Sasanlimab As Maintenance Treatment Based on Clinical Response to Neoadjuvant Treatment in Molecularly Categorized Muscle Invasive Bladder Cancer Patients (SASAN-SPARING)

October 2, 2024 updated by: Fundación de investigación HM

Selective Bladder-Sparing Trial with Sasanlimab As Maintenance Treatment Based on Clinical Response to Neoadjuvant Treatment in Molecularly Categorized Muscle Invasive Bladder Cancer Patients

Selective Bladder-Sparing Trial with Sasanlimab as Maintenance Treatment Based On Clinical Response To Neoadjuvant Treatment In Molecularly Categorized Muscle Invasive Bladder Cancer Patients

Study Overview

Status

Not yet recruiting

Conditions

Intervention / Treatment

Detailed Description

All patients will receive 4 cycles of gemcitabine plus cisplatin followed by clinical restaging (Fig.1). After neoadjuvant chemotherapy, patients will be restaged and patients achieving a clinical response (normal cytology, imaging, and cT0/Ta/T1/Tis) will be eligible to proceed without cystectomy and receive maintenance with sasanlimab 300 mg subcutaneous (two product presentations: a vial and a prefilled syringe) every 4 weeks (Q4W) for up to 12 cycles initiating between 3-6 weeks and followed by surveillance (Fig.1). Treatment may be discontinued in case of progression, unacceptable toxicity, patient withdrawal or death. Patients with persistent non-muscle invasive disease (cTa/T1/Tis) at the first evaluation at 12 weeks of maintenance ( after 3 cycles of sasanlimab), will be recommended to undergo cystectomy.

Non clinically responding patients (≥ T2) after neoadjuvant chemotherapy will undergo cystectomy (Fig.1). Patients may undergo late cystectomy throughout the study period in the case of local relapse, following the investigator criteria or according to the patient's choice.

Study Type

Interventional

Enrollment (Estimated)

70

Phase

  • Phase 2

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact Backup

Study Locations

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  1. Patients who sign a written informed consent approved by an IEC for the participation in this trial.
  2. Age ≥ 18 years at the time of consent.
  3. ECOG Performance Status of ≤ 1 within 28 days prior to registration (Appendix 6).
  4. Histological evidence of localized muscle-invasive urothelial cancer of the bladder (i.e., pT2-T4 / N0 / M0). Candidate for cystectomy as per treating physician.
  5. Absence of metastasis as confirmed by CT or MRI scan of pelvis, abdomen and chest no more than 4 weeks pre-enrolenrment.
  6. Patients candidates to receive neoadjuvant therapy with gemcitabine and cisplatin. Note:MVAC treatment will not be allowed.
  7. All subjects must have adequate archival tissue identified at screening (i.e., at least 15 unstained slides or paraffin block). Subjects without archival tissue must be discussed with the Sponsor-investigator.

  8. Adequate organ and bone marrow function as defined below:

    1. Absolute neutrophil count (ANC) ≥ 1.5 x 10^9/L.
    2. Hemoglobin (HgB) ≥ 9 g/dL.
    3. Platelet count ≥ 100 x 10^9/L.
    4. Creatinine ≤ 1.5 or creatinine clearance ≥ 60 mL/min (Cockcroft-Gault formula).
    5. Bilirubin ≤ 1.5 × upper limit of normal (ULN). Note: subjects with Gilbert Syndrome, who have total bilirubin < 3.0 mg/dL are eligible.
    6. Hepatic enzymes Aspartate aminotransferase (AST) and Alanine aminotransferase (ALT) < 3 x ULN.

  9. Female patients must either:

    a. Be of nonchildbearing potential: i. Postmenopausal *(defined as at least 1 year without any menses) prior to screening , or ii. Documented surgically sterile (e.g. hysterectomy, bilateral salpingectomy, bilateral oophorectomy, or bilateral tubal occlusion).

    • Those who are amenorrheic due to an alternative medical cause are not considered postmenopausal and must follow the criteria for childbearing potential subjects. OR b. If of childbearing potential: i. Agree not to try to become pregnant during the study and for at least 6 months after the final study drug administration, ii. And have a negative urine or serum pregnancy test within 7 days prior to Day 1 (females with false positive results and documented verification of negative pregnancy status are eligible for participation), iii. And if heterosexually active, agree to abstinence (if in line with the usual preferred lifestyle of the patient) or consistently use a condom plus 1 form of highly effective birth control (Appendix 7) per locally accepted standards starting at screening and throughout the study period and for at least 6 months after the final study drug administration.
  10. Female patients must agree not to breastfeed or donate ovules starting at screening and throughout the study period, and for at least 6 months after the final study drug administration.
  11. Male patients with a partner with childbearing potential, or who is pregnant or breastfeeding must agree to abstinence or use a condom plus 1 form of highly effective birth control throughout the study period and for at least 6 months after the final study drug administration.
  12. Male patients must not donate sperm starting at screening and throughout the study period, and for at least 6 months after the final study drug administration.
  13. Willing and able to comply with scheduled visits, treatment plan, laboratory tests, and other study procedures.
  14. Patient agrees not to participate in another interventional study while on treatment in the present study

Exclusion Criteria:

  • 1. Prior treatment with systemic chemotherapy or other approved anticancer treatments for muscle-invasive urothelial cancer of the bladder. Note: In case of prior non muscle-invasive bladder cancer NMIBC, Mitomycin or Bacillus Calmette Guerin (BCG) treatment are allowed.

    2. Another malignancy that is progressing or required active treatment , with the exception of those with a negligible risk of metastasis or death (such as adequately treated carcinoma in situ of the cervix, basal or squamous cell skin cancer, localized prostate cancer, or ductal carcinoma in situ).

    3. Active or prior autoimmune disease that might deteriorate when receiving an immunostimulatory agent. Note: Patients with diabetes type I, vitiligo, psoriasis, or hypothyroid or hyperthyroid disease not requiring immunosuppressive treatment are eligible.

    4. Patients that have a diagnosis of immunodeficiency or are receiving systemic steroid therapy or any other form of immunosuppressive therapy within 28 days prior to the first dose of trial treatment, with the exceptions of intranasal and inhaled corticosteroids or systemic corticosteroids at physiological doses (which are not to exceed 10 mg/day of prednisone, or an equivalent corticosteroid).

    5. History of allogeneic organ transplant. 6. Active non-infectious pneumonitis, pulmonary fibrosis, or known history of immune mediated pneumonitis.

    7. Active infection requiring systemic therapy. Patients with active, uncontrolled bacterial, fungal, or viral infection, including HBV, HCV, or known HIV infection.

    8. Live attenuated vaccines within 4 weeks prior to the first dose of sasanlimab and through 30 days following the last dose of sasanlimab are not allowed.

Note: influenza and SARS-CoV-2 vaccines which are inactivated are allowed. 9. Clinically significant cardiovascular diseases, including any of the following:

  1. History of acute myocardial infarction, acute coronary syndromes (including unstable angina, coronary artery bypass graft, coronary angioplasty or stenting) ≤6 months prior to start of study treatment.
  2. Congestive heart failure requiring treatment (New York Heart Association Class ≥2).
  3. Uncontrolled hypertension, defined as persistent systolic blood pressure ≥150 mmHg or diastolic blood pressure ≥100 mmHg despite optimal therapy.
  4. History or presence of clinically significant or uncontrolled sustained cardiac arrhythmias (including uncontrolled atrial fibrillation or uncontrolled paroxysmal supraventricular tachycardia).

  5. History of thromboembolic or cerebrovascular events ≤3 months prior to the first dose of study treatment, including ischemic attacks, cerebrovascular accidents, hemodynamically significant (ie, massive or sub-massive) deep vein thrombosis or pulmonary emboli. Note: Participants with either deep vein thrombosis or pulmonary emboli that do not result in hemodynamic instability are allowed to enroll as long as they are stable, asymptomatic and on stable anticoagulants for at least 2 weeks. Note: Participants with thromboembolic events related to indwelling catheters or other procedures may be enrolled. 10. Major surgery less than 28 days prior to the first dose of study treatment. 11. Clinically significant multiple or severe drug allergies, intolerance to topical corticosteroids, or severe post-treatment hypersensitivity reactions (including, but not limited to, erythema multiforme major, linear immunoglobulin A [IgA] dermatosis, toxic epidermal necrolysis, and exfoliative dermatitis.

    12. Known or suspected hypersensitivity to active ingredients or excipients of the study drug.

    13. Pregnant or breastfeeding. 14. Any serious or uncontrolled medical disorder, psychiatric or social condition that, in the opinion of the investigator, may increase the risk associated with study participation or study drug administration, impair the ability of the subject to receive protocol therapy, or interfere with the interpretation of study results.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Non-Randomized
  • Interventional Model: Single Group Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: Neoadjuvant
4 cycles of gemcitabine plus cisplatin
Drug: gemcitabine + cisplatine
4 cycles

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
To evaluate the bladder-intact overall survival at 12 months after the first dose of sasanlimab. Bladder-intact overall survival is defined as the time from initiation of sasanlimab treatment until death or cystectomy
Time Frame: 12 months
The primary endpoint will be the bladder-intact overall survival rate at 12 months after the first dose of sasanlimab. Bladder-intact overall survival is defined as the time from initiation of sasanlimab treatment until death or cystectomy. The primary endpoint will be the percentage of patients who are alive and with no cystectomy at 12 months after the first dose of sasanlimab.
12 months

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Fundación de investigación HM

Collaborators

Hospital Universitario 12 de Octubre
MFAR Clinical Research S.L.

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Estimated)

December 1, 2024

Primary Completion (Estimated)

December 1, 2026

Study Completion (Estimated)

December 1, 2027

Study Registration Dates

First Submitted

September 30, 2024

First Submitted That Met QC Criteria

September 30, 2024

First Posted (Actual)

October 2, 2024

Study Record Updates

Last Update Posted (Actual)

October 4, 2024

Last Update Submitted That Met QC Criteria

October 2, 2024

Last Verified

September 1, 2024

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • HM-87884561
  • EU CT (Other Identifier: 2024-512981-33-00)

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

product manufactured in and exported from the U.S.

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

Clinical Trials on Muscle Invasive Bladder Cancer

Clinical Trials on gemcitabine + cisplatine

Search Similar Trials

Sponsors and Collaborators

Medical Conditions

Drug Interventions

CROs by country

CROs in Guatemala

Conditions

Rare Diseases

Drug Interventions

Dietary Supplements

Sponsor/Collaborators

Locations

Subscribe