Phase 2 PTSD Trial, Recruiting NCT07499440 Sponsor: HB BioTech, LLC Condition: PTSD
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Phase 2 PTSD Trial, Recruiting

NCT07499440
Recruiting Phase 2 🇦🇺 Australian site

Who may be able to join

AI generated eligibility summary. Written by an AI model from the official source data and checked on a sample basis. It can contain mistakes, so confirm anything important against the original source. How we use AI

Who might be able to join this trial:

  • People aged 18 to 65 years old at the time of giving consent to participate
  • People who have been diagnosed with PTSD according to standard diagnostic guidelines (DSM-5)
  • People whose PTSD symptoms reach a minimum required severity level, based on a standard clinical assessment tool called the CAPS-5 (a score of at least 26)
  • People whose current medications and/or therapy have been stable for at least 2 months, as determined by the trial doctor
  • People who are willing to stay on their current doses of other psychiatric medications for the whole trial
  • People who are willing and able to stop any medications that cannot safely be taken alongside the trial drug (HB-1), as determined by the trial doctor
  • People who are fluent in English
  • People who are willing to take the trial drug, HB-1
  • People who are willing and able to give informed consent, attend scheduled visits, and follow all study procedures
  • Women who cannot become pregnant (due to surgery or being at least 2 years past menopause), or who agree to use an accepted form of contraception (such as an intrauterine device, barrier method with spermicide, condoms, hormonal contraception, or abstinence) for the full duration of the study (confirm with trial site regarding abstinence requirements)
  • Men who are sterile or who agree to use condoms with spermicide for the duration of the study and for 4 months after the last dose of the trial drug
  • People in same-sex relationships are exempt from birth control requirements, but must agree to follow the requirements if they do enter a heterosexual relationship during the trial
  • Women of childbearing potential who have a negative pregnancy test at screening, taken within 7 days before the first dose of the trial drug

Who may not be able to join:

  • People with any ongoing illness, condition, or treatment that the trial doctor or sponsor believes could interfere with the study or pose an unacceptable risk
  • People currently being treated with benzodiazepines (such as alprazolam, diazepam, clonazepam, or lorazepam) or opiates (such as codeine or morphine), confirmed by interview and urine testing
  • People currently taking medications that are known to interact significantly with either telmisartan or verapamil (the two components of HB-1) — this includes a wide range of drugs such as certain cholesterol medications, heart rhythm medications, lithium, carbamazepine, rifampin, cyclosporin, and several others (confirm full list with trial site)
  • People diagnosed with severe substance use disorder, obsessive-compulsive disorder (OCD), bipolar I or II disorder, a psychotic disorder, or borderline personality disorder
  • People with active thoughts of suicide or self-harm reaching a certain level of severity on a standard scale (C-SSRS score of 4 or above at screening), or who have made a serious suicide attempt in the past 3 months
  • People who have had serious uncontrolled heart problems in the 6 months before screening, including severely uncontrolled high or low blood pressure, unstable chest pain, heart attack, or stroke
  • People with significant abnormalities on a heart tracing (ECG) at screening
  • People whose liver is not functioning adequately, based on specific blood test results
  • People whose kidneys are not functioning adequately, based on specific blood test results
  • People with any other significant abnormal results on standard laboratory tests, as determined by the trial doctor
  • People who are already taking telmisartan, verapamil, or both
  • People who have a documented reason they cannot take telmisartan or verapamil, such as a prior allergic reaction to either drug, Duchenne's muscular dystrophy, or myasthenia gravis
  • People who are pregnant or breastfeeding
  • People currently participating in another clinical trial, or who have participated in one within the past 3 months
  • People whose urine test shows exposure to substances that could interfere with HB-1 testing, as determined by the trial doctor

Important: Always verify eligibility with the trial site directly before applying.

Based on publicly available eligibility criteria from ClinicalTrials.gov. Verify directly with the trial site before acting. This is not medical advice.

This is a simplified plain English summary of the eligibility criteria. Full criteria are set by the trial investigators and may include additional requirements not shown here. Never self-exclude from a trial based on this summary. Contact the trial site directly to confirm your eligibility.
Last synced 28 July 2026
Phase 2: approximately ~30% of drugs entering this phase reach regulatory approval, based on published industry-wide historical data. This is not specific to this trial.
Phase success rates shown are historical industry-wide averages based on published data. They are not a prediction for this specific trial or your individual situation.

Contact this trial

Phone: +1-650-722-9813

Australian sites

Paratus Clinical Research Canberra, Bruce, Australian Capital Territory
+61 1300 742 326
Novatrials, Charlestown, New South Wales
+61 2 4089 3744
East Sydney Doctors, Darlinghurst, New South Wales
+61 2 9332 2531
Innovate Clinical Research, Waitara, New South Wales
+61 2 9159 3838
WSLHD Mental Health Services, Westmead Hospital, Westmead, New South Wales
+61 2 8890 6688
Paratus Clinical Research Brisbane, Herston, Queensland
+61 1300 742 326
Mackay Hospital and Health Service, Mackay, Queensland
+61 7 4885 6000
University of the Sunshine Coast Clinical Trials, Morayfield, Morayfield, Queensland
+61 7 5409 8644
University of the Sunshine Coast Clinical Trials, Sippy Downs, Sippy Downs, Queensland
+61 7 5409 8644
South Australian Health and Medical Research Institute, Adelaide, South Australia
NeuroCentrix, Carlton, Victoria
+61 3 9546 0009
Peninsula Therapeutic and Research Group, Frankston, Victoria
+61 3 9770 1579
Monash Alfred Psychiatry Research Centre, Melbourne, Victoria
+61 3 9076 6924
Ramsay Clinic Albert Road, Melbourne, Victoria
+61 3 9279 3569
Paratus Clinical Research Melbourne, Northcote, Victoria
+61 1300 742 326

Contact details sourced from ClinicalTrials.gov. Verify directly with the trial site before attending.

GP referral letter

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Trial details

Status
Recruiting
Phase
Phase 2
Sponsor
HB BioTech, LLC
Registry
ClinicalTrials.gov
Start date
1 June 2026
Est. completion
1 September 2027

Where this trial is recruiting

🇦🇺 Australia

15 site(s) in Australia. Confirm current status and contact details directly with the trial site.

Primary endpoints

To measure the efficacy of HB-1 on clinician-rated symptoms of Post-Traumatic Stress Disorder in male and female adults (age 18 to 65 years) with Post-Traumatic Stress Disorder.

Can't join this trial?

Expanded access pathways

If this trial is not available to you, other access pathways may exist. In Australia, the TGA Special Access Scheme allows access to unapproved therapeutic goods for individual patients.

TGA Special Access Scheme information

Find other recruiting trials on ClinicalTrials.gov

Data last synced from ClinicalTrials.gov: 28 July 2026. Trial status can change. Always verify current status directly with the trial site before making any decision.

Trial recruitment status can change without notice between our nightly data updates. Always contact the trial site directly to confirm current recruitment status before making any decisions or travel arrangements.

View original record on ClinicalTrials.gov