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ATRN-119

Phase 1

Acute Myeloid Leukemia | Small molecule | Oncology |Aprea Therapeutics, Inc.|Last Updated: Jun 1, 2026

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Trial Design
CONTROLLEDDMCBiomarker
Total Trials1
Total Enrollment27
FDA Designations
No designations recorded
Clinical trial landscape

ATRN-119 · 3 trials · 8 indications

Phase 1 3
NCT07578467Combining Neo-adjuvant ATR-inhibition With Nodal SBRT for Early-stage Resectable HPV+ OPSCCsHPV Positive Oropharyngeal Squamous Cell Carcinoma
NOT YET_RECRUITING35 Analytics
NCT07617363ATRN-119 in Combination With Decitabine in Patients With TP53-Mutated AML or Higher-Risk MDSAcute Myeloid Leukemia
NOT YET_RECRUITING27 Analytics
NCT04905914Study Of ATRN-119 In Patients With Advanced Solid TumorsAdvanced Solid Tumor
ACTIVE NOT_RECRUITING132 Analytics
PHASE1NOT YET_RECRUITING
Combining Neo-adjuvant ATR-inhibition With Nodal SBRT for Early-stage Resectable HPV+ OPSCCs
HPV Positive Oropharyngeal Squamous Cell CarcinomaUnlock trial analytics
PHASE1NOT YET_RECRUITING
ATRN-119 in Combination With Decitabine in Patients With TP53-Mutated AML or Higher-Risk MDS
Acute Myeloid LeukemiaUnlock trial analytics
PHASE1ACTIVE NOT_RECRUITING
Study Of ATRN-119 In Patients With Advanced Solid Tumors
Advanced Solid TumorUnlock trial analytics
Study Endpoints
Primary Endpoints
Phase Ib: Feasibility of a neo-adjuvant approach combining ATRN with SBRT before TORS
Within 6 weeks after study treatment

This will be judged by whether patients are able to have their planned surgery within 6 weeks after the study treatment, and whether there are no problems during surgery that the study doctor believes were caused by the study treatment.

Phase II: Major pathologic response (MPR) rate of radiated nodal disease
Immediately after standard of care primary tumor removal surgery

Researchers will measure how many patients have a strong treatment response in the affected lymph nodes that were treated with radiation, based on what is seen when the tissue is examined.

Number and grade of treatment-emergent adverse events (TEAEs) as assessed via CTCAE v6.0
From start of treatment until 30 days after last dose of ATRN-119 (approximately 23 months)
Incidence of dose-limiting toxicities (DLTs) during Cycle 1 as assessed via CTCAE v6.0
From Cycle 1 Day 1 to end of Cycle 1 Day 28/Cycle 1 Day 42 (total time 28-42 days)

The DLT evaluation period is 28 days from initiation of study treatment (Cycle 1), except in cases of persistent neutropenia meeting hematologic DLT criteria, for which the observation window will extend to 42 days from treatment initiation. DLTs are defined in the protocol.

Treatment Emergent Adverse Events (TEAEs) will be collected and evaluated based on summary statistics
Day 1 to Day 28

Treatment-emergent AEs (TEAEs) will be collected and Clinical Laboratory Evaluations will be performed

Secondary Endpoints
Phase II: To assess safety of ATR inhibitor ATRN-119 with nodal SBRT prior to surgery
From start of study treatment through standard of care 2-year Follow-Up visit
Phase II: Radiographic response rates
Pre-treatment MRI will be taken prior to enrollment as part of standard of care. Post-treatment Research MRI will be completed 1 week before standard of care tumor removal surgery.
Phase II: Type of adjuvant treatment required
Within 4 months of primary tumor removal surgery
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Study Design & Arms
AllocationNA
MaskingNONE
ModelSINGLE_GROUP
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
Treatment ArmEXPERIMENTALPatients will take 800mg of ATRN-119 every day for 10 days. On day 3 of dosing, they will return to clinic for 1 fraction of SBRT.
Part A Dose Escalation Dose Level 1: ATRN-119 + DecitabineEXPERIMENTALPatients will take 750 mg of ATRN-119 by mouth once per day on Days 1-28 of each 28-day cycle and 20 mg/m\^2 of decitabine given intravenously (IV) on Days 1-5. Patients may continue treatment for up to 24 cycles, or until disease progression, unacceptable toxicity, or withdrawal.
Part A Dose Escalation Dose Level 2: ATRN-119 + DecitabineEXPERIMENTALPatients will take 1000 mg of ATRN-119 by mouth once per day on Days 1-28 of each 28-day cycle and 20 mg/m\^2 of decitabine given intravenously (IV) on Days 1-5. Patients may continue treatment for up to 24 cycles, or until disease progression, unacceptable toxicity, or withdrawal.
Part A Dose Escalation Dose Level -1: ATRN-119 + DecitabineEXPERIMENTALPatients will take 500 mg of ATRN-119 by mouth once per day on Days 1-28 of each 28-day cycle and 20 mg/m\^2 of decitabine given intravenously (IV) on Days 1-5. Patients may continue treatment for up to 24 cycles, or until disease progression, unacceptable toxicity, or withdrawal.
Part B Dose Expansion: ATRN-119 + DecitabineEXPERIMENTALPatients will take the recommended phase 2 dose (RP2D) of ATRN-119 as determined in the dose escalation portion of the trial once per day on Days 1-28 of each 28-day cycle and 20mg/m\^2 of decitabine given intravenously (IV) on Days 1-5. Patients may continue treatment for up to 24 cycles, or until disease progression, unacceptable toxicity, or withdrawal.
50mg ATRN-119EXPERIMENTALOnce daily oral administration.
100mg ATRN-119EXPERIMENTALOnce daily oral administration.
200mg ATRN-119EXPERIMENTALOnce daily oral administration.
350mg ATRN-119EXPERIMENTALOnce daily oral administration.
400mg ATRN-119EXPERIMENTALTwice daily oral administration.
1100mg ATRN-119EXPERIMENTALOnce daily oral administration
1300mg ATRN-119EXPERIMENTALOnce daily oral administration
1500mg ATRN-119EXPERIMENTALOnce daily oral administration
650mg ATRN-119EXPERIMENTALTwice daily oral administration.
750mg ATRN-119EXPERIMENTALTwice daily oral administration.
550mg ATRN-119EXPERIMENTALOnce or twice daily oral administration
800 mg ATRN-119EXPERIMENTALOnce daily oral administration
Interventions
NameTypeDescription
ATRN-119DRUGATRN-119 at 800 mg QD (every day) for 10 days
Stereotactic Body Radiation Therapy (SBRT)RADIATION10 Gy administered to nodal disease (neck) only on day 3 of ATRN-119 dosing
DecitabineDRUGDecitabine is provided as a 50mg injection in a single-dose vial.
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Eligibility Criteria
Age Range18 Years to N/A
SexALL
Healthy VolunteersNo

Inclusion Criteria: * Age ≥ 18 * Patients that have been diagnosed with HPV-positive throat cancer (OPSCC) at an early stage (stage I or II), confirmed by a biopsy. * Patients' blood calcium level is within a safe range * Patients' blood, kidney, and liver health are strong enough, shown through sp...

Countries:United States
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Recent Changes (Last 90 Days)
LOWMay 26, 2026NCT04905914primaryCompletionDate: changed
LOWMay 24, 2026NCT07578467studyFirstPostDate: changed
LOWMay 24, 2026NCT04905914studyFirstPostDate: changed
LOWMay 21, 2026NCT07578467NEW_TRIAL: changed
LOWMay 21, 2026NCT07578467NEW_TRIAL: changed