|HETLIOZ® (Tasimelteon) Driving Study Demonstrates No Impairment in Next Morning Performance|
In this triple crossover study, 48 healthy volunteers drove 100 km in a validated driving simulator the morning after taking a bedtime dose of either tasimelteon 20 mg, zopiclone 7.5 mg or placebo. The volunteers were instructed to operate the driving simulator for approximately 1 hour with a speed of 55 mph while maintaining lane position.
Treatment with tasimelteon 20 mg at bedtime demonstrated no next day driving impairment compared to placebo. Treatment with zopiclone 7.5 mg dosed at bedtime was associated with a meaningful and significant increase in Standard Deviation of Lateral Position (SDLP), a measure of lane weaving, compared to the placebo treatment. Results for SDLP, the primary endpoint, are shown below.
Driving Study Results Summary
A secondary analysis of the paired differences between treatments (a symmetry analysis) confirmed that tasimelteon did not impair next day driving while there was an impairment with zopiclone. A difference of 4.4 cm is considered equivalent to the driving impairment associated with a blood alcohol (BAC) level of 0.05%, a level associated with increased crash risk.1
"Compared to other sleep agents where we've investigated next-day residual effects on driving, tasimelteon demonstrated no impairment when evaluated 9 hours after dosing," said
HETLIOZ® is currently approved for the treatment of Non-24 Hour Sleep Wake Disorder. Vanda plans to file a supplemental New Drug Application for HETLIOZ® for the treatment of Jet Lag Disorder with the
HETLIOZ® IS NOT CURRENTLY APPROVED BY ANY REGULATORY AUTHORITY FOR THE TREATMENT OF JET LAG DISORDER.
Zopiclone is a non-benzodiazepine sleep agent marketed at a dose of 7.5 mg in countries outside the U.S. In the U.S., eszopiclone the s-enantiomer of zopiclone, is available under the brand name Lunesta®.
About Driving Safety and Sleep Promoting Agents
Next day driving impairment has been reported for a number of sleep promoting agents including Ambien (zolpidem), the most commonly used prescription drug in the class,3 as well as for the most commonly used over the counter sleep aids containing diphenhydramine (e.g., Excedrin PM®).4
HETLIOZ® is a melatonin receptor agonist. HETLIOZ® has been granted market authorization by the
Important Safety Information
The most common adverse reactions (incidence >5% and at least twice as high on HETLIOZ® (tasimelteon) than on placebo) were headache, increased alanine aminotransferase, nightmares or unusual dreams, and upper respiratory or urinary tract infection. The risk of adverse reactions may be greater in elderly (>65 years) patients than younger patients because exposure to HETLIOZ® is increased by approximately 2-fold compared with younger patients.
HETLIOZ® is indicated for the treatment of Non-24-Hour Sleep-Wake Disorder (Non-24).
Important Safety Information
HETLIOZ® may cause somnolence: After taking HETLIOZ®, patients should limit their activity to preparing for going to bed, because HETLIOZ® can potentially impair the performance of activities requiring complete mental alertness.
The most common adverse reactions (incidence >5% and at least twice as high on HETLIOZ® than on placebo) were headache, increased alanine aminotransferase, nightmares or unusual dreams, and upper respiratory or urinary tract infection. The risk of adverse reactions may be greater in elderly (>65 years) patients than younger patients because exposure to HETLIOZ® is increased by approximately 2-fold compared with younger patients.
Use of HETLIOZ® should be avoided in combination with fluvoxamine or other strong CYP1A2 inhibitors, because of a potentially large increase in exposure of HETLIOZ®, and a greater risk of adverse reactions. HETLIOZ® should be avoided in combination with rifampin or other CYP3A4 inducers, because of a potentially large decrease in exposure of HETLIOZ®, with reduced efficacy.
There are no adequate and well-controlled studies of HETLIOZ® in pregnant women. Based on animal data, HETLIOZ® may cause fetal harm. HETLIOZ® should be used during pregnancy only if the potential benefit justifies the potential risks. Caution should be exercised when HETLIOZ® is administered to a nursing woman.
HETLIOZ® has not been studied in patients with severe hepatic impairment and is not recommended in these patients.
Safety and effectiveness of HETLIOZ® in pediatric patients have not been established.
Vanda is a global biopharmaceutical company focused on the development and commercialization of innovative therapies to address high unmet medical needs and improve the lives of patients. For more on
HETLIOZ® is Vanda's registered trademark. Any other trademarks, registered marks and trade names and service marks appearing in this release are the property of their respective holders.