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LXE408

Phase 2

Chagas Disease | Small molecule | Infectious Disease |Novartis AG|Last Updated: Aug 19, 2026

Success Probability

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Trial Design

RandomizedDouble-BlindPLACEBO_CONTROLLED
Total Trials1
Total Enrollment130

FDA Designations

No designations recorded

Clinical trial landscape

LXE408 · 3 trials · 3 indications

Phase 2 3
NCT06997159A Clinical Trial to Investigate Efficacy, Safety and Pharmacokinetics (PK) of Two LXE408 Oral Regimens and Oral Miltefosine as Active Control in Participants Aged ≥ 18 Years Old With Localized Cutaneous Leishmaniasis in the Region of the Americas (AMR).Localized Cutaneous Leishmaniasis
NOT YET_RECRUITING250 Analytics
NCT06632600A Study of Efficacy, Safety, Tolerability of LXE408 in Participants With Chronic Chagas Disease.Chagas Disease
RECRUITING130 Analytics
NCT05593666A Phase II, Multicentre, Randomized, Two-arm Blinded Study to Assess the Efficacy and Safety of Two LXE408 Regimens for Treatment of Patients With Primary Visceral LeishmaniasisPrimary Visceral Leishmaniasis
COMPLETED101 Analytics
PHASE2NOT YET_RECRUITING
A Clinical Trial to Investigate Efficacy, Safety and Pharmacokinetics (PK) of Two LXE408 Oral Regimens and Oral Miltefosine as Active Control in Participants Aged ≥ 18 Years Old With Localized Cutaneous Leishmaniasis in the Region of the Americas (AMR).
Localized Cutaneous LeishmaniasisUnlock trial analytics
PHASE2RECRUITING
A Study of Efficacy, Safety, Tolerability of LXE408 in Participants With Chronic Chagas Disease.
Chagas DiseaseUnlock trial analytics
PHASE2COMPLETED
A Phase II, Multicentre, Randomized, Two-arm Blinded Study to Assess the Efficacy and Safety of Two LXE408 Regimens for Treatment of Patients With Primary Visceral Leishmaniasis
Primary Visceral LeishmaniasisUnlock trial analytics

Study Endpoints

Primary Endpoints

Proportion of participants who achieved Cure at Day 180
180 days

Cure at Day 180 (D180) is defined as: * 100% re-epithelialization of ulcerated lesions (if any) or flattening and/or no signs of induration of non-ulcerated lesions (if any) up to and at D90 and, * no relapse by D180, and * no rescue therapy up to D180 * no death, regardless of cause, up to D180

Presence or absence of sustained parasitological clearance using polymerase chain reaction (PCR) results over 6 months - LXE408 28 days versus placebo.
At Months 2, 4, and 6

The parasitological load will be measured using polymerase chain reaction (PCR) at 2 months, 4 months, and at 6 months. At each timepoint, multiple samples are evaluated. The participant will be considered negative at a visit if the parasite is not detectable in all samples at a visit and positive if the parasite level is detectable in at least one sample. Sustained parasitological clearance is achieved if participant is negative at all 3 visits.

Proportion of patients with initial cure at Day 28 for LXE408
Day 28

Initial cure defined as clinical improvement of Visceral leishmaniasis (VL), absence of parasites in the spleen or bone marrow (microscopy), and no rescue therapy on or before Day 28.

Secondary Endpoints

Proportion of participants with treatment-emergent adverse events (TEAEs) and SAEs
180 days
Proportion of participants with • Abnormalities from physical exam, vital signs, ECGs and safety laboratory assessments
180 days
Proportion of participants who achieved Cure at Day 90
90 days
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Study Design & Arms

AllocationRANDOMIZED
MaskingDOUBLE
ModelPARALLEL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
LXE408 BID for 14 daysEXPERIMENTALLXE408 BID for 14 days followed by placebo BID for 14 days.
LXE408 BID for 28 daysEXPERIMENTAL -
Miltefosine 50 mg PO TID for 28 daysACTIVE_COMPARATOR -
LXE408 28 daysEXPERIMENTALLXE408 administered by oral route
LXE408 14 days and Placebo 14 daysEXPERIMENTALLXE408 administered by oral route, followed by Placebo administered by oral route
Placebo 28 daysPLACEBO_COMPARATORPlacebo administered by oral route
Benznidazole 60 daysACTIVE_COMPARATORBenznidazole administered by oral route
LXE408 short regimenEXPERIMENTALLXE408 once daily for seven days (followed by 7 days of placebo).
LXE408 long regimenEXPERIMENTALLXE408 once daily for 14 days
Standard of careACTIVE_COMPARATORAmBisome® 10 mg/kg IV single dose (SDA)

Interventions

NameTypeDescription
LXE408DRUGLXE408 film-coated tablets.
Miltefosine 50 MG Oral Capsule [Impavido]DRUGEach capsule contains 50 mg miltefosine in an opaque, red, hard gelatin capsule. Capsules are supplied in packs of 56 capsules sealed in 8 aluminum blister stripes, each containing 7 capsules.
Placebo to LXE408DRUGFilm-coated tablets.
PlaceboDRUGPlacebo administered by oral route
BenznidazoleDRUGBenznidazole administered by oral route (administered as standard of care)
AmBisome®DRUGSterile lyophilised powder in a 15 mL sterile clear glass vial
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Eligibility Criteria

Age Range18 Years to N/A
SexALL
Healthy VolunteersNo
Study Sites5

Inclusion Criteria: 1. Participant must be aged ≥18 years old and weighing \> 50kg 2. Participant with first episode of CL fulfilling the following characteristics: * ≤ 6 lesions * At least one lesion of \> 50 mm2 of area * a history of CL of no longer than 6 months 3. a diagnosis of CL c...

Countries:BrazilPanamaUnited StatesArgentinaColombiaIndia
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Recent Changes (Last 90 Days)

LOWAug 20, 2026NCT06632600lastUpdatePostDate: changed
LOWAug 20, 2026NCT06632600lastUpdatePostDate: changed
LOWAug 20, 2026NCT06632600lastUpdatePostDate: changed
LOWAug 20, 2026NCT06632600lastUpdatePostDate: changed
MEDIUMJul 27, 2026NCT06632600primaryCompletionDate: changed
MEDIUMJul 27, 2026NCT06632600primaryCompletionDate: changed
MEDIUMJul 27, 2026NCT06632600primaryCompletionDate: changed

Frequently asked questions about LXE408

What is LXE408 used for?

LXE408 is an investigational small molecule being developed for three infectious diseases: Chagas disease, localized cutaneous leishmaniasis, and primary visceral leishmaniasis. It is currently in Phase 2 clinical development and is not approved by the FDA.

Who makes LXE408?

LXE408 is being developed by Novartis AG, a multinational pharmaceutical company traded on the New York Stock Exchange under the ticker symbol NVS. The company is conducting multiple Phase 2 trials of the drug across different countries.

What phase is LXE408 in?

LXE408 is in Phase 2 clinical development. It is an investigational drug and has not received FDA approval. There are three Phase 2 trials listed for the drug, with one completed, one recruiting, and one not yet recruiting.

What clinical trials is LXE408 in?

LXE408 has three Phase 2 trials. NCT05593666 is a completed study in primary visceral leishmaniasis in India. NCT06632600 is recruiting for chronic Chagas disease in the US, Argentina, Brazil, and Colombia. NCT06997159 is not yet recruiting for localized cutaneous leishmaniasis in Brazil and Panama.

How does LXE408 work?

LXE408 is a small molecule, but its specific molecular target has not been disclosed. It is being studied for its efficacy and safety in treating parasitic infections including Chagas disease and leishmaniasis.

Is LXE408 the same as miltefosine?

No, LXE408 is not the same as miltefosine. In one clinical trial, miltefosine is used as an active control to compare the efficacy and safety of two LXE408 oral regimens in participants with localized cutaneous leishmaniasis.