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About TTR

Transthyretin (TTR) is a carrier protein in serum and cerebrospinal fluid, transporting thyroid hormones and retinol. Its propensity to misfold and aggregate into amyloid fibrils makes it a therapeutic target.

2
Approved Drugs
2
Companies
1
Indications
1
Therapeutic Areas
Broadest Approval
ATTRUBY
BRIDGEBIO PHARMA
1
approved indications

Top TTR Drugs

ATTRUBY
BRIDGEBIO PHARMA
1 indications · 2024
VYNDAMAX
FOLDRX PHARMS
1 indications · 2019
🏢

FOLDRX PHARMS is the only company with an approved drug targeting TTR.

TTR Drug Modality Landscape

Modalities

Small molecule
2
100%

Routes of Administration

💊 Oral
2
100%
💡

TTR is amenable to small molecule drugs, with oral options available for convenient dosing.

Explore alternative modalities like antibodies or gene therapies to differentiate from existing treatments.

Oral option available Small molecules only

TTR Clinical Trials 36 trials

Phase 1-4 trials started in 2008 or later that test an FDA-approved drug acting on TTR. Source: ClinicalTrials.gov. How we count

36
Total Trials
5
Active
28
Completed
90%
Completion Rate

Completion by Phase

Phase Total Completed Stopped Active Completion
Phase 1 21 20 1 0 95%
Phase 2 1 0 1 0 0%
Phase 3 8 6 1 1 86%
Phase 4 6 2 0 4 100%

Top Sponsors

Pfizer 26 96%
Eidos Therapeutics, a Bridge... 5 50%
Alexion Pharmaceuticals, Inc. 2 100%
Bayer 1
University of Texas Southwes... 1
Qilu Pharmaceutical Co., Ltd. 1

By Modality

Small molecule
36 90%
Source: ClinicalTrials.gov · Completion rate = completed ÷ (completed + terminated + withdrawn)

Pro Intelligence Preview

Deep insights for drug target analysis

Competitive Landscape

  • • 2 companies competing
  • • Market share by company

Full Drug Portfolio

  • • All 2 approved drugs
  • • Approval dates & indications

Genetic Validation

  • • Full genetic evidence table
  • • Effect sizes & directions

Approval Timeline

  • • Full 2-drug timeline
  • • First-of-modality markers

Clinical Trials Analysis

  • • Sponsors: 6 (5 companies)
  • • Completion rates by condition
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Full summary • All drugs • Genetic evidence • Trials • Timeline

How We Count Trials

  • Trials: phase 1-4 interventional trials on ClinicalTrials.gov that started in 2008 or later and test an FDA-approved drug acting on TTR. A trial counts if an approved drug acting on TTR is in any arm, including as a comparator, and a trial that tests two such drugs counts once. Trials that test only unapproved drugs are not counted. A trial listed as phase 1/2 counts as phase 1, and phase 2/3 as phase 2.
  • Active: recruiting, not yet recruiting, enrolling by invitation, or active and no longer recruiting.
  • Completion rate: of the trials that have ended, the share marked Completed rather than Terminated or Withdrawn. Completed means the trial ended as planned; it does not mean the drug worked. Suspended trials are not counted as ended.
  • Stopped: terminated or withdrawn. Trials stop for many reasons, including slow enrolment and business decisions, not only safety or efficacy.
  • Sponsors: the lead sponsor of each trial. Companies are the sponsors ClinicalTrials.gov classes as industry; the rest are universities, hospitals, cooperative groups, government bodies and individuals.