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TD-1473 Long-Term Safety (LTS) Ulcerative Colitis (UC) Study

A 3-Year, Multi-Center, Long-Term Safety (LTS) Study to Evaluate the Safety and Tolerability of TD-1473 in Subjects With Ulcerative Colitis (UC)

Status
Terminated
Phases
Phase 2Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT03920254
Enrollment
46
Registered
2019-04-18
Start date
2020-07-23
Completion date
2021-10-27
Last updated
2022-11-02

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

Conditions

Ulcerative Colitis (UC)

Keywords

TD-1473, Janus kinase inhibitor, JAK inhibitor, Inflammatory Bowel Disease, IBD, Ulcerative colitis, UC, Intestinal restriction, Gut-selective

Brief summary

A 3-Year Multi-Center, Long-Term Safety (LTS) Study to Evaluate the Safety and Tolerability of TD-1473 in Subjects with Ulcerative Colitis who have participated in the Maintenance Study of Protocol 0157

Detailed description

This is a multi-center, long-term safety study to evaluate the safety and tolerability of TD-1473 for up to 156 weeks (3 years) + 4 week follow-up in subjects with moderate to severe UC exiting the preceding Maintenance Study of Protocol 0157 (NCT03758443).

Interventions

See Arm description

See Arm description

See Arm description

Sponsors

Theravance Biopharma
Lead SponsorINDUSTRY

Study design

Allocation
NON_RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
QUADRUPLE (Subject, Caregiver, Investigator, Outcomes Assessor)

Intervention model description

Long Term Safety (LTS)

Eligibility

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

Inclusion criteria

To be eligible for the study, subjects are required to enter the LTS Study within 14 days of exiting the Maintenance Study of Protocol 0157 and must meet all the following criteria: * Capable of providing informed consent, which must be obtained prior to any study related procedures. * One of the following: * Those who demonstrated persistent loss of response (no improvement 8 weeks after meeting loss of response criteria) OR * Two Clinical Flares after an episode of loss of response during the Maintenance Study OR * Those who have completed the Maintenance Study and confirmation of clinical remission status results are available * During the study and for 7 days after receiving the last dose of the study drug, females of childbearing potential or men capable of fathering children must agree to use highly effective birth control measures (failure rate \<1% when used consistently and correctly)) or agree to abstain from sexual intercourse. Females of childbearing potential must test negative for pregnancy at Day 1 * All male subjects must agree to refrain from semen donation during the study and for 7 days after the last dose of study drug. * Must be able and willing to adhere to the study visit schedule and comply with other study requirements.

Exclusion criteria

* Has symptoms suggestive of fulminant colitis, megacolon or intestinal perforation * Likely to require surgery for UC or other major surgeries * Has previously received / is currently receiving prohibited medications * Has been diagnosed during Protocol 0157 with Crohn's disease, other colitis conditions or the subject has a current or past diagnosis of a fistula or abdominal abscess * Has endoscopic findings during Protocol 0157 of colitis-associated colonic dysplasia (with the exception of subjects with non-colitis associated spontaneous adenomas that have been completely resected) * Has clinically significant abnormalities in laboratory evaluations * Additional

Design outcomes

Primary

MeasureTime frameDescription
Number of Participants Who Experienced a Treatment-emergent Adverse Event (TEAE)Day 1 up to 4 weeks after last dose of study drug (median treatment duration was: TD-1473 20 mg - 142 days; TD-1473 80 mg - 180.0 days; TD-1473 200 mg - 158 days)A TEAE was defined as any AE with a recorded start date on or after the date of the first dose of study drug up through 4 weeks after the last dose of study drug. Any clinically significant changes in laboratory safety tests, electrocardiograms (ECGs) and vital signs, were also recorded as TEAEs.

Countries

Australia, Bulgaria, Canada, France, Georgia, Germany, Greece, Hungary, Israel, Italy, Japan, Poland, Portugal, Romania, Serbia, Slovakia, South Africa, South Korea, Spain, Taiwan, Ukraine, United States

Participant flow

Recruitment details

46 out of the planned 500 participants were enrolled and received study drug between 23 July 2020 and 27 October 2021.

Participants by arm

ArmCount
TD-1473 20mg
Participants received TD-1473 orally at a dose of 20mg once daily.
13
TD-1473 80mg
Participants received TD-1473 orally at a dose of 80mg once daily.
18
TD-1473 200mg
Participants received TD-1473 orally at a dose of 200mg once daily.
15
Total46

Withdrawals & dropouts

PeriodReasonFG000FG001FG002
Overall StudyAdverse Event100
Overall StudyPhysician Decision012
Overall StudyStudy Terminated By Sponsor121712
Overall StudyWithdrawal by Subject001

Baseline characteristics

CharacteristicTD-1473 20mgTD-1473 80mgTD-1473 200mgTotal
Age, Continuous46.31 years
STANDARD_DEVIATION 17.375
43.22 years
STANDARD_DEVIATION 15.869
46.13 years
STANDARD_DEVIATION 13.432
45.04 years
STANDARD_DEVIATION 15.296
Ethnicity (NIH/OMB)
Hispanic or Latino
1 Participants1 Participants0 Participants2 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
12 Participants17 Participants15 Participants44 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Asian
1 Participants3 Participants1 Participants5 Participants
Race (NIH/OMB)
Black or African American
0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
More than one race
0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants0 Participants1 Participants1 Participants
Race (NIH/OMB)
White
12 Participants15 Participants13 Participants40 Participants
Sex: Female, Male
Female
8 Participants7 Participants7 Participants22 Participants
Sex: Female, Male
Male
5 Participants11 Participants8 Participants24 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
deaths
Total, all-cause mortality
0 / 130 / 180 / 15
other
Total, other adverse events
4 / 135 / 185 / 15
serious
Total, serious adverse events
0 / 130 / 181 / 15

Outcome results

Primary

Number of Participants Who Experienced a Treatment-emergent Adverse Event (TEAE)

A TEAE was defined as any AE with a recorded start date on or after the date of the first dose of study drug up through 4 weeks after the last dose of study drug. Any clinically significant changes in laboratory safety tests, electrocardiograms (ECGs) and vital signs, were also recorded as TEAEs.

Time frame: Day 1 up to 4 weeks after last dose of study drug (median treatment duration was: TD-1473 20 mg - 142 days; TD-1473 80 mg - 180.0 days; TD-1473 200 mg - 158 days)

Population: Includes all participants from the Safety Analysis Set.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
TD-1473 20mgNumber of Participants Who Experienced a Treatment-emergent Adverse Event (TEAE)4 Participants
TD-1473 80mgNumber of Participants Who Experienced a Treatment-emergent Adverse Event (TEAE)5 Participants
TD-1473 200mgNumber of Participants Who Experienced a Treatment-emergent Adverse Event (TEAE)6 Participants

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