The T-CALM study will evaluate whether investigational oral drug CX-8998 decreases the severity of tremors by reducing abnormal activity in certain regions of the brain. The study will utilize a combination of standard clinical trial scales and state-of-the-art digital biomarkers to objectively assess patients’ tremors. The study will also assess side effects of the drug, measure its impact on quality of life and further examine how the drug works.
The study is being conducted with more than 90 participants at multiple medical research centers in the United States. People with essential tremor will participate in the study for 5 weeks. Participants in the study will be randomly assigned to one of two groups – half will receive the study drug and the other half will be given a placebo (sugar pill). In order to scientifically assess the effects of the drug, neither the participants nor the clinical team will know during the study what group each patient is in.
Study participation, testing and medication are all free to participants.
T-CALM is a clinical trial -- a medical research study to explore whether an investigational intervention is safe and effective for humans. The purpose of conducting clinical trials is research, so the trials follow strict scientific standards. These standards protect patients and help produce reliable study results.
Patients with certain medical conditions, as well as healthy individuals, may volunteer to participate in clinical trials to help further medical knowledge and scientific progress.
A clinical trial may find that a new intervention improves patient outcomes, offers no benefit or causes unexpected harm. All of these results are important because they advance medical knowledge and help improve patient care. All new medications like CX-8998 are studied in clinical trials to generate data that can be evaluated by the US Food and Drug Administration (FDA) for safety and effectiveness before being approved for use in the United States.
T-CALM is recruiting more than 90 participants at multiple medical research centers across the United States. If you have been diagnosed with essential tremor, you may be eligible.
You may be able to participate in the study even if you are already taking one medication for tremor. (However, people using Primidone will be asked to discontinue it prior to starting the study.) Other eligibility criteria will be reviewed with the study clinical team before proceeding with enrollment.
Study participation, testing and medication are all free to participants. Some people may receive stipends to cover meals and travel related to study visits.
The brain’s neural network utilizes certain calcium channels, called Cav3, that help control neuronal firing and signaling between brain regions. Some neurological diseases, such as essential tremor, are associated with abnormal activity of these signals. CX-8998 is an oral drug that was designed to selectively modulate Cav3 calcium channel activity in the brain’s neurons, acting as a biological ‘pacemaker’ to help restore the brain’s natural rhythms. Scientific data suggest that CX-8998 reduces tremor by suppressing abnormal Cav3 activity and restoring normal neural signaling in relevant brain regions.
CX-8998 has been studied in nearly 200 people, mostly healthy volunteers and some people with other neurological conditions. CX-8998 is being developed by Cavion, a company developing T-type calcium channel (Cav3) modulating therapies for a range of chronic neurological diseases, including essential tremor, Parkinson’s disease, neuropathic pain, and epilepsy.