Open-Label Safety and Efficacy of the Sufentanil Sublingual Tablet 30 mcg for Acute Pain

The study is a multicenter, open-label trial, in patients 18 years and older, who present to
the ER with moderate-to-severe acute pain due to obvious trauma or injury evident on physical
examination.

Upon meeting all entrance criteria, patients will be administered up to four doses of
sufentanil 30 mcg and remain in the study for 5 hours for safety and efficacy measurements.

Safety will be monitored via periodic measurement of vital signs and continuous monitoring of
oxygen saturation, as well as assessment of adverse events (AEs) and the use of concomitant
medications.

Efficacy will be assessed by patient reports of pain intensity (PI) and pain relief. A
Six-Item Screener (SIS) will be administered before and 1 hour after study drug
administration to measure cognitive impairment. The Patient Global Assessment (PGA) and the
Healthcare Professional Global Assessment (HPGA) will assess global satisfaction with the
method of pain control.

Inclusion Criteria:

- Patients who present to the ER with moderate-to-severe pain due to obvious trauma or
injury evident on physical examination.

- Patients classified as American Society of Anesthesiologists (ASA) class I-III

- Patients who are willing and capable of understanding and cooperating with the
requirements of the study.

- Patients able to understand and communicate in English.

- Patients who have provided written informed consent and signed the IRB approved
consent form.

Exclusion Criteria:

- Patients who have taken an opioid for more than 30 consecutive days, at a daily dose
of more than 15 mg of morphine (or equivalent), within the past 3 months (e.g. more
than 3 doses per day of Vicodin®, Norco®, Lortab® with 5 mg hydrocodone per tablet).

- Patients who have used any illicit drugs of abuse, abused prescription medication or
alcohol (4 or more drinks per day) within one year before the start of the study.

- Patients with an allergy or hypersensitivity to opioids.

- Patients who are currently taking monoamine oxidase inhibitors (MAOIs) or have taken
MAOIs within 14 days of the dose of study drug.

- Patients with current sleep apnea that has been documented by a sleep laboratory study
or are on home continuous positive airway pressure (CPAP).

- Female patients who are pregnant (positive pregnancy test) or breastfeeding.

- Patients with a medical condition that, in the Investigator's opinion, could adversely
impact the patient's participation or safety, conduct of the study, or interfere with
the pain assessments, including chronic pain or active infection.

- Patients who present to the ER using supplemental oxygen.

- Patients who have participated in a clinical trial of an investigational drug or
device within 30 days of enrollment.

- Patients who are active or reserve duty with the US military.