Recent Updates
Recently added Catalysts

DDY391

Phase 2

Sjögren's Disease | Small molecule | Other |Novartis AG|Last Updated: Sep 4, 2026

Success Probability

Subscribe to view

Market & Valuation

Subscribe to view

Trial Design

RandomizedDouble-BlindCONTROLLEDDMC
Total Trials1
Total Enrollment344

FDA Designations

No designations recorded

Clinical trial landscape

DDY391 · 1 trial · 1 indication

Phase 2 1
NCT07737743A Phase 2a/b Study to Assess the Efficacy, Safety and Tolerability of DDY391 in Participants With Sjögren's DiseaseSjögren's Disease
RECRUITING344 Analytics
PHASE2RECRUITING
A Phase 2a/b Study to Assess the Efficacy, Safety and Tolerability of DDY391 in Participants With Sjögren's Disease
Sjögren's DiseaseUnlock trial analytics

Study Endpoints

Primary Endpoints

Part A and B: Change from baseline in ESSDAI score
Baseline, Week 24

EULAR Sjögren's Syndrome Disease Activity Index (ESSDAI) is a validated tool for assessing disease activity in SjD. Score range is 0-123. Higher scores on the ESSDAI scale are associated with poorer health states. A negative change from baseline indicates improvement in disease status.

Part C: Change from baseline in ESSPRI
Baseline, Week 24

EULAR Sjögren's Syndrome Patient Reported Index (ESSPRI) is a validated disease outcome measure for SjD. It consists of three domains of dryness, pain, and fatigue. The participant will assess severity of symptoms they experienced over the last 14 days on a single 0-10 numerical rating scale for each of the three domains. The ESSPRI score is defined as the mean of scores from the three scales: (dryness + pain + fatigue) /3. The total ESSPRI score ranges from 0 (no symptoms) to 10 (maximal symptom severity).

Secondary Endpoints

Part A and B: Change from baseline in ESSPRI
Baseline, Week 24
Part A, B and C: Change from baseline in SSSD
Baseline, Week 24
Part A, B and C: Incidence and severity of Adverse Events (AEs) and Serious Adverse Events (SAEs)
Baseline up to Week 52
Unlock Study Endpoints

Study Design & Arms

AllocationRANDOMIZED
MaskingTRIPLE
ModelSEQUENTIAL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
Part A- DDY391 dose level 1EXPERIMENTALDDY391 dose level 1
Part A-PlaceboEXPERIMENTALMatching placebo. At the Week 24 visit, all participants will be randomized to DDY391 dose level 1 or dose level 2.
Part B- DDY391 dose level 1EXPERIMENTALDDY391 dose level 1
Part B- DDY391 dose level 2EXPERIMENTALDDY391 dose level 2
Part B- DDY391 dose level 3EXPERIMENTALDDY391 dose level 3
Part B- PlaceboEXPERIMENTALMatching placebo. At the Week 24 visit, all participants will be randomized to DDY391 dose level 1 or dose level 2.
Part C- DDY391 dose level 1EXPERIMENTALDDY391 dose level 1
Part C- PlaceboEXPERIMENTALMatching placebo. At the Week 24 visit, all participants will be randomized to DDY391 dose level 1 or dose level 2.

Interventions

NameTypeDescription
DDY391DRUGDDY391 dose level 1 DDY391 dose level 2 DDY391 dose level 3
PlaceboDRUGMatching Placebo
Unlock Study Design Details

Eligibility Criteria

Age Range18 Years to 100 Years
SexALL
Healthy VolunteersNo
Study Sites9

Key Inclusion Criteria: • Participants must have a diagnosis of SjD according to the ACR/EULAR 2016 classification criteria at screening: \- Positive anti-Ro (SSA) antibodies at screening. Participants negative for anti-Ro/SSA antibodies are eligible if they have documented previous biopsy showing...

Countries:United StatesAustraliaCanadaIsrael
Unlock Eligibility Criteria

Recent Changes (Last 90 Days)

LOWSep 4, 2026NCT07737743Status: NOT_YET_RECRUITING → RECRUITING
LOWJul 30, 2026NCT07737743NEW_TRIAL: changed
LOWJul 30, 2026NCT07737743NEW_TRIAL: changed

Frequently asked questions about DDY391

What is DDY391 used for?

DDY391 is an investigational small molecule being developed for the treatment of Sjögren's Disease, an autoimmune condition that primarily affects moisture-producing glands. It is currently in Phase 2 clinical development and has not been approved by regulatory authorities.

Who makes DDY391?

DDY391 is being developed by Novartis AG, a multinational pharmaceutical company listed on the New York Stock Exchange under the ticker symbol NVS. The company is conducting clinical trials to evaluate the drug's efficacy, safety, and tolerability in patients with Sjögren's Disease.

What phase is DDY391 in?

DDY391 is currently in Phase 2 clinical development. It is being studied in a Phase 2a/b trial designed to assess its efficacy, safety, and tolerability in participants with Sjögren's Disease. The drug is investigational and has not yet received regulatory approval.

What clinical trials is DDY391 in?

DDY391 is being evaluated in a single Phase 2a/b clinical trial registered as NCT07737743. This randomized, double-blind, controlled study aims to enroll 344 participants aged 18 years and older with Sjögren's Disease. The trial is not yet recruiting participants.

Is DDY391 FDA approved?

DDY391 is not FDA approved. It is an investigational drug currently in Phase 2 clinical development for Sjögren's Disease. The ongoing clinical trial is designed to assess its efficacy, safety, and tolerability, but the drug has not yet been authorized for commercial use.