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Novel bi-specific immunoprophylactics against multi-drug resistant Gram-negativebacterial infections

Award Number: R01AI138986
ORGANIZATION: NATIONAL INSTITUTE OF ALLERGY & INFECTIOUS DISEASES
OPDIV: NIH
AWARD CLASS: DISCRETIONARY
AWARD ACTIVITY TYPE: SCIENTIFIC/HEALTH RESEARCH (INCLUDES SURVEYS)

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The Centers for Disease Control and Prevention (CDC) estimates that at least two million illnesses and 23,000 deaths annually are caused by antimicrobial-resistant bacteria in the United States. The Gram-negative (G-) pathogens are of particular concern, as they account for roughly 99,000 deaths and $20B in health care costs a year. More alarming, treatment options for G- infections have become increasingly limited due to rapid emergence of multi-drug resistance (MDR) to existing and newly approved antimicrobial agents, highlighting the need for alternative strategies to prevent MDR G- infections. Thus, an agent that leverages immunological mechanisms to prevent infection in high risk populations from drug susceptible and MDR strains would possess a unique advantage in addressing this need. The innovative Cloudbreak™ Antibody Drug Conjugates (ADCs) platform, developed at Cidara Therapeutics, uses a fundamentally new immune-based approach to prevent and treat G- infections. Similar to successful cancer bispecific agents, ADCs bind conserved targets on pathogens via a Targeting Moiety (TM) while simultaneously engaging multiple arms of the immune system via an Effector Moiety (EM). The TM is comprised of a dimeric peptide that binds tightly to lipopolysaccharide (LPS) and confers broad spectrum G- coverage with potent intrinsic antimicrobial activity. The EM is a human IgG1 Fc, which collectively activates complement dependent cytotoxicity (CDC), antibody (Ab)-dependent cell-mediated cytotoxicity (ADCC), and Ab-dependent cell phagocytosis (ADCP) to clear MDR G- pathogens from the host, via recognition by Fcγ receptors on host cells.!This innovative approach involving efficient cell targeting with inherent cell killing catalyzes a robust immune response by more effectively presenting the pathogen to immune components for clearance. CTC-026 is our lead ADC candidate and has demonstrated highly promising properties as an immunoprophylactic agent: broad spectrum antibacterial activity that is both intrinsic and immune-driven, acute safety in rodents, in vivo efficacy in mouse models of Escherichia coli sepsis and Acinetobacter baumannii pneumonia, and a 67 hour plasma half-life in mice. Further optimization of potency and spectrum and in-depth evaluation of pharmacological and toxicological properties of this lead are proposed in this application. The overarching goal of this proposal is to identify a qualified lead development candidate in Year 3 and an Investigational new drug (IND) candidate by the end of Year 5, that meets these criteria: 1) acceptable stability and solubility for IV formulation, 2) MIC90s ≤1 µM against clinical isolates (including MDR) of Klebsiella, Acinetobacter, Pseudomonas and E. coli, 3) MIC90s ≤1 µM against MCR-1, MCR-2 and other colistin- resistant G- clinical isolates, 4) robust in vivo prophylactic efficacy against MDR G- infections in a time window 48-72h prior to infection, 5) PK/PD parameters to support once weekly or better dosing in humans, 6) a NOAEL in GLP toxicology studies in rats and Cynomolgus monkeys at least fivefold higher than the targeted clinical dose, and 7) a scalable synthesis to GMP product.


Issue Date FY	Funding FY	Legal Entity Name	Legal Entity Address	Legal Entity City	Legal Entity State	Legal Entity Zip Code	Legal Entity COUNTY	Legal Entity COUNTRY	Assistance Listing	Award Code	Budget Year	Action Date	Action Type	Action Amount

Issue Date FY: 2025 ( Subtotal = $0 )
2025	2022	HMH HOSPITALS CORPORATION	343 THORNALL ST	EDISON	NJ	08837	MIDDLESEX	USA	Allergy and Infectious Diseases Research	000	5	11/22/2024	NON-COMPETING CONTINUATION	$0
														Subtotal = $0

Issue Date FY: 2022 ( Subtotal = $1,076,832 )
2022	2022	HMH HOSPITALS CORPORATION	343 THORNALL ST	EDISON	NJ	08837	MIDDLESEX	USA	Allergy and Infectious Diseases Research	000	5	4/12/2022	NON-COMPETING CONTINUATION	$1,076,832
														Subtotal = $1,076,832

Issue Date FY: 2021 ( Subtotal = $1,076,832 )
2021	2021	HMH HOSPITALS CORPORATION	343 THORNALL ST	EDISON	NJ	08837	MIDDLESEX	USA	Allergy and Infectious Diseases Research	000	4	3/31/2021	NON-COMPETING CONTINUATION	$1,076,832
														Subtotal = $1,076,832

Issue Date FY: 2020 ( Subtotal = $1,051,346 )
2020	2020	HMH HOSPITALS CORPORATION	343 THORNALL ST	EDISON	NJ	08837	MIDDLESEX	USA	Allergy and Infectious Diseases Research	000	3	4/14/2020	NON-COMPETING CONTINUATION	$1,051,346
														Subtotal = $1,051,346

Issue Date FY: 2019 ( Subtotal = $1,070,621 )
2019	2019	HMH HOSPITALS CORPORATION	343 THORNALL ST	EDISON	NJ	08837	MIDDLESEX	USA	Allergy and Infectious Diseases Research	003	2	5/28/2019	CHANGE OF GRANTEE / TRAINING INSTITUTION / AWARDING INSTITUTION	$1,055,576
2019	2019	HMH HOSPITALS CORPORATION	343 THORNALL ST	EDISON	NJ	08837	MIDDLESEX	USA	Allergy and Infectious Diseases Research	001	2	5/7/2019	CHANGE OF GRANTEE / TRAINING INSTITUTION / AWARDING INSTITUTION	$1,070,621
2019	2018	RUTGERS, THE STATE UNIVERSITY OF NEW JERSEY	185 S ORANGE AVE	NEWARK	NJ	07103	ESSEX	USA	Allergy and Infectious Diseases Research	000	1	5/6/2019	NEW	$0
2019	2018	RUTGERS, THE STATE UNIVERSITY OF NEW JERSEY	185 S ORANGE AVE	NEWARK	NJ	07103	ESSEX	USA	Allergy and Infectious Diseases Research	002	1	5/28/2019	NEW	-$1,055,576
														Subtotal = $1,070,621

Issue Date FY: 2018 ( Subtotal = $1,244,665 )
2018	2018	RUTGERS, THE STATE UNIVERSITY OF NEW JERSEY	185 S ORANGE AVE	NEWARK	NJ	07103	ESSEX	USA	Allergy and Infectious Diseases Research	000	1	4/27/2018	NEW	$1,244,665
														Subtotal = $1,244,665

Grand Total All Awards = $5,520,296

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Novel bi-specific immunoprophylactics against multi-drug resistant Gram-negativebacterial infections

Award Number: R01AI138986

ORGANIZATION: NATIONAL INSTITUTE OF ALLERGY & INFECTIOUS DISEASES

OPDIV: NIH

AWARD CLASS: DISCRETIONARY

AWARD ACTIVITY TYPE: SCIENTIFIC/HEALTH RESEARCH (INCLUDES SURVEYS)

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