A Study of JNJ-99245354 (ITI-1284) as an Adjunctive Treatment in Participants With Generalized Anxiety Disorder (GAD) Who Have an Inadequate Response to GAD Treatment
Medically stable on the basis of physical examination, medical history, vital signs, and 12-lead electrocardiogram (ECG) performed at screening and at baseline
Medically stable on the basis of clinical laboratory tests performed at screening
History of inadequate response to at least 1 generalized anxiety disorder (GAD)-approved treatment taken at an adequate dose and duration as specified in the protocol for the treatment of ongoing GAD symptoms
Is currently an outpatient and is anticipated to maintain outpatient status for the duration of the double blind (DB) treatment period of the trial
Body mass index (BMI) within the range 19-40 kilogram per meter squared (kg/m\^2) (inclusive)
You may not be if
Within the participant's lifetime, has one of the following confirmed diagnostic and statistical manual of mental disorders (5th edition) (DSM-5) text revision (TR) psychiatric diagnoses: a. schizophrenia, schizoaffective disorder, schizophreniform disorder or other psychotic disorder; b. bipolar disorder
Within 6 months of screening, has a confirmed DSM-5-TR psychiatric diagnosis other than GAD, including: a. other anxiety disorders (except simple phobias and social anxiety disorder); b. moderate or severe alcohol or substance use disorders (excluding nicotine); d. moderate or severe major depressive disorder; e. any other psychiatric condition (except for mild major depressive disorder \[MDD\]) that has been the main focus of treatment
Montgomery-asberg depression rating scale (MADRS) total score greater than (\>)18 at screening or baseline
Lifetime history of inadequate response to \>3 of the approved treatments for GAD at an adequate dose and for an adequate duration
The participant is taking more than 1 anti depressive therapy (ADT) or is taking ADT + buspirone at screening, regardless of indication, and is unable or unwilling to discontinue additional ADT (or buspirone) prior to baseline
Clareo Health | A Study of JNJ-99245354 (ITI-1284) as an Adjunctive Treatment in Participants With Generalized Anxiety Disorder (GAD) Who Have an Inadequate Response to GAD Treatment