Trial Outcomes & Findings for K0706 for Patients Diagnosed With Dementia With Lewy Bodies (NCT NCT03996460)

K0706 for Patients Diagnosed With Dementia With Lewy Bodies

The investigators will determine safety and tolerability by using the occurrence of adverse events (AEs) of interest, including myelosuppression, urinary, pancreatic and hepatic disorders, gastrointestinal (GI), kidney disorders, Corrected QT-interval (QTc)prolongation as per SPARC Ltd Investigator Brochure (IB).

DLB related plasma biomarkers, including alpha-synuclein, HVA, DOPAC were measured at Baseline and 12 weeks.

Concentration of DLB related CSF biomarkers, including HVA, DOPAC, Abeta40/42, total tau, ptau231/181 and total and oligomeric alpha-synuclein were measured at Baseline and 12 weeks.

Ratio of HVA to Dopamine, and Dopamine to HVA in the plasma at Baseline, and 12 weeks The ratio of HVA to DA is a biochemical marker used to measure dopamine turnover, reflecting the rate at which dopamine is synthesized, released, and subsequently broken down in the central nervous system. High Ratio: Indicates rapid metabolism/degradation of dopamine. Low Ratio: May suggest lower turnover or reduced activity in dopaminergic pathways. HVA/DOPAC Ratio (Optimal): 0.1 - 1.8.; a ratio above 1.8 suggests accelerated turnover, typically seen in Parkinson's Disease

Ratio of DLB related CSF biomarkers, including Abeta42 to Abeta40, phospho-Tau(181) to Abeta42, and phospho-tau181 to Total Tau at Baseline and 12 weeks. Ab42/Ab40 ratio is a biomarker used to assess Alzheimer's disease (AD) risk. A lower ratio indicates a higher likelihood of amyloid plaque accumulation in the brain and AD pathology. The ptau(181)/Ab42 ratio is a clinical biomarker used to identify AD pathology by measuring the balance between tau protein phosphorylation and amyloid-beta accumulation. Higher ratio values typically indicate a higher likelihood of amyloid and tau pathology in the brain. P-tau181 and its ratio to total tau (t-tau) or other amyloid markers are effective indicators of AD pathology. Reference Range/Ratio: A 95% reference interval for the p-tau181/t-tau ratio has been reported as 0.38-6.34, with higher values indicating a higher likelihood of AD pathology.

The MoCA is designed as a rapid screening instrument for mild cognitive dysfunction. It assesses different cognitive domains, including attention and concentration, executive functions, memory, language, visuo-constructional skills, conceptual thinking, calculations and orientation. Scores range between 0 and 30 where 30 is the highest score and 0 is the lowest score.

The Trail Making Test (TMT) is a neuropsychological test of visual attention and task switching. It consists of two parts in which the subject is instructed to connect a set of 25 dots as quickly as possible while still maintaining accuracy. The test can provide information about visual search speed, scanning, speed of processing, mental flexibility, as well as executive functioning. The time to complete the test is measured in seconds. Lower times indicate better executive function, while higher scores suggest impairment.

The 14-item Alzheimer's Disease Assessment Scale-Cognitive subscale (ADAS-Cog14) measures cognitive impairment, with higher scores (0-90) indicating greater disability.

ADCS-ADL is an activity of daily living inventory to assess functional performance. Using a structured interview format, study partners are queried as to whether participants attempted each item in the inventory during the prior 4 weeks and their level of performance. The ADCS-ADL includes some items from traditional basic ADL tests as well as instrumental (complex) activities of daily living. It is a 23 item scale that provide a total score from 0-78 with a lower score indicating greater severity; 0 is the minimum score and 78 is the maximum score.

UPDRS-I-III is used to follow the longitudinal course of Parkinson's disease. The UPDRS is made up of these sections: Part I: evaluation of mentation, behavior, and mood. Part II: self-evaluation of the activities of daily life (ADLs) Part III: clinician-scored monitored motor evaluation. Part IV: complications of therapy. Part V: Hoehn and Yahr staging of severity of Parkinson's disease. The minimum possible score on the UPDRS is 0, which indicates no disability or no symptoms of Parkinson's disease. The scale, used to assess severity, typically ranges from 0 to 199 (total) (199 being the maximum) or 0 to 108 (motor section, Part III) (108 being maximum). Higher scores on the Unified Parkinson's Disease Rating Scale (UPDRS) Parts I-III indicate increased severity of disease, greater disability, and more significant impairment, while lower scores signify better function.

Timed Up and Go (TUG) is an assessment of mobility, balance, walking ability, and fall risk. It measures the time that a person takes to rise from a chair, walk three meters, turn around, walk back to the chair, and sit down. This assessment is measured in seconds. A score of less than 10 seconds is normal, 14-20 seconds indicates a high fall risk or frailty, and over 30 seconds suggests significant mobility impairment.