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RecruitingNCT05871970STARBORN-1Updated Aug 24, 2026

Safety and Efficacy Study of Intracystic TARA-002 for the Treatment of Lymphatic Malformations in Participants 6 Months to Less Than 18 Years of Age

A Phase 2 interventional study of TARA-002 in Lymphatic Malformation, sponsored by Protara Therapeutics. Recruiting at 11 sites in United States. Open to participants aged 6 Months to 18 Years. Per ClinicalTrials.gov, last updated 2026-08-24.

Sponsored by Protara Therapeutics · Phase 2, Interventional, and Treatment

From the registry’s dates

  • Started Oct 2023; still recruiting 3 years later.
Phase
Phase 2
Study type
Interventional
Enrollment
38
Allocation
Not applicable
Ages
6 Months to 18 Years
Sex
All
01

Study summary

This is a Phase 2a/b single arm open label study to evaluate the safety, reactogenicity, and efficacy of intracystic injection of TARA-002 in participants 6 months to less than 18 years of age for the treatment of macrocystic and mixed cystic lymphatic malformations. The Phase 2a safety lead-in, age de-escalation study is designed to establish the safety of TARA-002 in older participants 6 years to less than 18 years before proceeding to younger participants 2 years to less than 6 years, then 6 months to less than 2 years. The Phase 2b is an expansion study in which enrollment of participants will be initiated after safety has been established in each cohort during the Phase 2a safety lead-in study. Each participant will receive up to 4 injections of TARA-002 spaced approximately 6 weeks apart.

02

Conditions studied

  • Lymphatic Malformation

Keywords

  • Macrocystic lymphatic malformations
  • Mixed-cystic lymphatic malformations
03

In context

Lymphatic Abnormalities

42 studies on the registry are indexed under Lymphatic Abnormalities; 17 are open to participants now.

This study's planned enrollment of 38 is below the median of 46 across 28 interventional studies indexed under Lymphatic Abnormalities.

Browse Lymphatic Abnormalities studies →

Lead sponsor

Protara Therapeutics is the lead sponsor of 7 studies on the registry; 4 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
6 Months to 18 Years
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Male or female participants 6 months to less than 18 years of age at the time of /assent form was signed
  • Participants whose parent/LAR(s) have voluntarily given written consent and participants who provided assent (if applicable) after the study has been explained to them
  • Participants with macrocystic LM or mixed cystic LM (≥ 50% macrocystic disease measured by volume) of the Head/Neck/Mediastinum according to the ISSVA 2018 criteria (ISSVA 2018) measured via LM imaging at Screening to confirm, upon central review, the diagnosis of macrocystic or mixed cystic LM
  • Participants who may have had surgical or sclerotherapy treatment for their LM, but not within six months of the consent/assent form being signed

Exclusion criteria

Exclusion Criteria:

  • Penicillin allergy
  • Vascular tumors or combined vascular malformations
  • Microcystic LM or mixed cystic LM with predominant microcystic features
  • LMs of the orbit (orbital LM) as target cyst

For more information on eligibility criteria, please contact the sponsor.

Terms in these criteria, in plain language(1)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

05

Study design

Phase
Phase 2
Primary purpose
Treatment
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
38 participants (estimated)

Study arms

  • Experimental
    TARA-002

    TARA-002 is a lyophilized biological preparation for injection containing cells of Streptococcus pyogenes (Group A, type 3) Su strain treated with benzylpenicillin.

    Biological: TARA-002

Interventions

06

What researchers measure

Primary outcomes

  1. Proportion of participants with clinical success after one treatment cycle of TARA-002

    Time frame: 8 weeks after the last injection

Secondary outcomes

  1. Safety: Percentage of participants with solicited local site and systemic reactions

    Time frame: 14 days (2 weeks) after each injection

  2. Safety: Percentage of participants with unsolicited adverse events (AEs)

    Time frame: Through study completion (approximately 32 weeks after last injection)

  3. Safety: Percentage of participants with SAEs, AEs of special interest, AEs leading to premature discontinuation of study intervention, AEs leading to withdrawal from study, AEs with an outcome of death, and MAAEs

    Time frame: Through study completion (approximately 32 weeks after last injection)

  4. Durable Response: Proportion of participants with clinical success after one treatment cycle of TARA-002 assessed at 8 weeks after the last injection and maintained clinical success at 32 weeks after the last injection

    Time frame: 32 weeks after the last injection

  5. Clinical Success by LM Type: Proportion of participants with macrocystic LM or mixed cystic LM with clinical success after one treatment cycle of TARA-002

    Time frame: 8 weeks after the last injection

  6. Investigator Assessment: Proportion of participants who demonstrate clinical improvement, as assessed by the Investigator, after one treatment cycle of TARA-002 compared to baseline

    Time frame: 8 weeks after last injection and 32 weeks after last injection

  7. Quality of Life: Change in Quality-of-Life assessment based on Pediatric Quality of Life Inventory (PedsQL) and Visual Analog Scale (VAS) for Pain after one treatment cycle of TARA-002

    Time frame: 8 weeks after last injection and 32 weeks after last injection

07

Study locations

9 of 11 sites recruiting
08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Aug 24, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT05871970
Lead sponsor
Protara Therapeutics
Responsible party
Sponsor
First posted
May 23, 2023
Start date
Oct 18, 2023
Primary completion
Dec 2026 (estimated)
Completion
May 2027 (estimated)
Last update
Aug 24, 2026

Study contacts

Chief R&D Officer
Contact
clinicaltrials@protaratx.com
16468440337
Chief R&D Officer
study director · Protara Therapeutics

Oversight

Data monitoring committee
Yes
FDA-regulated drug
Yes
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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Studies of the drugs tested here: Picibanil · Lyophilized Inactivated Group A Streptococcus TARA-002

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