Dual Modulation of Sigma-1 and NMDA Receptors in the Treatment of Schizophrenia

ConditionSchizophrenia
Trial statusRecruiting
Trial phasePhase 2
Trial typeInterventional
Biological sexAll
Age18-65
SponsorChina Medical University Hospital

About this trial

sigma-1 receptor (S1R) agonistic property have been tested in clinical trials for the treatment of schizophrenia. In addition, previous studies found that some NMDA receptor (NMDAR)-enhancing agents were able to improve clinical symptoms of patients with chronic schizophrenia. Whether combined treatment of an S1R agonist and an NMDA-enhancing agent can be better than an S1R agonist alone deserves study.

Eligibility criteria

Qualifiers

Have a DSM-5 (American Psychiatric Association) diagnosis of schizophrenia

Are resistant to adequate treatments of at least two antipsychotics (excluding clozapine)

Remain symptomatic but without clinically significant fluctuation, while their antipsychotic doses are unchanged for at least 3 months and will be maintained during the period of the 8-week trial

PANSS total score >70

Disqualifiers

DSM-5 diagnosis of intellectual disability or substance (including alcohol) use disorder

History of epilepsy, head trauma, central nervous system diseases or mental disorders other than schizophrenia (including major depressive disorder, bipolar disorders, persistent depressive disorder, obsessive-compulsive disorder)

Pregnancy or lactation

Inability to follow protocol

Trial design

Treatments tested in this trial

  • S1RA plus NMDAE
  • S1RA plus Placebo Cap

Treatment groups

90 Participants
are divided into 2 treatment groups