The UNSCARRed Study: UNresctable Squamous Cell Carcinoma Treated With Avelumab and Radical Radiotherapy (UNSCARRed)

  • STATUS
    Recruiting
  • End date
    Jun 30, 2023
  • participants needed
    20
  • sponsor
    AHS Cancer Control Alberta
Updated on 3 February 2022
platelet count
cancer
measurable disease
anticoagulants
non-melanoma skin cancer
oophorectomy
neutrophil count
serum follicle stimulating hormone

Summary

The purpose of this study is to find out what effects the combination of radiation therapy and Avelumab have on you and your cancer. The effectiveness of this treatment as well as what side effects occur will both be studied.

Squamous cell carcinoma of the skin is the most commonly diagnosed cancer. Risk factors for the development of squamous cell cancer include ultraviolet (sun) exposure, as well as increasing age. In the majority of instances, a minor surgical procedure is curative. Less commonly, squamous cell carcinoma cannot be removed surgically, due to the location and/or extent of the cancer, or due to patient-specific factors which would make surgery unsafe (for instance, the presence of unrelated medical illnesses such as heart disease or stroke).

When squamous cell carcinoma cannot be removed surgically, radiation therapy may serve as an effective alternative treatment. Squamous cell carcinomas are typically very sensitive to radiation, and in some instances radiation therapy may also cure a person of their cancer.

While some people may be cured by radiation therapy, not all people are. This study is investigating the combination of radiation therapy and immune therapy. When given together, more patients may be cured of their cancer.

Immune therapy is effective for the treatment of squamous cell carcinoma. In clinical trials, more than half of patients benefit from immune therapy. Immune therapy is not chemotherapy. Instead, immune therapy involves the infusion of antibodies which target a person's own immune system. Immune therapy "re-activates" a person's own immune system against their cancer.

The treatment offered within this clinical trial includes daily radiation treatments as well as immunotherapy treatments administered once every two weeks. The immunotherapy in use is a drug called Avelumab, which is an antibody that helps your body's immune system fight cancer.

Health Canada, the regulatory body that oversees the use of natural health products, drugs and devices in Canada, has not approved the sale or use of this product to treat this kind of cancer, although they have allowed its use in this study

Description

The treatment of patients with unresectable cuSCC is challenging, and represents an area of high unmet need. Treatment options within this patient population are limited; hence most patients undergo monotherapy with radiation leading to suboptimal outcomes. Inadequately treated disease may cause high morbidity, negatively impacting quality of life and leading to increased costs for supportive care. To address the unmet needs of these patients, we propose an exploratory trial combining Avelumab with radiation therapy, with an investigational plan to study clinical and health services outcomes. Cutaneous squamous cell carcinoma also represents a unique opportunity for correlative studies, given the accessibility of disease. The schedule of patient biopsies has been designed to allow analyses following treatment with Avelumab monotherapy as well as concurrent Avelumab/RT. We therefore propose additional biomarker outcomes, which may improve the care of patients with cuSCC as well as those with a host of solid tumors already sensitive to immunotherapy.

  • Patients with cuSCC deemed unresectable (TxNxM0 - stage I-IV, M0);
  • Prior to screening, patients will be reviewed at a bi-monthly multi-disciplinary cutaneous tumor board to determine unresectability; representatives from dermatology, pathology, medical oncology, radiation oncology, general surgery, and if deemed necessary, plastic surgery will be included;
  • Patients must possess an Eastern Co-operative Oncology Group (ECOG) performance status 2 This study has been designed as an open-label, non-randomized, single-arm phase II study to investigate the feasibility and efficacy of Avelumab in combination with radiation therapy in patients with unresectable cuSCC.

All evaluable patients will be evaluated using identical instruments, and analysis will be by intent-to-treat. Toxicity will be assessed using standardized criteria (CTCAE version 4.03) by trained trial staff. Quality of life instruments will be administered to patients prior to their medical assessments. Every effort will be made to limit lost or missing data and incomplete follow-up.

Based on the primary objective of the study sample size of 20 patients is proposed.

This sample size calculation is based on the historical response rate associated with radiation therapy of 50%. The investigators predict an improvement in response using Avelumab and radiation therapy of 30%, in other words a net overall response rate of 80%. Utilizing a one-sided, binomial hypothesis test with a target p value of 0.05, the total sample size would be 18 to achieve a power of 80% for the study. The null hypothesis will be rejected if 13 out of 18 patients demonstrate an objective tumor response following treatment, indicating further study is warranted. Assuming a dropout rate of 10% (patient dropout defined as voluntary withdrawal from active therapy prior to completion of treatment), an additional 2 patients would have to be enrolled, bringing the total target enrollment to 20 patients.

The total duration of accrual is anticipated to last 26 months. With a maximum follow-up of 24 months following treatment of the eighteenth patient enrolled to study, the maximum study duration is not anticipated to exceed 50 months.

The provision of a tumor biopsy is optional, but strongly encouraged. For those patients who consent to tumor biopsy, samples (either punch, needle-core or shave-biopsy) will be obtained in advance of treatment, 2 weeks post first cycle of Avelumab (but before the initiation of radiation therapy) and in conjunction with the 30-day safety analysis.

An electronic data capture system will be used in this trial. A case report form (CRF) will have to be completed for each consented patient. The site maintains a separate source of data. This data will be entered by the site into the electronic data capture system This study is proposed as a phase II study with objective response rate as the primary endpoint. Refer to section 3.3.1 for the estimated calculation of study sample size.

If the study conduct (e.g. recruitment rate, drop-out rate, data quality, protocol compliance) does not suggest a proper completion of the study within a reasonable time frame the trial will be terminated. This will be done in consultation with the CCI DSMB.

The trial activities performed at the CCI will be monitored by the Cross Cancer Institute, Investigator Initiated Trials Data Safety Monitoring Board. The DSMB is independent of the investigator and is composed of representatives from both medical and radiation oncology. Further details about its charter can be found by contacting the Project Manager, Investigator Initiated Clinical Trials at the Cross Cancer institute.

Details
Condition Squamous Cell Carcinoma of the Skin
Treatment Avelumab and Radical radiotherapy
Clinical Study IdentifierNCT03737721
SponsorAHS Cancer Control Alberta
Last Modified on3 February 2022

Eligibility

Yes No Not Sure

Inclusion Criteria

Patients must be 18 years of age or older
Patients with histologically confirmed, unresectable cuSCC, stage I-IV (M0)
Patients must be capable of providing consent to enrolment and treatment
Patients with a performance status of ECOG 0-2 will be eligible for enrolment
Measurable disease must be present according to RECIST 1.1 criteria
Women of child bearing potential (WOCBP) must have a negative serum (or urine) pregnancy test at the time of screening. WOCBP is defined as any female who has experienced menarche and who has not undergone surgical sterilization (hysterectomy or bilateral oophorectomy or bilateral salpingectomy) and is not postmenopausal. Menopause is defined as 12 months of amenorrhea in a woman over age 45 years in the absence of other biological or physiological causes. In addition, females under the age of 55 years must have a serum follicle stimulating hormone, (FSH) level > 40 mIU/mL to confirm menopause
Patients of childbearing / reproductive potential should use highly effective birth control methods, as defined by the investigator, during the study treatment period and for a period of 30 days after the last dose of study drug. A highly effective method of birth control is defined as those that result in low failure rate (i.e. less than 1% per year) when used consistently and correctly
Note: abstinence is acceptable if this is established and preferred
contraception for the patient and is accepted as a local standard
\. Female patients who are breast-feeding should discontinue nursing prior to
the first dose of study treatment and until 30 days after the last dose of
study drug
\. Male patients should agree to not donate sperm during the study and for a
period of at least 30 days after last dose of study drug
\. Absence of any condition hampering compliance with the study protocol and
follow- up schedule; those conditions should be discussed with the patient
before registration in the trial
\. The following adequate organ function laboratory values must be met
Hematological
Absolute neutrophil count (ANC) >1.5 x109/L
Platelet count >100 x109/L
Hemoglobin >9 g/dL (may have been transfused)
Renal
Estimated creatinine clearance 30 mL/min according to the Cockcroft-Gault formula (or local institutional standard method)
Hepatic
Total serum bilirubin <1.5x ULN
AST and ALT <2.5x ULN
Coagulation
International Normalized Ratio (INR) <1.5x ULN (unless patient is receiving anticoagulant therapy as long as prothrombin time (PT) or activated partial thromboplastin time (PTT) is within therapeutic range of intended use of anticoagulants)
PTT <1.5x ULN (unless patient is receiving anticoagulant therapy as long as PT or PTT is within therapeutic range of intended use of anticoagulants)

Exclusion Criteria

History of pneumonitis requiring treatment with steroids
History of active interstitial lung disease
Clinically significant (i.e., active) cardiovascular disease: cerebral vascular accident/stroke (< 6 months prior to enrollment), myocardial infarction (< 6 months prior to enrollment), unstable angina, congestive heart failure ( New York Heart Association Classification Class II), or serious cardiac arrhythmia requiring medication
History of another malignancy or a concurrent malignancy; Exceptions include patients who have been disease-free for 3 years, or patients with a history of completely resected non-melanoma skin cancer or successfully treated in situ carcinoma are eligible, for example cervical cancer in situ
Diagnosis of immunodeficiency
Current use of immunosuppressive medication, EXCEPT for the following: a. intranasal, inhaled, topical steroids, or local steroid injection (e.g., intra-articular injection); b. Systemic corticosteroids at physiologic doses 10 mg/day of prednisone or equivalent; c. Steroids as premedication for hypersensitivity reactions (e.g., CT scan premedication)
Prior organ transplantation including allogeneic stem-cell transplantation
Known history of human immunodeficiency virus (HIV)
Hepatitis B virus (HBV) or hepatitis C virus (HCV) infection at screening (positive HBV surface antigen or HCV ribonucleic acid (RNA) if anti-HCV antibody screening test positive)
Active autoimmune disease that might deteriorate when receiving an immuno-stimulatory agent. Patients with diabetes type I, vitiligo, psoriasis, or hypo- or hyperthyroid diseases not requiring immunosuppressive treatment are eligible
Active infection requiring systemic therapy
Vaccination within 4 weeks of the first dose of Avelumab and while on trials is prohibited except for administration of inactivated vaccines
Patient will not be eligible if the patient is or has an immediate family member (e.g., spouse, parent/legal guardian, sibling or child) who is investigational site or sponsor staff directly involved with this trial, unless prospective independent ethics committee (IEC) approval (by chair or designee) is given allowing exception to this criterion for a specific subject
Known prior severe hypersensitivity to investigational product or any component in its formulations, including known severe hypersensitivity reactions to monoclonal antibodies (CTCAE v4.03 Grade 3)
Other severe acute or chronic medical conditions including inflammatory bowel disease, immune pneumonitis, pulmonary fibrosis or psychiatric conditions including recent (within the past year) or active suicidal ideation or behavior; or laboratory abnormalities that may increase the risk associated with study participation or study treatment administration or may interfere with the interpretation of study results and, in the judgment of the investigator, would make the patient inappropriate for entry into this study
Persisting toxicity related to prior therapy (NCI CTCAE v. 4.03 grade > 1); however, alopecia, sensory neuropathy grade 2, or other toxicities grade 2 not constituting a safety risk based on investigator's judgment are acceptable
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