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Proliposomal Intravesical Paclitaxel for Treatment of Low-Grade, Stage Ta, Non Muscle Invasive Bladder Cancer

A Phase 1/2a Pilot Study of Intravesical TSD-001 for Treatment of Low-Grade, Stage Ta, Non Muscle Invasive Bladder Cancer

Status
Completed
Phases
Phase 1Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT03081858
Enrollment
15
Registered
2017-03-16
Start date
2018-05-17
Completion date
2021-08-05
Last updated
2025-06-27

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

Conditions

Bladder Cancer, Bladder Cancer Cell Transitional, Non-Muscle Invasive Bladder Cancer, Transitional Cell Carcinoma of the Bladder, Urinary Bladder, Urinary Bladder Diseases, Urinary Bladder Neoplasms, Urogenital Neoplasms, Urologic Diseases, Urologic Neoplasms

Keywords

NMIBC, Paclitaxel, Antineoplastic Agents, Bladder Cancer

Brief summary

This is a single-arm, phase 1/2a study of formulated paclitaxel in subjects with low-grade, noninvasive papillary carcinoma (stage Ta) of the bladder. Part 1 of the study will enroll 6 subjects (3 per cohort) with low-grade, stage Ta transitional cell carcinoma (TCC) of the bladder who will receive escalating doses of paclitaxel formulated as TSD-001 every 2 weeks for 6 treatments until Dose Limiting Toxicity (or until the Maximum Deliverable Dose) is observed (Maximum Tolerated Dose established). Part 2 of the study will enroll an additional 10 subjects with low-grade, stage Ta (uni-or multifocal) TCC of the bladder who will receive weekly TSD-001 for 6 weeks at the highest nontoxic dose (i.e., MTD) established in part 1 of the study. May meet definition of low grade without histological tissue diagnosis if on cystoscopic assessment they have a solitary papillary tumor. Part 3 of the study will continue to track subjects enrolled in Parts 1 and 2 to determine rates of disease-free survival.

Interventions

DRUGTSD-001

Administered via intravesical instillation.

Sponsors

TesoRx Pharma, LLC
CollaboratorINDUSTRY
Lipac Oncology LLC
Lead SponsorINDUSTRY

Study design

Allocation
NON_RANDOMIZED
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to 85 Years
Healthy volunteers
No

Inclusion criteria

* Has a diagnosis of low grade (G1 or G2), uni- or multifocal papillary appearing bladder tumor, stage Ta. * For part 1, subject will have ≥ 1 and ≤ 5 tumors (prior to TURBT), none of which exceeds 3.0 cm in diameter; for part 2, patient will have ≥ 2 and ≤ 5 tumors (prior to TURBT), none of which exceeds 3.0 cm in diameter (resection loop \ 1 cm), OR, for part 2, subject meets this inclusion if on cystoscopic assessment they have a solitary papillary tumor (\> 0.5 cm and ≤ 2.0 cm in diameter).. * Subject is surgical candidate for TURBT as part of normal NMIBC treatment plan. For part 1, successful completion of TURBT procedure. For part 2, successful completion of cystoscopic assessment/TURBT procedure with one marker lesion left intact; the marker lesion should be \> 0.5 cm and \< 2.0 cm in diameter. * Eastern Cooperative Oncology Group (ECOG) performance status of 0 or 1. * Peripheral neuropathy grade 1 or less. * Adequate hematological, hepatic, and renal parameters; i.e., hemoglobin \> 10 g/dL, creatinine \< 3.5 mg/dL, bilirubin \< 1.5 mg/dL , and aspartate aminotransferase, alanine aminotransferase \< 50 U/L, and alkaline phosphatase \< 130 U/L. * All sexually active subjects of reproductive potential are required to use or start using a reliable method of birth control at least 2 weeks prior to study enrollment, throughout the study, and for at least 3 months following completion of study therapy. * Females of childbearing potential must have a negative pregnancy test within 30 days prior to enrollment. Females who are postmenopausal for at least 1 year (defined as more than 12 months since last menses) or are surgically sterilized do not require this test. * For male subjects, the digital rectal examination must not be suspicious for carcinoma of the prostate. * Able to retain bladder instillations for up to 120 minutes (± 15 minutes).

Exclusion criteria

* Has an active concurrent malignancy/life-threatening disease. If there is a history of prior malignancies/life-threatening diseases, the subject is to be disease free for at least 5 years. Subjects with other prior malignancies less than 5 years before study entry may still be enrolled if they have received treatment resulting in complete resolution of the cancer and currently have no clinical, radiologic, or laboratory evidence of active or recurrent disease. Subjects will not be excluded for recurrent NMIBC, basal or squamous cell skin cancers, or noninvasive cancer of the cervix. * Has positive urine cytology for urothelial malignancy at screening. * Has an active uncontrolled infection, including a urinary tract infection, underlying medical condition, or other serious illness that would impair the ability of the subject to receive protocol treatment. * Previous intravesical therapy within 6 months of study entry. * Prior radiation to the pelvis. * Participated in a previous clinical trial or used any investigational drugs, biologics, or devices within 90 days prior to study treatment or plans to use any of these during the course of the study. * Has had any previous exposure to paclitaxel or docetaxel in the last 5 years. * Has or has ever had: upper tract TCC; urethral tumor (prostatic urethra included); any invasive bladder tumor known to be other than tumor Ta, low-grade (G1-G2); any evidence of lymph node or distant metastasis; any bladder tumor with histology other than TCC; or carcinoma in situ (CIS). * Has a tumor in a bladder diverticulum * Concurrent treatment with any chemotherapeutic agent. * History of vesicoureteral reflux. * An indwelling ureteral stent. * Has received any pelvic radiotherapy (including external beam and/or brachytherapy.) * Has a bleeding disorder or a screening platelet count \< 100×109/L. * Has an active diagnosis of interstitial cystitis. * For subjects with recurrent tumor, the subject had at least a 6-month cystoscopically confirmed tumor-free interval between the last tumor recurrence and screening cystoscopic examination. * Presence of poorly controlled diabetes mellitus (glycated hemoglobin \[HgbA1c\] \> 9.0%).

Design outcomes

Primary

MeasureTime frameDescription
Part 1: Maximum Tolerated Dose or Maximum Deliverable Dose (MDD)12 weeksDose immediately preceding the dose at which DLT occurs or when a MDD is reached.
Part 2: Marker Lesion Response Rate12 weeks (Cohort 1) or 15 weeks (Cohort 2)Determine the marker lesion response rate at final assessment visit for subjects that received the MDD established in part 1.

Secondary

MeasureTime frameDescription
Part 1: Determine Paclitaxel Concentrations10 weeksDetermine the local (bladder urine) and systemic (peripheral blood) paclitaxel concentrations before and after intravesical exposure to TSD-001 at all doses. Blood and urine samples were collected 15 (± 15) minutes before and 2 hours (± 10 minutes) after each instillation. Results are presented for different dose levels administered during dose escalation. The remaining results are grouped by cohort.
Part 2: Determine Paclitaxel ConcentrationsWeek 2 (pre and post dose)Determine the systemic (peripheral blood) paclitaxel concentrations 15 (± 15) minutes before, and 2 hours (± 10 minutes) after the third intravesical instillation (Week 2) of TSD-001.

Other

MeasureTime frameDescription
Part 3: Rates of Recurrence/Disease-Free Survival in Part 1 Subjects Only at 12 and 24 Months2 yearsLong-term follow-up to determine when histological tissue diagnosis evidence of recurrence occurs for subjects after complete TURBT and exposure to TSD-001 in part 1. Cystoscopic surveillance was performed every 3 months from the last endoscopic assessment in part 1 until 24 months (from initial TURBT and instillation). Part 2 subjects, different than part 1 subjects, were followed for marker lesion response and did not have standardized TURBT timing to use as a baseline and so are not included in these reported RFS rates. Recurrence-free survival is no histological evidence of transitional cell carcinoma (TCC) recurrence in the time outlined for the TCC risk level.

Countries

United States

Participant flow

Participants by arm

ArmCount
TSD-001 Administration Part 1, Cohort 1
Part 1, Cohort 1: For the first 3 subjects enrolled, the initial dose was 10 mg in Sterile Water for Injection (SWFI). TSD-001 was planned to be retained in the bladder for 2 hours (1 hour or more will be acceptable, depending on the subject's tolerability of the procedure). As Dose Limiting Toxicity(DLT) did not develop, intravesical instillation 14 days later was titrated up according to the schedule (25, 50, 75, 100, 150 mg in SWFI). TSD-001: Administered via intravesical instillation.
3
TSD-001 Administration Part 1, Cohort 2
Part 1, Cohort 2: For the next 3 subjects enrolled, the initial dose was 90 mg in SWFI. TSD-001 was planned to be retained in the bladder for 2 hours (1 hour or more will be acceptable, depending on the subject's tolerability of the procedure). As DLT did not develop, intravesical instillation 14 days later was titrated up according to the schedule (180, 270, 360, 450, and 540 mg in SWFI). As no DLT was observed in the first 6 subjects (cohorts 1 and 2) after titration up, the maximum deliverable dose (MDD) was defined as 360 mg and the dose was recommended for part 2 of the study. TSD-001: Administered via intravesical instillation.
3
TSD-001 Administration Part 2, Cohort 1
In part 2, cohort 1, the MDD of 360 mg, established in part 1, was provided weekly via the intravesical route. During part 2, cohort 1, 6 additional subjects received intravesical instillations of TSD-001 via urethral catheterization of the urinary bladder at the MDD established in part 1 at weekly intervals for 6 consecutive weeks. TSD-001 was planned to be retained in the bladder for 2 hours (1 hour or more will be acceptable, depending on the subject's tolerability of the procedure). TSD-001: Administered via intravesical instillation.
6
TSD Administration Part 2, Cohort 2
In part 2, cohort 1, the MDD of 360 mg, established in part 1, was provided weekly via the intravesical route. During part 2, cohort 2, 3 additional subjects received intravesical instillations of TSD-001 via urethral catheterization of the urinary bladder at the MDD established in part 1 at weekly intervals for 8 consecutive weeks. TSD-001 was planned to be retained in the bladder for 2 hours (1 hour or more will be acceptable, depending on the subject's tolerability of the procedure). TSD-001: Administered via intravesical instillation.
3
Total15

Withdrawals & dropouts

PeriodReasonFG000FG001FG002FG003
Overall StudySponsor Discontinuation - IP issue for investigation (Bacterial Endotoxin level)2000

Baseline characteristics

CharacteristicTSD-001 Administration Part 1, Cohort 1TSD-001 Administration Part 1, Cohort 2TSD-001 Administration Part 2, Cohort 1TSD Administration Part 2, Cohort 2Total
Age, Continuous75.33 years
STANDARD_DEVIATION 8.96
71.67 years
STANDARD_DEVIATION 5.51
57.50 years
STANDARD_DEVIATION 16.99
64.33 years
STANDARD_DEVIATION 17.79
65.27 years
STANDARD_DEVIATION 14.85
European Association of Urology (EAU) Risk Stratification
Intermediate Risk
1 Participants3 Participants6 Participants3 Participants13 Participants
European Association of Urology (EAU) Risk Stratification
Low Risk
2 Participants0 Participants0 Participants0 Participants2 Participants
Non-Muscle Invasive Bladder Cancer Recurrent
No
2 Participants1 Participants0 Participants0 Participants3 Participants
Non-Muscle Invasive Bladder Cancer Recurrent
Yes
1 Participants2 Participants6 Participants3 Participants12 Participants
Number of Tumor Locations
Multifocal
1 Participants2 Participants4 Participants3 Participants10 Participants
Number of Tumor Locations
Solitary
2 Participants1 Participants2 Participants0 Participants5 Participants
Previous Intravesical Therapy
No
2 Participants3 Participants3 Participants1 Participants9 Participants
Previous Intravesical Therapy
Yes
1 Participants0 Participants3 Participants2 Participants6 Participants
Race/Ethnicity, Customized
Race/Ethnicity
Asian/ Not Hispanic or Latino
0 Participants1 Participants0 Participants0 Participants1 Participants
Race/Ethnicity, Customized
Race/Ethnicity
White/ Hispanic or Latino
0 Participants0 Participants2 Participants0 Participants2 Participants
Race/Ethnicity, Customized
Race/Ethnicity
White/ Not Hispanic or Latino
3 Participants2 Participants4 Participants3 Participants12 Participants
Region of Enrollment
United States
3 participants3 participants6 participants3 participants15 participants
Sex: Female, Male
Female
0 Participants1 Participants4 Participants0 Participants5 Participants
Sex: Female, Male
Male
3 Participants2 Participants2 Participants3 Participants10 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
EG003
affected / at risk
EG004
affected / at risk
deaths
Total, all-cause mortality
0 / 30 / 30 / 60 / 30 / 10
other
Total, other adverse events
3 / 32 / 36 / 62 / 31 / 10
serious
Total, serious adverse events
0 / 30 / 30 / 61 / 31 / 10

Outcome results

Primary

Part 1: Maximum Tolerated Dose or Maximum Deliverable Dose (MDD)

Dose immediately preceding the dose at which DLT occurs or when a MDD is reached.

Time frame: 12 weeks

Population: MITT/PK Population

ArmMeasureValue (NUMBER)
TSD-001 Administration Part 1, Cohort 1Part 1: Maximum Tolerated Dose or Maximum Deliverable Dose (MDD)NA mg
TSD-001 Administration Part 1, Cohort 2Part 1: Maximum Tolerated Dose or Maximum Deliverable Dose (MDD)360 mg
Primary

Part 2: Marker Lesion Response Rate

Determine the marker lesion response rate at final assessment visit for subjects that received the MDD established in part 1.

Time frame: 12 weeks (Cohort 1) or 15 weeks (Cohort 2)

Population: Per Protocol (PP) Population: The PP population will include subjects in the MITT population who have no major protocol violations.~Note: Modified Intent-to-Treat (MITT) population includes all enrolled subjects who received at least one dose of study drug and have at least one post-baseline measurement of paclitaxel concentration.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
TSD-001 Administration Part 1, Cohort 1Part 2: Marker Lesion Response RatePartial Response3 Participants
TSD-001 Administration Part 1, Cohort 1Part 2: Marker Lesion Response RateComplete Response0 Participants
TSD-001 Administration Part 1, Cohort 1Part 2: Marker Lesion Response RateMarker Lesion Response3 Participants
TSD-001 Administration Part 1, Cohort 2Part 2: Marker Lesion Response RateComplete Response1 Participants
TSD-001 Administration Part 1, Cohort 2Part 2: Marker Lesion Response RatePartial Response1 Participants
TSD-001 Administration Part 1, Cohort 2Part 2: Marker Lesion Response RateMarker Lesion Response2 Participants
Secondary

Part 1: Determine Paclitaxel Concentrations

Determine the local (bladder urine) and systemic (peripheral blood) paclitaxel concentrations before and after intravesical exposure to TSD-001 at all doses. Blood and urine samples were collected 15 (± 15) minutes before and 2 hours (± 10 minutes) after each instillation. Results are presented for different dose levels administered during dose escalation. The remaining results are grouped by cohort.

Time frame: 10 weeks

Population: Per Protocol (PP) Population: The PP population will include subjects in the MITT population who have no major protocol violations.~Note: Modified Intent-to-Treat (MITT) population includes all enrolled subjects who received at least one dose of study drug and have at least one post-baseline measurement of paclitaxel concentration.

ArmMeasureGroupValue (MEAN)Dispersion
TSD-001 Administration Part 1, Cohort 1Part 1: Determine Paclitaxel ConcentrationsPredose Plasma - Paclitaxel Concentration in Plasma collected 15 minutes before0 ug/LStandard Deviation 0
TSD-001 Administration Part 1, Cohort 1Part 1: Determine Paclitaxel ConcentrationsPostdose Urine - Paclitaxel Concentration in Urine collected 2 hrs post19367 ug/LStandard Deviation 4341
TSD-001 Administration Part 1, Cohort 1Part 1: Determine Paclitaxel ConcentrationsPostdose Plasma - Paclitaxel Concentration in Plasma collected 2 hrs post0 ug/LStandard Deviation 0
TSD-001 Administration Part 1, Cohort 1Part 1: Determine Paclitaxel ConcentrationsPredose Urine - Paclitaxel Concentration in Urine collected 15 minutes before0 ug/LStandard Deviation 0
TSD-001 Administration Part 1, Cohort 2Part 1: Determine Paclitaxel ConcentrationsPostdose Urine - Paclitaxel Concentration in Urine collected 2 hrs post72933 ug/LStandard Deviation 50497
TSD-001 Administration Part 1, Cohort 2Part 1: Determine Paclitaxel ConcentrationsPredose Urine - Paclitaxel Concentration in Urine collected 15 minutes before0 ug/LStandard Deviation 0
TSD-001 Administration Part 1, Cohort 2Part 1: Determine Paclitaxel ConcentrationsPredose Plasma - Paclitaxel Concentration in Plasma collected 15 minutes before0 ug/LStandard Deviation 0
TSD-001 Administration Part 1, Cohort 2Part 1: Determine Paclitaxel ConcentrationsPostdose Plasma - Paclitaxel Concentration in Plasma collected 2 hrs post0 ug/LStandard Deviation 0
TSD-001 Administration Part 1, Cohort 1: Week 4: 50 mgPart 1: Determine Paclitaxel ConcentrationsPredose Urine - Paclitaxel Concentration in Urine collected 15 minutes before0 ug/LStandard Deviation 0
TSD-001 Administration Part 1, Cohort 1: Week 4: 50 mgPart 1: Determine Paclitaxel ConcentrationsPostdose Urine - Paclitaxel Concentration in Urine collected 2 hrs post189667 ug/LStandard Deviation 73433
TSD-001 Administration Part 1, Cohort 1: Week 4: 50 mgPart 1: Determine Paclitaxel ConcentrationsPredose Plasma - Paclitaxel Concentration in Plasma collected 15 minutes before0 ug/LStandard Deviation 0
TSD-001 Administration Part 1, Cohort 1: Week 4: 50 mgPart 1: Determine Paclitaxel ConcentrationsPostdose Plasma - Paclitaxel Concentration in Plasma collected 2 hrs post0 ug/LStandard Deviation 0
TSD-001 Administration Part 1, Cohort 1: Week 6: 75 mgPart 1: Determine Paclitaxel ConcentrationsPredose Urine - Paclitaxel Concentration in Urine collected 15 minutes before0 ug/LStandard Deviation 0
TSD-001 Administration Part 1, Cohort 1: Week 6: 75 mgPart 1: Determine Paclitaxel ConcentrationsPostdose Plasma - Paclitaxel Concentration in Plasma collected 2 hrs post0 ug/LStandard Deviation 0
TSD-001 Administration Part 1, Cohort 1: Week 6: 75 mgPart 1: Determine Paclitaxel ConcentrationsPostdose Urine - Paclitaxel Concentration in Urine collected 2 hrs post287333 ug/LStandard Deviation 134016
TSD-001 Administration Part 1, Cohort 1: Week 6: 75 mgPart 1: Determine Paclitaxel ConcentrationsPredose Plasma - Paclitaxel Concentration in Plasma collected 15 minutes before0 ug/LStandard Deviation 0
TSD-001 Administration Part 1, Cohort 1: Week 8: 100 mgPart 1: Determine Paclitaxel ConcentrationsPostdose Urine - Paclitaxel Concentration in Urine collected 2 hrs post436000 ug/L
TSD-001 Administration Part 1, Cohort 1: Week 8: 100 mgPart 1: Determine Paclitaxel ConcentrationsPostdose Plasma - Paclitaxel Concentration in Plasma collected 2 hrs post0 ug/L
TSD-001 Administration Part 1, Cohort 1: Week 8: 100 mgPart 1: Determine Paclitaxel ConcentrationsPredose Plasma - Paclitaxel Concentration in Plasma collected 15 minutes before0 ug/L
TSD-001 Administration Part 1, Cohort 1: Week 8: 100 mgPart 1: Determine Paclitaxel ConcentrationsPredose Urine - Paclitaxel Concentration in Urine collected 15 minutes before0 ug/LStandard Deviation 0
TSD-001 Administration Part 1, Cohort 1: Week 10: 150 mgPart 1: Determine Paclitaxel ConcentrationsPredose Urine - Paclitaxel Concentration in Urine collected 15 minutes before0 ug/L
TSD-001 Administration Part 1, Cohort 1: Week 10: 150 mgPart 1: Determine Paclitaxel ConcentrationsPostdose Urine - Paclitaxel Concentration in Urine collected 2 hrs post446000 ug/L
TSD-001 Administration Part 1, Cohort 1: Week 10: 150 mgPart 1: Determine Paclitaxel ConcentrationsPostdose Plasma - Paclitaxel Concentration in Plasma collected 2 hrs post0 ug/L
TSD-001 Administration Part 1, Cohort 1: Week 10: 150 mgPart 1: Determine Paclitaxel ConcentrationsPredose Plasma - Paclitaxel Concentration in Plasma collected 15 minutes before0 ug/L
TSD-001 Administration Part 1, Cohort 2: Day 1: 90 mgPart 1: Determine Paclitaxel ConcentrationsPredose Plasma - Paclitaxel Concentration in Plasma collected 15 minutes before0 ug/LStandard Deviation 0
TSD-001 Administration Part 1, Cohort 2: Day 1: 90 mgPart 1: Determine Paclitaxel ConcentrationsPredose Urine - Paclitaxel Concentration in Urine collected 15 minutes before0 ug/LStandard Deviation 0
TSD-001 Administration Part 1, Cohort 2: Day 1: 90 mgPart 1: Determine Paclitaxel ConcentrationsPostdose Urine - Paclitaxel Concentration in Urine collected 2 hrs post241000 ug/LStandard Deviation 35539
TSD-001 Administration Part 1, Cohort 2: Day 1: 90 mgPart 1: Determine Paclitaxel ConcentrationsPostdose Plasma - Paclitaxel Concentration in Plasma collected 2 hrs post0 ug/LStandard Deviation 0
TSD-001 Administration Part 1, Cohort 2: Week 2: 180 mgPart 1: Determine Paclitaxel ConcentrationsPostdose Urine - Paclitaxel Concentration in Urine collected 2 hrs post699000 ug/LStandard Deviation 272567
TSD-001 Administration Part 1, Cohort 2: Week 2: 180 mgPart 1: Determine Paclitaxel ConcentrationsPredose Urine - Paclitaxel Concentration in Urine collected 15 minutes before.8 ug/LStandard Deviation 1.4
TSD-001 Administration Part 1, Cohort 2: Week 2: 180 mgPart 1: Determine Paclitaxel ConcentrationsPostdose Plasma - Paclitaxel Concentration in Plasma collected 2 hrs post0 ug/LStandard Deviation 0
TSD-001 Administration Part 1, Cohort 2: Week 2: 180 mgPart 1: Determine Paclitaxel ConcentrationsPredose Plasma - Paclitaxel Concentration in Plasma collected 15 minutes before0 ug/LStandard Deviation 0
TSD-001 Administration Part 1, Cohort 2: Week 4: 270 mgPart 1: Determine Paclitaxel ConcentrationsPredose Plasma - Paclitaxel Concentration in Plasma collected 15 minutes before0 ug/LStandard Deviation 0
TSD-001 Administration Part 1, Cohort 2: Week 4: 270 mgPart 1: Determine Paclitaxel ConcentrationsPostdose Plasma - Paclitaxel Concentration in Plasma collected 2 hrs post0 ug/LStandard Deviation 0
TSD-001 Administration Part 1, Cohort 2: Week 4: 270 mgPart 1: Determine Paclitaxel ConcentrationsPostdose Urine - Paclitaxel Concentration in Urine collected 2 hrs post686667 ug/LStandard Deviation 167861
TSD-001 Administration Part 1, Cohort 2: Week 4: 270 mgPart 1: Determine Paclitaxel ConcentrationsPredose Urine - Paclitaxel Concentration in Urine collected 15 minutes before0 ug/LStandard Deviation 0
TSD-001 Administration Part 1, Cohort 2: Week 6: 360 mgPart 1: Determine Paclitaxel ConcentrationsPredose Urine - Paclitaxel Concentration in Urine collected 15 minutes before0 ug/LStandard Deviation 0
TSD-001 Administration Part 1, Cohort 2: Week 6: 360 mgPart 1: Determine Paclitaxel ConcentrationsPredose Plasma - Paclitaxel Concentration in Plasma collected 15 minutes before0 ug/LStandard Deviation 0
TSD-001 Administration Part 1, Cohort 2: Week 6: 360 mgPart 1: Determine Paclitaxel ConcentrationsPostdose Urine - Paclitaxel Concentration in Urine collected 2 hrs post1161667 ug/LStandard Deviation 760795
TSD-001 Administration Part 1, Cohort 2: Week 6: 360 mgPart 1: Determine Paclitaxel ConcentrationsPostdose Plasma - Paclitaxel Concentration in Plasma collected 2 hrs post0 ug/LStandard Deviation 0
TSD-001 Administration Part 1, Cohort 2: Week 8: 450 mgPart 1: Determine Paclitaxel ConcentrationsPostdose Urine - Paclitaxel Concentration in Urine collected 2 hrs post1800000 ug/LStandard Deviation 606300
TSD-001 Administration Part 1, Cohort 2: Week 8: 450 mgPart 1: Determine Paclitaxel ConcentrationsPredose Plasma - Paclitaxel Concentration in Plasma collected 15 minutes before0 ug/LStandard Deviation 0
TSD-001 Administration Part 1, Cohort 2: Week 8: 450 mgPart 1: Determine Paclitaxel ConcentrationsPredose Urine - Paclitaxel Concentration in Urine collected 15 minutes before0 ug/LStandard Deviation 0
TSD-001 Administration Part 1, Cohort 2: Week 8: 450 mgPart 1: Determine Paclitaxel ConcentrationsPostdose Plasma - Paclitaxel Concentration in Plasma collected 2 hrs post0 ug/LStandard Deviation 0
TSD-001 Administration Part 1, Cohort 2: Week 10: 540 mgPart 1: Determine Paclitaxel ConcentrationsPredose Urine - Paclitaxel Concentration in Urine collected 15 minutes before0 ug/LStandard Deviation 0
TSD-001 Administration Part 1, Cohort 2: Week 10: 540 mgPart 1: Determine Paclitaxel ConcentrationsPredose Plasma - Paclitaxel Concentration in Plasma collected 15 minutes before0 ug/LStandard Deviation 0
TSD-001 Administration Part 1, Cohort 2: Week 10: 540 mgPart 1: Determine Paclitaxel ConcentrationsPostdose Urine - Paclitaxel Concentration in Urine collected 2 hrs post1886333 ug/LStandard Deviation 1317354
TSD-001 Administration Part 1, Cohort 2: Week 10: 540 mgPart 1: Determine Paclitaxel ConcentrationsPostdose Plasma - Paclitaxel Concentration in Plasma collected 2 hrs post0 ug/LStandard Deviation 0
Secondary

Part 2: Determine Paclitaxel Concentrations

Determine the systemic (peripheral blood) paclitaxel concentrations 15 (± 15) minutes before, and 2 hours (± 10 minutes) after the third intravesical instillation (Week 2) of TSD-001.

Time frame: Week 2 (pre and post dose)

Population: Per Protocol (PP): This population will include subjects in the MITT population who have no major protocol violations.~Note: The Modified Intent to Treat (MITT) population includes enrolled subjects who received at least one dose of study drug and have at least one post-baseline measurement of paclitaxel concentration.

ArmMeasureGroupValue (MEAN)Dispersion
TSD-001 Administration Part 1, Cohort 1Part 2: Determine Paclitaxel ConcentrationsPredose0 ug/LStandard Deviation 0
TSD-001 Administration Part 1, Cohort 1Part 2: Determine Paclitaxel ConcentrationsPostdose0 ug/LStandard Deviation 0
TSD-001 Administration Part 1, Cohort 2Part 2: Determine Paclitaxel ConcentrationsPredose0 ug/LStandard Deviation 0
TSD-001 Administration Part 1, Cohort 2Part 2: Determine Paclitaxel ConcentrationsPostdose0 ug/LStandard Deviation 0
Other Pre-specified

Part 3: Rates of Recurrence/Disease-Free Survival in Part 1 Subjects Only at 12 and 24 Months

Long-term follow-up to determine when histological tissue diagnosis evidence of recurrence occurs for subjects after complete TURBT and exposure to TSD-001 in part 1. Cystoscopic surveillance was performed every 3 months from the last endoscopic assessment in part 1 until 24 months (from initial TURBT and instillation). Part 2 subjects, different than part 1 subjects, were followed for marker lesion response and did not have standardized TURBT timing to use as a baseline and so are not included in these reported RFS rates. Recurrence-free survival is no histological evidence of transitional cell carcinoma (TCC) recurrence in the time outlined for the TCC risk level.

Time frame: 2 years

Population: The MITT population will include all enrolled subjects who received at least one dose of study drug and had at least one post-baseline measurement of paclitaxel concentration.

ArmMeasureGroupCategoryValue (COUNT_OF_PARTICIPANTS)
TSD-001 Administration Part 1, Cohort 1Part 3: Rates of Recurrence/Disease-Free Survival in Part 1 Subjects Only at 12 and 24 MonthsOne YearDisease-Free3 Participants
TSD-001 Administration Part 1, Cohort 1Part 3: Rates of Recurrence/Disease-Free Survival in Part 1 Subjects Only at 12 and 24 MonthsOne YearRecurrence Occurred0 Participants
TSD-001 Administration Part 1, Cohort 1Part 3: Rates of Recurrence/Disease-Free Survival in Part 1 Subjects Only at 12 and 24 MonthsTwo YearDisease-Free3 Participants
TSD-001 Administration Part 1, Cohort 1Part 3: Rates of Recurrence/Disease-Free Survival in Part 1 Subjects Only at 12 and 24 MonthsTwo YearRecurrence Occurred0 Participants
TSD-001 Administration Part 1, Cohort 2Part 3: Rates of Recurrence/Disease-Free Survival in Part 1 Subjects Only at 12 and 24 MonthsTwo YearRecurrence Occurred1 Participants
TSD-001 Administration Part 1, Cohort 2Part 3: Rates of Recurrence/Disease-Free Survival in Part 1 Subjects Only at 12 and 24 MonthsOne YearDisease-Free2 Participants
TSD-001 Administration Part 1, Cohort 2Part 3: Rates of Recurrence/Disease-Free Survival in Part 1 Subjects Only at 12 and 24 MonthsTwo YearDisease-Free2 Participants
TSD-001 Administration Part 1, Cohort 2Part 3: Rates of Recurrence/Disease-Free Survival in Part 1 Subjects Only at 12 and 24 MonthsOne YearRecurrence Occurred1 Participants

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026