrinary retention1 events experienced
Grade 2 EventsIncidence of Adverse EventsRectal pain0 events experienced
Grade 2 EventsIncidence of Adverse EventsPain in extremity1 events experienced
Grade 2 EventsIncidence of Adverse EventsThyroid Stimulating Hormone Increased0 events experienced
Grade 2 EventsIncidence of Adverse EventsThromboembolic event1 events experienced
Grade 2 EventsIncidence of Adverse EventsAnorexia1 events experienced
Grade 2 EventsIncidence of Adverse EventsNeuralgia0 events experienced
Grade 2 EventsIncidence of Adverse EventsEdema limbs0 events experienced
Grade 2 EventsIncidence of Adverse EventsPeripheral ischemia0 events experienced
Grade 2 EventsIncidence of Adverse EventsPeripheral sensory neuropathy0 events experienced
Grade 2 EventsIncidence of Adverse EventsAnemia1 events experienced
Grade 3 EventsIncidence of Adverse EventsDehydration0 events experienced
Grade 3 EventsIncidence of Adverse EventsRectal pain0 events experienced
Grade 3 EventsIncidence of Adverse EventsWeight loss0 events experienced
Grade 3 EventsIncidence of Adverse EventsChest wall pain0 events experienced
Grade 3 EventsIncidence of Adverse EventsPeripheral sensory neuropathy0 events experienced
Grade 3 EventsIncidence of Adverse EventsCough0 events experienced
Grade 3 EventsIncidence of Adverse EventsThyroid Stimulating Hormone Increased0 events experienced
Grade 3 EventsIncidence of Adverse EventsHypokalemia0 events experienced
Grade 3 EventsIncidence of Adverse EventsRash maculo-papular0 events experienced
Grade 3 EventsIncidence of Adverse EventsPeripheral ischemia0 events experienced
Grade 3 EventsIncidence of Adverse EventsBlood and lymphatic system disorders - Other - Eosinophil count increased0 events experienced
Grade 3 EventsIncidence of Adverse EventsVaginal hemorrhage1 events experienced
Grade 3 EventsIncidence of Adverse EventsDiarrhea0 events experienced
Grade 3 EventsIncidence of Adverse EventsTumor pain0 events experienced
Grade 3 EventsIncidence of Adverse EventsPelvic pain0 events experienced
Grade 3 EventsIncidence of Adverse EventsLymphocyte count decreased1 events experienced
Grade 3 EventsIncidence of Adverse EventsHypomagnesemia0 events experienced
Grade 3 EventsIncidence of Adverse EventsWound dehiscence1 events experienced
Grade 3 EventsIncidence of Adverse EventsHypothyroidism0 events experienced
Grade 3 EventsIncidence of Adverse EventsNausea0 events experienced
Grade 3 EventsIncidence of Adverse EventsThromboembolic event0 events experienced
Grade 3 EventsIncidence of Adverse EventsPain in extremity0 events experienced
Grade 3 EventsIncidence of Adverse EventsUrinary retention0 events experienced
Grade 3 EventsIncidence of Adverse EventsAnorexia0 events experienced
Grade 3 EventsIncidence of Adverse EventsEdema limbs0 events experienced
Grade 3 EventsIncidence of Adverse EventsColitis0 events experienced
Grade 3 EventsIncidence of Adverse EventsNeuralgia0 events experienced
Grade 3 EventsIncidence of Adverse EventsAnemia1 events experienced
Grade 3 EventsIncidence of Adverse EventsUrinary urgency0 events experienced
Grade 3 EventsIncidence of Adverse EventsBullous dermatitis0 events experienced
Grade 3 EventsIncidence of Adverse EventsSkin and subcutaneous disorders - Other - Erythema0 events experienced
Grade 3 EventsIncidence of Adverse EventsDizziness0 events experienced
Grade 3 EventsIncidence of Adverse EventsDermatitis Radiation0 events experienced
Grade 3 EventsIncidence of Adverse EventsLocalized edema0 events experienced
Grade 3 EventsIncidence of Adverse EventsAlanine aminotransferase increased0 events experienced
Grade 3 EventsIncidence of Adverse EventsSkin and subcutaneous disorders - Other - Rash0 events experienced
Grade 3 EventsIncidence of Adverse EventsAspartate aminotransferase increased1 events experienced
Grade 3 EventsIncidence of Adverse EventsPneumothorax0 events experienced
Grade 3 EventsIncidence of Adverse EventsWound infection1 events experienced
Grade 3 EventsIncidence of Adverse EventsDry skin0 events experienced
Grade 3 EventsIncidence of Adverse EventsPruritus0 events experienced
Grade 3 EventsIncidence of Adverse EventsFatigue0 events experienced
Grade 4 EventsIncidence of Adverse EventsBlood and lymphatic system disorders - Other - Eosinophil count increased0 events experienced
Grade 4 EventsIncidence of Adverse EventsChest wall pain0 events experienced
Grade 4 EventsIncidence of Adverse EventsUrinary urgency0 events experienced
Grade 4 EventsIncidence of Adverse EventsPelvic pain0 events experienced
Grade 4 EventsIncidence of Adverse EventsUrinary retention0 events experienced
Grade 4 EventsIncidence of Adverse EventsDermatitis Radiation0 events experienced
Grade 4 EventsIncidence of Adverse EventsFatigue0 events experienced
Grade 4 EventsIncidence of Adverse EventsRash maculo-papular0 events experienced
Grade 4 EventsIncidence of Adverse EventsDiarrhea0 events experienced
Grade 4 EventsIncidence of Adverse EventsTumor pain0 events experienced
Grade 4 EventsIncidence of Adverse EventsLymphocyte count decreased0 events experienced
Grade 4 EventsIncidence of Adverse EventsWound dehiscence0 events experienced
Grade 4 EventsIncidence of Adverse EventsHypothyroidism0 events experienced
Grade 4 EventsIncidence of Adverse EventsNausea0 events experienced
Grade 4 EventsIncidence of Adverse EventsPain in extremity0 events experienced
Grade 4 EventsIncidence of Adverse EventsAnorexia0 events experienced
Grade 4 EventsIncidence of Adverse EventsEdema limbs0 events experienced
Grade 4 EventsIncidence of Adverse EventsAnemia0 events experienced
Grade 4 EventsIncidence of Adverse EventsBullous dermatitis0 events experienced
Grade 4 EventsIncidence of Adverse EventsSkin and subcutaneous disorders - Other - Erythema0 events experienced
Grade 4 EventsIncidence of Adverse EventsDizziness0 events experienced
Grade 4 EventsIncidence of Adverse EventsAlanine aminotransferase increased0 events experienced
Grade 4 EventsIncidence of Adverse EventsAspartate aminotransferase increased0 events experienced
Grade 4 EventsIncidence of Adverse EventsPneumothorax0 events experienced
Grade 4 EventsIncidence of Adverse EventsDry skin0 events experienced
Grade 4 EventsIncidence of Adverse EventsPruritus0 events experienced
Grade 4 EventsIncidence of Adverse EventsDehydration0 events experienced
Grade 4 EventsIncidence of Adverse EventsWeight loss0 events experienced
Grade 4 EventsIncidence of Adverse EventsPeripheral sensory neuropathy0 events experienced
Grade 4 EventsIncidence of Adverse EventsCough0 events experienced
Grade 4 EventsIncidence of Adverse EventsHypokalemia0 events experienced
Grade 4 EventsIncidence of Adverse EventsPeripheral ischemia1 events experienced
Grade 4 EventsIncidence of Adverse EventsThyroid Stimulating Hormone Increased0 events experienced
Grade 4 EventsIncidence of Adverse EventsRectal pain0 events experienced
Grade 4 EventsIncidence of Adverse EventsWound infection0 events experienced
Grade 4 EventsIncidence of Adverse EventsLocalized edema0 events experienced
Grade 4 EventsIncidence of Adverse EventsNeuralgia0 events experienced
Grade 4 EventsIncidence of Adverse EventsThromboembolic event0 events experienced
Grade 4 EventsIncidence of Adverse EventsHypomagnesemia0 events experienced
Grade 4 EventsIncidence of Adverse EventsVaginal hemorrhage0 events experienced
Grade 4 EventsIncidence of Adverse EventsColitis0 events experienced
Grade 4 EventsIncidence of Adverse EventsSkin and subcutaneous disorders - Other - Rash0 events experienced
Grade 5 EventsIncidence of Adverse EventsRectal pain0 events experienced
Grade 5 EventsIncidence of Adverse EventsPruritus0 events experienced
Grade 5 EventsIncidence of Adverse EventsDry skin0 events experienced
Grade 5 EventsIncidence of Adverse EventsPneumothorax0 events experienced
Grade 5 EventsIncidence of Adverse EventsUrinary retention0 events experienced
Grade 5 EventsIncidence of Adverse EventsWound infection0 events experienced
Grade 5 EventsIncidence of Adverse EventsAspartate aminotransferase increased0 events experienced
Grade 5 EventsIncidence of Adverse EventsAlanine aminotransferase increased0 events experienced
Grade 5 EventsIncidence of Adverse EventsDizziness0 events experienced
Grade 5 EventsIncidence of Adverse EventsSkin and subcutaneous disorders - Other - Rash0 events experienced
Grade 5 EventsIncidence of Adverse EventsLocalized edema0 events experienced
Grade 5 EventsIncidence of Adverse EventsSkin and subcutaneous disorders - Other - Erythema0 events experienced
Grade 5 EventsIncidence of Adverse EventsBullous dermatitis0 events experienced
Grade 5 EventsIncidence of Adverse EventsAnemia0 events experienced
Grade 5 EventsIncidence of Adverse EventsEdema limbs0 events experienced
Grade 5 EventsIncidence of Adverse EventsColitis0 events experienced
Grade 5 EventsIncidence of Adverse EventsNeuralgia0 events experienced
Grade 5 EventsIncidence of Adverse EventsAnorexia0 events experienced
Grade 5 EventsIncidence of Adverse EventsPain in extremity0 events experienced
Grade 5 EventsIncidence of Adverse EventsNausea0 events experienced
Grade 5 EventsIncidence of Adverse EventsPelvic pain0 events experienced
Grade 5 EventsIncidence of Adverse EventsThromboembolic event0 events experienced
Grade 5 EventsIncidence of Adverse EventsHypothyroidism0 events experienced
Grade 5 EventsIncidence of Adverse EventsWound dehiscence0 events experienced
Grade 5 EventsIncidence of Adverse EventsLymphocyte count decreased0 events experienced
Grade 5 EventsIncidence of Adverse EventsUrinary urgency0 events experienced
Grade 5 EventsIncidence of Adverse EventsHypomagnesemia0 events experienced
Grade 5 EventsIncidence of Adverse EventsTumor pain0 events experienced
Grade 5 EventsIncidence of Adverse EventsDiarrhea0 events experienced
Grade 5 EventsIncidence of Adverse EventsRash maculo-papular0 events experienced
Grade 5 EventsIncidence of Adverse EventsChest wall pain0 events experienced
Grade 5 EventsIncidence of Adverse EventsVaginal hemorrhage0 events experienced
Grade 5 EventsIncidence of Adverse EventsBlood and lymphatic system disorders - Other - Eosinophil count increased0 events experienced
Grade 5 EventsIncidence of Adverse EventsPeripheral ischemia0 events experienced
Grade 5 EventsIncidence of Adverse EventsHypokalemia0 events experienced
Grade 5 EventsIncidence of Adverse EventsCough0 events experienced
Grade 5 EventsIncidence of Adverse EventsFatigue0 events experienced
Grade 5 EventsIncidence of Adverse EventsThyroid Stimulating Hormone Increased0 events experienced
Grade 5 EventsIncidence of Adverse EventsPeripheral sensory neuropathy0 events experienced
Grade 5 EventsIncidence of Adverse EventsWeight loss0 events experienced
Grade 5 EventsIncidence of Adverse EventsDehydration0 events experienced
Grade 5 EventsIncidence of Adverse EventsDermatitis Radiation0 events experienced
Secondary

Overall Response Rate

Rate of participants who experienced a Complete Response (CR) + Partial Reponse (PR) as defined per RECIST v1.1 criteria. Per Response Evaluation Criteria In Solid Tumors Criteria (RECIST v1.1) for target lesions and assessed by CT: Complete Response (CR), Disappearance of all target lesions; Partial Response (PR), \>=30% decrease in the sum of the diameters of target lesions, taking as reference the baseline sum diameters; Overall Response (OR) = CR + PR.

Time frame: From baseline through wound care follow-up visit (up to 8 months)

Population: 26 out of 27 participants evaluable for this endpoint.

ArmMeasureValue (NUMBER)
Treatment (Pembrolizumab, Radiation Therapy)Overall Response Rate0.08 proportion of participants
Secondary

Partial Response Rate

Proportion of patients who achieved a partial response based on modified Response Evaluation Criteria in Solid Tumors (RECIST) Version 1.1. Per Response Evaluation Criteria In Solid Tumors Criteria (RECIST v1.1) for target lesions and assessed by CT: Complete Response (CR), Disappearance of all target lesions; Partial Response (PR), \>=30% decrease in the sum of the diameters of target lesions, taking as reference the baseline sum diameters; Overall Response (OR) = CR + PR.

Time frame: From baseline through wound care follow-up visit (up to 8 months)

Population: 26 out of 27 participants evaluable for this endpoint.

ArmMeasureValue (NUMBER)
Treatment (Pembrolizumab, Radiation Therapy)Partial Response Rate0.08 proportion of participants

Source: ClinicalTrials.gov · Data processed: May 29, 2026