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CIDARA corporate presentation June 2025

CD388 (mAb)


Developer(s)

Cidara Therapeutics

Originator
https://www.cidara.com/

United States

Cidara is developing targeted immunotherapies designed to save lives and improve the standard of care for patients facing serious diseases. The Company’s proprietary Cloudbreak® platform enables development of novel drug-Fc conjugates (DFCs) that inhibit specific disease targets while simultaneously engaging the immune system.


Drug structure

CD388

CD388

CIDARA corporate presentation June 2025


Drug information

Associated long-acting platforms

Monoclonal antibodies and antibody drug conjugates

Administration route

Subcutaneous, Intramuscular

Therapeutic area(s)

Other(s) : "influenza virus"

Use case(s)

Pre-Exposure Prophylaxis (PrEP)
Prevention

Use of drug

Ease of administration

Administered by a nurse
Administered by a specialty health worker

Frequency of administration

Every 6 months

User acceptance

To be determined - Stability demonstrated for 24 months at -20°C or 5°C

Dosage

Available dose and strength

investigational

Maximum dose

unknown

Recommended dosing regimen

investigated doses appear to be at 450mg (one single dose corresponds to 3 SQ injections of 150mg) for the phase 3 ANCHOR clinical trial

Additional comments

Stability demonstrated for 24 months at -20°C or 5°C

Dosage link(s)

Not provided


Drug information

Drug's link(s)

Not provided

Generic name

CD388

Brand name

investigational

Compound type

Biotherapeutic

Drug class/category

Not provided

Summary

CD388 is an antiviral drug–Fc conjugate (DFC), created by attaching multiple copies of the neuraminidase inhibitor zanamivir to an antibody Fc fragment recognizing a highly conserved target on the influenza surface. Due to its long-acting properties, this product could be suited for a pre-exposure prophylaxis approach to prevent seasonal influenza. Company representative described CD388 at IDweek2024 as a ""potential effective and well-tolerated DFC for single-dose, season-long prevention of influenza

Approval status

CD388 is an investigational candidate. A phase 3 trial was initiated in September 2025 (ANCHOR)

Regulatory authorities

U.S. Food and Drug Administration (FDA) has granted Breakthrough Therapy designation for CD388 for prevention of influenza A and B in adults and adolescents who are at higher risk of influenza complications due to underlying immunodeficiency, are at higher risk of severe influenza despite influenza vaccination, or those for whom vaccines are contraindicated.

Delivery device(s)

Not provided


Scale-up and manufacturing prospects

Scale-up prospects

unknown

Tentative equipment list for manufacturing

unknown

Manufacturing

unknown

Specific analytical instrument required for characterization of formulation

unknown


Clinical trials

NAVIGATE

Identifier

NCT06609460

Link

https://clinicaltrials.gov/study/nct06609460

Phase

Phase II

Status

Active, not recruiting

Sponsor

Cidara Therapeutics Inc.

More details

The purpose of this study is to evaluate the effectiveness of CD388 in preventing symptomatic laboratory-confirmed influenza infections, as compared to placebo, and to select a dose of CD388 that is effective in preventing the same, when administered as a single dose via 3 subcutaneous (SQ) injections to adult participants in stable health, and to evaluate the safety and tolerability of CD388, as compared to placebo.

Purpose

Study of CD388 for the Prevention of Influenza in Subjects Not at Risk for Influenza Complications

Interventions

Intervention 1

CD388 Injection
Dosage: low-SQ

Intervention 2

CD388 Injection
Dosage: high-SQ

Intervention 3

CD388 Injection
Dosage: medium-SQ

Intervention 4

Placebo

Countries

United States of America
United Kingdom

Sites / Institutions

Not provided

Trials dates

Anticipated Start Date
Not provided

Actual Start Date
2024-09-20

Anticipated Date of Last Follow-up
2025-03-12

Estimated Primary Completion Date
2025-09-01

Estimated Completion Date
2025-09-01

Actual Primary Completion Date
Not provided

Actual Completion Date
Not provided

Studied populations

Age Cohort

Genders

Accepts pregnant individuals
No

Accepts lactating individuals
Unspecified

Accepts healthy individuals
Yes

Comments about the studied populations

Inclusion Criteria: 1. Willing and able to provide written informed consent and comply with scheduled visits, laboratory tests, and other study procedures. 2. Males and females 18 to less than 64 years of age. 3. In the Investigator's clinical judgment, is in stable health at the time of screening and randomization. Participants may not have underlying hematologic, oncologic, renal, autoimmune, and/or cardiopulmonary illnesses or be considered at risk of developing complications from influenza infection per the CDC guidelines (chronic obstructive pulmonary disease \[COPD\], asthma, immune compromised current cancer \[except non-melanomatous skin cancer\], or diabetes). Subjects will be included on the basis of medical history and vital signs taken between signing of the informed consent a

Health status

Not provided

Study type

Interventional (clinical trial)

Enrollment

5000

Allocation

Randomized

Intervention model

Parallel Assignment

Intervention model description

Not provided

Masking

Quadruple-blind masking

Masking description

Not provided

Frequency of administration

Once

Studied LA-formulation(s)

Injectable

Studied route(s) of administration

Subcutaneous

Use case

Prevention

Key resources

Type Title Content Link
Link NAVIGATE 2b- CIDARA therapeutics - Corporate presentation - June 2025 https://www.cidara.com/wp-content/uploads/2025/06/Cidara-Corporate-Presentation_NAVIGATE-Ph2B-data-readout_FINAL.pdf

CD388.SQ.2.02

Identifier

NCT05523089

Link

https://clinicaltrials.gov/study/NCT05523089

Phase

Phase II

Status

Completed

Sponsor

Cidara Therapeutics Inc.

More details

The purpose of this study is to evaluate the preventative antiviral activity of CD388, as compared to saline placebo, when administered as a single dose to healthy adult participants in a human viral challenge model of influenza.

Purpose

The Effectiveness of CD388 to Prevent Flu in an Influenza Challenge Model in Healthy Adults

Interventions

Intervention 1

Saline placebo

Intervention 2

CD388

Countries

United Kingdom

Sites / Institutions

Not provided

Trials dates

Anticipated Start Date
Not provided

Actual Start Date
2022-09-09

Anticipated Date of Last Follow-up
2024-09-04

Estimated Primary Completion Date
Not provided

Estimated Completion Date
Not provided

Actual Primary Completion Date
2023-07-17

Actual Completion Date
2023-07-17

Studied populations

Age Cohort

Genders

Accepts pregnant individuals
Unspecified

Accepts lactating individuals
Unspecified

Accepts healthy individuals
Yes

Comments about the studied populations

Inclusion Criteria: 1. Written informed consent signed and dated by the participant and the PI/investigator obtained before any assessment is performed. 2. Adult male or female aged between 18 and 55 years old, inclusive, on the day prior to signing the consent form. 3. A total body weight ≥50 kilograms (kg) and body mass index (BMI) ≥18 kg/meter squared (m\^2) and ≤35kg/m\^2. 4. In good health with no history, or current evidence, of clinically significant medical conditions, and no clinically significant test abnormalities that will interfere with participant safety, as defined by medical history, physical examination (including vital signs), electrocardiogram (ECG), and routine laboratory tests as determined by the Principal Investigator (PI)/investigator. 5. Participants will have a d

Health status

Not provided

Study type

Interventional (clinical trial)

Enrollment

59

Allocation

Randomized

Intervention model

Parallel Assignment

Intervention model description

Not provided

Masking

Quadruple-blind masking

Masking description

Not provided

Frequency of administration

Not provided

Studied LA-formulation(s)

Injectable

Studied route(s) of administration

Subcutaneous

Use case

Prevention

Key resources

Not provided

CD388.IM.SQ.1.01

Identifier

NCT05285137

Link

https://clinicaltrials.gov/study/NCT05285137

Phase

Phase I

Status

Completed

Sponsor

Cidara Therapeutics Inc.

More details

The purpose of this first-in-human study is to determine the safety and tolerability profile of CD388 Injection, as compared to saline placebo, when administered as a single dose to healthy adult subjects by injection either in the muscle or under the skin.

Purpose

Study of CD388 Intramuscular or Subcutaneous Administration in Healthy Subjects

Interventions

Not provided

Countries

United States of America

Sites / Institutions

Not provided

Trials dates

Anticipated Start Date
Not provided

Actual Start Date
2022-03-14

Anticipated Date of Last Follow-up
2025-02-12

Estimated Primary Completion Date
Not provided

Estimated Completion Date
Not provided

Actual Primary Completion Date
2023-10-27

Actual Completion Date
2023-10-27

Studied populations

Age Cohort

Genders

Accepts pregnant individuals
Unspecified

Accepts lactating individuals
Unspecified

Accepts healthy individuals
Yes

Comments about the studied populations

Inclusion Criteria: 1. Willing and able to provide written informed consent. 2. Males and females 18 to 65 years of age, inclusive. 3. A female subject must meet one of the following criteria: 1. If of childbearing potential - agrees to use a highly effective, preferably user-independent method of contraception (failure rate of \<1 percent per year when used consistently and correctly) for at least 30 days prior to screening and agrees to remain on a highly effective method until 205 days after last dose of study medication. Examples of highly-effective methods of contraception include: abstinence from heterosexual intercourse; hormonal contraceptives (birth control pills, injectable/implant/insertable hormonal birth control products, transdermal patch); intrauterine device (with or w

Health status

Not provided

Study type

Interventional (clinical trial)

Enrollment

77

Allocation

Randomized

Intervention model

Sequential assignment

Intervention model description

Not provided

Masking

Quadruple-blind masking

Masking description

Not provided

Frequency of administration

Not provided

Studied LA-formulation(s)

Not provided

Studied route(s) of administration

Not provided

Use case

Prevention

Key resources

Not provided

CD388.SQ.1.03

Identifier

NCT05619536

Link

https://clinicaltrials.gov/study/NCT05619536

Phase

Phase I

Status

Completed

Sponsor

Cidara Therapeutics Inc.

More details

The purpose of this study is to determine the safety and tolerability profile of CD388 Injection, as compared to saline placebo, when dosed by subcutaneous (SQ) administration as a single dose to healthy Japanese adult subjects.

Purpose

Study of CD388 Subcutaneous Administration in Healthy Japanese Subjects

Interventions

Not provided

Countries

United States of America

Sites / Institutions

Not provided

Trials dates

Anticipated Start Date
Not provided

Actual Start Date
2022-10-18

Anticipated Date of Last Follow-up
2024-06-24

Estimated Primary Completion Date
Not provided

Estimated Completion Date
Not provided

Actual Primary Completion Date
2023-07-14

Actual Completion Date
2023-07-14

Studied populations

Age Cohort

Genders

Accepts pregnant individuals
Unspecified

Accepts lactating individuals
Unspecified

Accepts healthy individuals
Yes

Comments about the studied populations

Inclusion Criteria: 1. Must be of Japanese descent with Japanese parents and grandparents, as determined by subject's verbal report. 2. Willing and able to provide written informed consent. 3. Males and females 18 to 65 years of age, inclusive. 4. A female subject must meet one of the following criteria: 1. If of childbearing potential - agrees to use a highly effective, preferably user-independent method of contraception (failure rate of \<1 percent per year when used consistently and correctly) for at least 30 days prior to screening and agrees to remain on a highly effective method until 7 months after last dose of study medication, whichever is longer. Examples of highly-effective methods of contraception include: abstinence from heterosexual intercourse; hormonal contraceptives (

Health status

Not provided

Study type

Interventional (clinical trial)

Enrollment

28

Allocation

Randomized

Intervention model

Sequential assignment

Intervention model description

Not provided

Masking

Quadruple-blind masking

Masking description

Not provided

Frequency of administration

Not provided

Studied LA-formulation(s)

Not provided

Studied route(s) of administration

Not provided

Use case

Prevention

Key resources

Not provided

ANCHOR

Identifier

NCT07159763

Link

https://clinicaltrials.gov/study/NCT07159763

Phase

Phase III

Status

Not yet recruiting

Sponsor

Cidara Therapeutics Inc.

More details

The purpose of this study is to evaluate how well CD388 works in preventing symptomatic laboratory-confirmed influenza infections, as compared to placebo, when given as a single dose via 3 subcutaneous (SQ) injections to adult and adolescent participants who are at higher risk of developing influenza complications, and to evaluate the safety and tolerability of CD388, as compared to placebo.

Purpose

A Study to Evaluate the Safety and Efficacy of CD388 for Prevention of Influenza

Interventions

Intervention 1

CD388 Injection

Intervention 2

Placebo

Countries

United States of America

Sites / Institutions

Not provided

Trials dates

Anticipated Start Date
2025-09-01

Actual Start Date
Not provided

Anticipated Date of Last Follow-up
2025-08-29

Estimated Primary Completion Date
2027-01-01

Estimated Completion Date
2027-01-01

Actual Primary Completion Date
Not provided

Actual Completion Date
Not provided

Studied populations

Age Cohort

Genders

Accepts pregnant individuals
No

Accepts lactating individuals
Unspecified

Accepts healthy individuals
Yes

Comments about the studied populations

Based on feedback from the FDA, the study population has been expanded to include generally healthy adults over 65 years old with no specific co-morbidities in addition to other high-risk populations with certain comorbidities and immune compromised status.

Health status

Negative to : other
Other health status: Has negative rapid antigen tests for influenza and severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) prior to dosing at Day 1.

Study type

Interventional (clinical trial)

Enrollment

5500

Allocation

Randomized

Intervention model

Parallel Assignment

Intervention model description

Not provided

Masking

Quadruple-blind masking

Masking description

Not provided

Frequency of administration

Once

Studied LA-formulation(s)

Injectable

Studied route(s) of administration

Subcutaneous

Use case

Prevention

Key resources

Type Title Content Link
Link Cidara Therapeutics Announces Expanded and Accelerated Phase 3 Plan for CD388, a Non-Vaccine Preventative of Seasonal Influenza https://www.cidara.com/news/cidara-therapeutics-announces-expanded-and-accelerated-phase-3-plan-for-cd388-a-non-vaccine-preventative-of-seasonal-influenza/

Excipients

Proprietary excipients used

Not provided

Novel excipients or existing excipients at a concentration above Inactive Ingredients Database (IID) for the specified route of administration

Not provided

Residual solvents used

Not provided


Patent info

Description

CD388 structure (linker + zanamivir dimer)

Brief description

Compositions and methods for the treatment of viral infections include conjugates containing inhibitors of viral neuraminidase and MoT influenza or parainfluenza,

Representative patent

WO2021046549

Category

Compound, combination

Patent holder

CIDARA THERAPEUTICS, INC.

Exclusivity

Not provided

Expiration date

September 8, 2040

Status

Granted: ZA, US, CO, AU, JP, NZ, CN Pending: HK, AE, BR, CA, CL, CR, EA, EC, EP (LMICs: AL, MK, TR, BA, ME, KH, MA, MD, TN, RS), ID, IL, KR, MX, MY, PE, PH, SA, SG, TH, TW, UA, VN, IN Withdrawn: AP

Description

Zanamivir compound

Brief description

Zanamivir compound (broad Markush, and specific structure as example 3) and method for treating influenza

Representative patent

WO1991016320

Category

Compound

Patent holder

BIOTA SCIENTIFIC MANAGEMENT PTY LTD

Exclusivity

Not provided

Expiration date

November 15, 2011

Status

Expired


Supporting material

Publications

There are no publication

Additional documents

No documents were uploaded

Useful links


Access principles

Collaborate for development

Consider on a case by case basis, collaborating on developing long acting products with potential significant public health impact, especially for low- and middle-income countries (LMICs), utilising the referred to long-acting technology

Not provided

Share technical information for match-making assessment

Provide necessary technical information to a potential partner, under confidentiality agreement, to enable preliminary assessment of whether specific medicines of public health importance in LMICs might be compatible with the referred to long-acting technology to achieve a public health benefit

Not provided

Work with MPP to expand access in LMICs

In the event that a product using the referred to long-acting technology is successfully developed, the technology IP holder(s) will work with the Medicines Patent Pool towards putting in place the most appropriate strategy for timely and affordable access in low and middle-income countries, including through licensing

Not provided


Comment & Information

Not provided