A U.S. Double-blind, Placebo-controlled Phase 2 Clinical Trial to Assess the Efficacy, Safety, and Tolerability of a Repeat Dose of Fasedienol Nasal Spray for the Acute Treatment of Anxiety in Adults with Social Anxiety Disorder

This U.S. multicenter, double-blind, placebo-controlled Phase 2 clinical trial is designed to evaluate the efficacy, safety, and tolerability of a repeat intranasal (i.n.) dose of Fasedienol Nasal Spray (fasedienol) (3.2 µg) to relieve symptoms of acute anxiety in adult subjects ages 18 through 65 with Social Anxiety Disorder induced by a public speaking challenge (PSC) in a clinical setting. In addition, safety and tolerability of i.n. administration of 3.2 µg of fasedienol, as-needed, up to 6 times per day for up to 12 months, will be assessed in those subjects who complete PH94B-CL036 and choose to enter the distinct open-label extension phase of the study.


Eligibility Criteria:
Inclusion Criteria:

* Written informed consent provided prior to conducting any study-specific assessment.
* Male and female adults, 18 through 65 years of age, inclusive.
* Current diagnosis of SAD as defined in the Diagnostic and Statistical Manual of Mental Disorders, 5th Edition, and confirmed by the Mini-International Neuropsychiatric Interview (MINI).
* Clinician-rated Liebowitz Social Anxiety Score (LSAS) total score ≥70 at Screening (Visit 1).
* Clinician-rated Hamilton Depression Rating Scale (HAM-D) (17-items) total score \<16.
* Female subjects of childbearing potential must be able to commit to the consistent and correct use of an effective method of birth control throughout the study
* Subjects must have normal olfactory function

Exclusion Criteria:

* Any history of bipolar disorder (I or II), schizophrenia, schizoaffective disorder, psychosis, anorexia or bulimia, premenstrual dysphoric disorder, autism spectrum disorder, or obsessive-compulsive disorder.
* Any other current principal or personality disorder (previously known as Axis I or Axis II disorders), except for specific phobias or generalized anxiety disorder, provided that these are not the primary diagnosis.
* Subjects who meet criteria for moderate or severe alcohol use disorder within the 1 year prior to study entry, or any use of illicit substances or tetrahydrocannabinol ("THC") within 2 months prior to study entry.
* In the opinion of the investigator, the subject has a significant risk for suicidal behavior during the course of their participation in the study, or the subject is considered to be an imminent danger to themself or others.
* Clinically significant nasal pathology or history of significant nasal trauma, nasal surgery, total anosmia, or nasal septum perforation that may have damaged the nasal chemosensory epithelium.
* Two or more documented failed adequate treatment trials with a registered medication approved for SAD.
* Currently receiving cognitive-behavioral therapy (CBT), exposure therapy, or acceptance and commitment therapy.
* Subjects taking psychotropic medications within 30 days before Visit 2.
* Use of any over-the-counter product, prescription product, off-label treatment, cannabidiol ("CBD"), or herbal preparation for treatment of the symptoms of anxiety or social anxiety within 30 days before Visit 2.
* Prior participation in a clinical trial involving fasedienol.
* Participation in any other clinical trial within the last 30 days or during the course of the current trial.
* Subjects with a positive urine drug screen.
* Women who have a positive urine pregnancy test.
* Women who are currently breastfeeding are not eligible unless they are willing to stop breastfeeding for the duration of the study.
* Subjects who have tested positive and/or have exhibited symptoms consistent with SARS-CoV-2 infection during the 4 weeks prior to Screening (Visit 1).
* Any clinically significant medical history or findings as determined by the Investigator that could interfere with the objectives of the study or put the participant at risk.