Georgetown University Medical Center
Neurology
I am Associate Professor of Neurology at Georgetown University Medical Center (GUMC) and director of the Translational Neurotherapeutics Program and the Laboratory for Dementia and Parkinsonism.. I am Principal Investigator of the GUMC Lewy Body Dementia Association (LBDA) Research Center of Excellence. I am co-founder and director of the Scientific Advisory Board of KeiferX, a biopharmaceutical company that aims to develop several targeted therapies for neurodegenerative diseases (https://www.keiferx.com). I have extensive drug development and biomarker discovery experience and I currently have advisory roles in pharmaceutical and biotech companies, including Sun Pharma and SkyBio LLC. I am a translational neuroscientist focused on the role of tyrosine kinases and de-ubiquitinases on protein ubiquitination and proteasome-autophagy clearance. I developed several tyrosine kinase inhibitors (TKIs) and de-ubiquitinase inhibitors that are being investigated as potential therapies for neurodegenerative diseases. I have discovered the potential use and conducted clinical trials investigating cancer drugs nilotinib (Abl/DDR inhibitor) and bosutinib (Src/Abl Inhibitor) in neurodegenerative diseases and identified potential novel drug targets, including discoidin domain receptor (DDR) and ubiquitin specific protease USP)-13 that induce autophagy, eliminate inflammation and preserve blood brain barrier integrity. I am a clinical trialist with extensive expertise in design, execution and regulatory science of IND-enabling studies and Phase I-III clinical trials in neurodegenerative diseases. I consulted broadly on medical, scientific and regulator affairs.

Presenter of 1 Presentation

SAFETY, TARGET ENGAGEMENT AND EFFECTS OF BOSUITNIB IN DEMENTIA WITH LEWY BODIES

Session Type
SYMPOSIUM
Date
Sun, 20.03.2022
Session Time
11:35 AM - 01:20 PM
Room
ONSITE: 114
Lecture Time
12:35 PM - 12:50 PM

Abstract

Aims

Aim- To investigated the safety, biomarkers effects and determine the lowest effective dose of Bosutinib in Dementia with Lewy Bodies (DLB)

Methods

A single center, Phase 2, randomized, double-blind, placebo-controlled study primarily investigated the safety and pharmacokinetics of 12-week oral treatment of bosutinib,100mg. Biomarkers and clinical outcomes were exploratory.

Results

Approximately 120 subjects were approached, 39 were screened, 13 did not meet inclusion criteria and 26 were randomized and included male and female (12:1) in bosutinib and male (13) in placebo with average age 72.94±8.8 (year±SD). There was no serious adverse events (SAEs) and no difference in AEs and no dropouts. Bosutinib, 100mg, was detected in the cerebrospinal fluid (CSF) and inhibited both Abl and Src in plasma. Bosutinib significantly reduced CSF alpha-synuclein (p=0.023) and the ratio of oligomeric/total alpha-synuclein (p=0.045) compared to placebo. There was also significant decrease in plasma oligomeric alpha-synuclein (p=0.04) and ptau181/Aβ42 (p=0.03). Bosutinib significantly (p=0.034) improved activities of daily living (ADCS-ADL-MCI) compared to placebo.

Conclusions

Bosutinib is safe and enters the brain. Bosutinib, 100mg, inhibited Abl/Src indicting dual target engagement, reduced brain alpha-synuclein and improved activities of daily living, suggesting that this is lowest effective dose (100mg) in DLB. This study is underpowered (by design) but the data will guide adequately powered future studies of a higher dose range of bosutinib over longer time (6 months) in DLB.

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