BIOLOGICAL
ALT-801
Intravenous infusion: 2 treatment courses and 1 maintenance course; on Day 3, 5, 8 and 15 of each course.
Status
Terminated
Phase
Phase 1 / Phase 2
Enrollment
12
Locations
5
Results
Posted
Publications
0
Study summary
This is a Phase Ib/II, open-label, multi-center and competitive enrollment study of ALT-801 combined with gemcitabine for patients who have BCG failure (defined as refractory, relapsing or intolerant), non-muscle invasive bladder cancer and refuse or are not medically fit to undergo a radical cystectomy recommended by the participating urologist as the standard next therapy per urologic guidelines. The purpose of this study is to confirm the safety and tolerability of a well-tolerated dose level of ALT-801, to determine the Recommended Dose level (RD) and characterize the immunogenicity of ALT-801 combined with gemcitabine in treated patients. The anti-tumor responses will also be assessed.
Bladder cancer is the fifth most common cancer in the United States with an estimated 71,000 new cases and approximately 14,000 deaths in 2009. Bladder cancer is also the costliest to treat per patient of all cancers, with annual direct medical expenditures in excess of $3.7 billion in the United States. This is largely because approximately 70% of all new cases of bladder cancer present as non-muscle invasive bladder cancer (NMIBC), which tends to recur, requiring repeated interventions and long-term follow-up. Altor Bioscience Corp. has developed a tumor-targeted IL-2 fusion protein, ALT-801, comprising human recombinant IL-2 genetically linked to a TCR domain capable of binding a tumor associated human p53 peptide presented in the context of HLA-A2. ALT-801 will be evaluated as to whether it can prevent disease progression and allow for bladder preservation to maintain the quality of life for patients with BCG failure, defined as refractory, relapsing or intolerant, non-muscle invasive bladder cancer who refuse or are not medically fit to undergo a radical cystectomy recommended by the participating urologist as the standard next therapy per urologic guidelines.
Interventions
BIOLOGICAL
Intravenous infusion: 2 treatment courses and 1 maintenance course; on Day 3, 5, 8 and 15 of each course.
DRUG
Intravenous infusion: 2 treatment courses and 1 maintenance course; on Day 1 and 8 of each course.
Timeline
First posted
Jun 21, 2012
Study start
Mar 30, 2012
Primary completion
Mar 8, 2018
Study completion
Mar 8, 2018
Results posted
Jul 19, 2024
Registry updated
Jul 19, 2024
Outcomes
Safety Profile
Time frame · 12 weeks
Confirmation of the safety and tolerability (dose limiting toxicity count) of ALT-801 combined with gemcitabine.
Disease Response Rate
Time frame · From start of study treatment to up to 13 weeks
The response rate was calculated as the ratio of the number of patients who demonstrated a complete response (by RECIST v1.1) divided by the number of patients evaluable for response. A complete response was defined as having negative bladder biopsy results.
Duration of Response
Time frame · From confirmed complete response to up to 3 years
Duration of response was defined as the time from the date of first complete response (by RECIST v1.1) to the date of disease progression (by RECIST v1.1) or death (from any cause), whichever occured first. A complete response was defined as having negative bladder biopsy results. Disease progression by RECIST v1.1 is defined as at least a 20% increase in the sum of diameters of target lesions in reference to the smallest sum on study and an absolute increase of at least 5 mm; the appearance of any new lesions is also considered progression.
Progression-free Survival
Time frame · From start of study treatment to up to 3 years
The progression-free survival was defined as the time from the start of study treatment to first documentation of objective tumor progression or disease recurrence (by RECIST v1.1). Disease progression by RECIST v1.1 is defined as at least a 20% increase in the sum of diameters of target lesions in reference to the smallest sum on study and an absolute increase of at least 5 mm; the appearance of any new lesions is also considered progression.
Event-free Survival
Time frame · From start of study treatment to up to 3 years
The event-free survival was defined as the time from the start of study treatment to first documentation of objective tumor progression (by RECIST v1.1), disease recurrence, bladder resection or irradiation, other anti-bladder cancer therapy, or to death due to any cause, which ever came first. Disease progression by RECIST v1.1 is defined as at least a 20% increase in the sum of diameters of target lesions in reference to the smallest sum on study and an absolute increase of at least 5 mm; the appearance of any new lesions is also considered progression.
Overall Survival
Time frame · From start of study treatment to up to 3 years
OS was defined as the time from start of study treatment to death resulting from any cause.
Eligibility
ENTRY CRITERIA: DISEASE CHARATERISTICS: * Histologically confirmed high-risk (high grade Ta, T1 or carcinoma in situ, tumor \>4 cm or multi-focal) transitional cell carcinoma s/p TURBT with no remaining resectable disease within 4 weeks of study entry * Intolerant of treatment with BCG or failure (refractory or relapsing) of at least one prior treatment with BCG * Refuse or intolerant of a radical cystectomy * No Evidence of regional and/or distant metastasis PRIOR/CONCURRENT THERAPY: * No concurrent radiotherapy, other chemotherapy, or other immunotherapy * No scheduled radiotherapy, chemotherapy, other immunotherapy, or surgery before the scheduled response evaluation * Must have recovered from side effects of prior treatments * No concurrent use of other investigational agents PATIENT CHARACTERISTICS: Age • ≥ 18 years Performance Status • ECOG 0, 1, or 2 Bone Marrow Reserve * Absolute neutrophil count (AGC/ANC) ≥ 1,000/uL * Platelets ≥ 100,000/uL * Hemoglobin ≥ 8 g/dL Renal Function • Glomerular Filtration Rate (GFR) ≥ 50mL/min Hepatic Function * Total bilirubin ≤ 2.0 X ULN * AST, ALT, ALP ≤ 3.0 X ULN Cardiovascular * No congestive heart failure \< 6 months * No severe/unstable angina pectoris \< 6 months * No myocardial infarction \< 6 months * No history of ventricular arrhythmias * No NYHA Class \> II CHF * No uncontrollable supraventricular arrhythmias * No history of a ventricular arrhythmia * No other clinical signs of severe cardiac dysfunction * Normal Transthoracic Echocardiogram (TTE) is required for patients who have history of EKG abnormalities, CHF, coronary artery disease or other cardiac disease, or have history of having received adriamycin or doxorubicin * No patients with a left ventricular ejection fraction (LVEF) of less than 50% Pulmonary • Normal clinical assessment of pulmonary function Other * Negative serum pregnancy test if female and of childbearing potential * Women who are not pregnant or nursing * Subjects, both females and males, with reproductive potential must agree to use effective contraceptive measures for the duration of the study * No known autoimmune disease other than corrected hypothyroidism * No known prior organ allograft or allogeneic transplantation * Not HIV positive * No active systemic infection requiring parenteral antibiotic therapy * No ongoing systemic steroid therapy required * No history or evidence of uncontrollable CNS disease * No psychiatric illness/social situation * No other illness that in the opinion of the investigator would exclude the subject from participating in the study * Must provide informed consent and HIPAA authorization and agree to comply with all protocol-specified procedures and follow-up evaluations
Study locations
United States. Showing up to 24 locations stored in the fast local snapshot.
University of Alabama Comprehensive Cancer Center
Birmingham, Alabama, United States
University of California Davis
Sacramento, California, United States
UF Health Center at Orlando Health
Orlando, Florida, United States
University of Oklahoma Health Science Center
Oklahoma City, Oklahoma, United States
UPMC Cancer Center
Pittsburgh, Pennsylvania, United States
Publications
No PMID-linked publications were present in this registry snapshot.
Related trials
Altimmune, Inc. · Alcohol Use Disorder (AUD)
Phase 2
Completed
100
2026-07
Altimmune, Inc. · Non-Alcoholic Steatohepatitis (NASH)
Phase 2
Completed
212
2026-05
Altimmune, Inc. · Alcohol Liver Disease
Phase 2
Recruiting
100
2026-03
Altimmune, Inc. · Obesity · Nonalcoholic Steatohepatitis
Phase 1
Completed
100
2025-06
Altimmune, Inc. · NASH - Nonalcoholic Steatohepatitis
Phase 1
Completed
40
2025-06
Altimmune, Inc. · Type 2 Diabetes
Phase 1
Completed
55
2025-06
Altor BioScience · Transitional Cell Carcinoma of Bladder · Urethra Cancer
Phase 1 / Phase 2
Completed
68
2024-06
Altor BioScience · Relapsed or Refractory Multiple Myeloma
Phase 1 / Phase 2
Terminated
6
2024-06
Related PeptideStat pages
Research pages describe evidence. Vendor pages, where available, describe independently tracked research-product listings and are not clinical recommendations.