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Testing the Addition of M6620 (VX-970, Berzosertib) to Usual Chemotherapy and Radiation for Head and Neck Cancer

A Phase I Study of M6620 (VX-970, Berzosertib) in Combination With Cisplatin and XRT in Patients With Locally Advanced Head and Neck Squamous Cell Carcinoma (HNSCC; SDC 10060121)

Status
Active, not recruiting
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT02567422
Enrollment
43
Registered
2015-10-05
Start date
2017-04-17
Completion date
2026-05-14
Last updated
2025-12-04

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Head and Neck Carcinoma of Unknown Primary, Head and Neck Squamous Cell Carcinoma, Stage III Hypopharyngeal Squamous Cell Carcinoma AJCC v7, Stage III Laryngeal Squamous Cell Carcinoma AJCC v6 and v7, Stage III Oral Cavity Squamous Cell Carcinoma AJCC v6 and v7, Stage III Oropharyngeal Squamous Cell Carcinoma AJCC v7, Stage III Sinonasal Squamous Cell Carcinoma AJCC v6 and v7, Stage IV Hypopharyngeal Squamous Cell Carcinoma AJCC v7, Stage IV Laryngeal Squamous Cell Carcinoma AJCC v7, Stage IV Oral Cavity Squamous Cell Carcinoma AJCC v6 and v7, Stage IV Oropharyngeal Squamous Cell Carcinoma AJCC v7, Stage IV Sinonasal Squamous Cell Carcinoma AJCC v7

Brief summary

This phase I trial studies the side effects and best dose of berzosertib (M6620) when given together with cisplatin and radiation therapy in treating patients with head and neck squamous cell carcinoma that has spread from where it started to nearby tissue or lymph nodes (locally advanced). M6620 may stop the growth of tumor cells by blocking some of the enzymes needed for cell growth. Chemotherapy drugs, such as cisplatin, work in different ways to stop the growth of tumor cells, either by killing the cells, by stopping them from dividing, or by stopping them from spreading. Radiation therapy uses high energy x-rays to kill tumor cells and shrink tumors. Giving M6620 together with cisplatin and radiation therapy may work better in treating patients with locally advanced head and neck squamous cell carcinoma.

Detailed description

PRIMARY OBJECTIVES: I. Assess the safety and tolerability of M6620 (VX-970, berzosertib) when administered along with weekly cisplatin and radiation therapy (XRT) in patients with locoregionally advanced head and neck squamous cell carcinoma (HNSCC). II. Establish the recommended phase 2 dose (RP2D) of the combination. SECONDARY OBJECTIVES: I. Characterize the pharmacokinetic (PK) profile of M6620 (VX-970, berzosertib). II. Assess for potential drug-drug interaction between M6620 (VX-970, berzosertib) and aprepitant. III. To observe and record anti-tumor activity. IV. To assess the rate of complete metabolic response (CMR) at 12 weeks post completion of chemoradiation using 18 fluorodeoxyglucose (FDG) positron emission tomography (PET) scans. V. To collect archival tumor material for retrospective analysis of association between tissue-based biomarkers and clinical outcome. OUTLINE: This is a dose-escalation study of berzosertib. Patients receive berzosertib intravenously (IV) over 60 minutes on day -7 and then weekly on day 2 and cisplatin IV over 30-60 minutes weekly on day 1. Patients also undergo radiation therapy once daily, 5 days a week. Treatment continues for up to 7 weeks in the absence of disease progression or unacceptable toxicity. Additionally, patients undergo computed tomography (CT), PET/CT, or magnetic resonance imaging (MRI) throughout the study. After completion of study treatment, patients are followed up for 30 days, every 2 weeks for 3 months, and then every 3 months for 2 years.

Interventions

Given IV

DRUGCisplatin

Given IV

PROCEDUREComputed Tomography

Undergo CT or PET/CT

OTHERLaboratory Biomarker Analysis

Correlative studies

PROCEDUREMagnetic Resonance Imaging

Undergo MRI

PROCEDUREPositron Emission Tomography

Undergo PET/CT

RADIATIONRadiation Therapy

Undergo radiation therapy

Sponsors

National Cancer Institute (NCI)
Lead SponsorNIH

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Patients must have histologically or cytologically confirmed head and neck squamous cell cancer (HNSCC) including paranasal sinus cancers but excluding nasopharyngeal carcinomas * Clinical staged III or IV HNSCC, according to American Joint Committee on Cancer (AJCC) 7th Edition, that is not amenable to surgical resection * Carcinoma of the neck of unknown primary site origin (regardless of HPV/p16 status) is eligible * Age \>= 18 years; because no dosing or adverse event data are currently available on the use of M6620 (VX-970, berzosertib) in combination with cisplatin in patients \< 18 years of age, children are excluded from this study, but will be eligible for future pediatric trials * Eastern Cooperative Oncology Group (ECOG) performance status =\< 2 (Karnofsky \>= 60%) * Life expectancy of greater than 3 months * Patients must have measurable disease, defined as at least one lesion that can be accurately measured in at least one dimension (longest diameter to be recorded for non-nodal lesions and short axis for nodal lesions) as \>= 20 mm (\>= 2 cm) with conventional techniques or as \>= 10 mm (\>= 1 cm) with spiral computed tomography (CT) scan, magnetic resonance imaging (MRI), or calipers by clinical exam * Leukocytes \>= 3,000/mcL * Absolute neutrophil count \>= 1,500/mcL * Platelets \>= 100,000/mcL * Total bilirubin within normal institutional limits * Aspartate aminotransferase (AST) (serum glutamic oxaloacetic transaminase \[SGOT\])/alanine aminotransferase (ALT) (serum glutamate pyruvate transaminase \[SGPT\]) =\< 2.5 x institutional upper limit of normal * Creatinine within normal institutional limits OR creatinine clearance \>= 60 mL/min/1.73 m\^2 for patients with creatinine levels above institutional normal * The effects of M6620 (VX-970, berzosertib) on the developing human fetus are unknown; for this reason and because DNA-damage response (DDR) inhibitors as well as other therapeutic agents used in this trial may have teratogenic potential, women of child-bearing potential and men must agree to use adequate contraception (hormonal or barrier method of birth control; abstinence) prior to study entry and for the duration of study participation; should a woman become pregnant or suspect she is pregnant while she or her partner is participating in this study, she should inform her treating physician immediately; men treated or enrolled on this protocol must also agree to use adequate contraception prior to the study, for the duration of study participation, and for 6 months after completion of M6620 (VX-970, berzosertib) administration * Ability to understand and the willingness to sign a written informed consent document * Women of childbearing potential who are sexually active should be willing and able to use medically acceptable forms of contraception throughout the treatment phase of the trial and for up to 6 months following the last administration of study treatment; men who are sexually active must be willing and able to use medically acceptable forms of contraception throughout the treatment phase of the trial and for 6 months after completion of M6620 (VX-970, berzosertib) administration

Exclusion criteria

* Patients with nasopharyngeal carcinoma, skin squamous cell carcinoma (SCC), and salivary gland carcinomas are not eligible * Patients who are receiving adjuvant chemoradiation after surgical resection of the primary site of disease * Patients who have had chemotherapy or radiotherapy within 4 weeks (6 weeks for nitrosoureas or mitomycin C) prior to entering the study or those who have not recovered from adverse events due to agents administered more than 4 weeks earlier * Patients who are receiving any other investigational agents * Patients on tacrolimus or any other immunosuppressants with significant interaction with cisplatin * Patient who requires live vaccine administration * Patients with known brain metastases should be excluded from this clinical trial because of their poor prognosis and because they often develop progressive neurologic dysfunction that would confound the evaluation of neurologic and other adverse events * History of allergic reactions attributed to compounds of similar chemical or biologic composition to M6620 (VX-970, berzosertib) or cisplatin * Prior systemic chemotherapy for the current cancer (prior chemotherapy for a different cancer is allowed) * Prior receipt of radiotherapy that would result in overlap of the new and old radiation therapy fields * Uncontrolled intercurrent illness including, but not limited to: * Ongoing or active infection requiring intravenous antibiotics at the time of treatment initiation * Symptomatic congestive heart failure (requiring hospital stay within the last 6 months) * Myocardial infarction within the last 6 months * Unstable angina pectoris, cardiac arrhythmia * Psychiatric illness/social situations that would limit compliance with study requirements * Pregnant women are excluded from this study because M6620 (VX-970, berzosertib) as a DNA-damage response (DDR) inhibitor may have the potential for teratogenic or abortifacient effects; because there is an unknown but potential risk for adverse events in nursing infants secondary to treatment of the mother with M6620 (VX-970, berzosertib), breastfeeding should be discontinued if the mother is treated with M6620 (VX-970, berzosertib); these potential risks may also apply to other agents used in this study * Human immunodeficiency virus (HIV)-positive patients with well-controlled disease, as determined by CD4 count and viral load, who are on antiretroviral therapy that does not contain a strong inducer or inhibitor of CYP3A4 are allowed on trial; HIV-positive patients on combination antiretroviral therapy with strong inducers or inhibitors of CYP3A4 are ineligible because of the potential for pharmacokinetic interactions; patients with poorly controlled HIV are not eligible due to the increased risk of lethal infections when treated with marrow-suppressive therapy * Definitive clinical or radiographic evidence of distant metastasis or adenopathy below the clavicles * M6620 (VX-970, berzosertib) is primarily metabolized by CYP3A4; therefore, concomitant administration with strong inhibitors or inducers of CYP3A4 should be avoided; because the lists of these agents are constantly changing, it is important to regularly consult a frequently-updated medical reference for a list of drugs to avoid or minimize use of; as part of the enrollment/informed consent procedures, the patient will be counseled on the risk of interactions with other agents, and what to do if new medications need to be prescribed or if the patient is considering a new over-the-counter medicine or herbal product

Design outcomes

Primary

MeasureTime frameDescription
Number of Participants Experiencing Grade 3, 4, and 5 Adverse EventsUp to 6.5 yearsAccording to the Cancer Therapy Evaluation Program National Cancer Institute Common Terminology Criteria for Adverse Events version 5.0 (NCI CTCAE v. 5). The highest grade experienced by the participant will be reported.
Number of Participants Experiencing a Dose Limiting ToxicitiesUp to 3 weeks after completion of radiation therapyDose limiting toxicities are protocol-specific adverse events considered at least possibly related to the study intervention. Graded according to NCI CTCAE v5.
Establish the Recommended Phase 2 Dose (RP2D)Up to 7 weeksDefined as the highest doses of cisplatin and berzosertib safely combined with radiation.

Secondary

MeasureTime frameDescription
Number of Participants Experiencing a Metabolic ResponseAt week 12 after completing interventionAssessed by fluorodeoxyglucose-positron emission tomography (FDG PET) and measured by Response Evaluation Criteria in Solid Tumors (RECIST) v1.1. Metabolic response are participants demonstrating a complete response (disappearance of all target and non-target lesions) or a partial response (at least a 30% decrease in the sum of diameters of target lesions from baseline).
Pharmacokinetic Characteristics of BerzosertibUp to Day 5The maximum concentration ratio between Day -7 collections to Day 2 collections. Collection time points are baseline, 30 and 55 minutes after the start of M6620 infusion, 5, 15, 30 minutes, 1, 2, 4, 23 (Day 3), 48 (Day 4), and 72 hours (Day 5) after the end of M6620 infusion given on Day 2.
Expression of Tissue-based Biomarkers as Markers of Deoxyribonucleic Acid Damage and Predictors of Clinical OutcomeUp to 6.5 yearsKaplan-Meier curves for Progression Free Survival (PFS), defined as time to disease progression, and Overall Survival (OS), defined as time until death or off study, were used to evaluate if the gene expression profiles of ERCC1 and XRCC1, and TP53 correlated to these outcomes.
Potential Drug-drug InteractionUp to Day 5The maximum concentration of M6620 in the blood when aprepitant is also given.
Number of Participants Experiencing a ResponseUp to 6.5 yearsEvaluated by Response Evaluation Criteria in Solid Tumors 1.1. Response is defined as complete response (disappearance of all target and non-target lesions) or partial response (at least a 30% decrease in the sum of diameters of target lesions from baseline).

Countries

United States

Participant flow

Participants by arm

ArmCount
Dose Level 1
Patients received M6620 (VX-970, berzosertib) 120 mg/m2 by infusion in their arm weekly, cisplatin 40 mg/m2 IV weekly starting a week after M6620, and radiation therapy 70 Gy daily Monday-Friday also starting a week after M6620.
11
Dose Level 2
Patients received M6620 (VX-970, berzosertib) 160 mg/m2 by infusion in their arm weekly, cisplatin 40 mg/m2 IV weekly starting a week after M6620, and radiation therapy 70 Gy daily Monday-Friday also starting a week after M6620.
6
Dose Level 3
Patients received M6620 (VX-970, berzosertib) 200 mg/m2 by infusion in their arm weekly, cisplatin 40 mg/m2 IV weekly starting a week after M6620, and radiation therapy 70 Gy daily Monday-Friday also starting a week after M6620.
11
Dose Level 3 Expansion
Patients received M6620 (VX-970, berzosertib) 200 mg/m2 by infusion in their arm weekly, cisplatin 40 mg/m2 IV weekly starting a week after M6620, and radiation therapy 70 Gy daily Monday-Friday also starting a week after M6620.
15
Total43

Baseline characteristics

CharacteristicDose Level 1TotalDose Level 3 ExpansionDose Level 3Dose Level 2
Age, Continuous69 Years61 Years59 Years59 Years65.5 Years
Ethnicity (NIH/OMB)
Hispanic or Latino
0 Participants1 Participants0 Participants1 Participants0 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
11 Participants41 Participants14 Participants10 Participants6 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants1 Participants1 Participants0 Participants0 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Asian
0 Participants1 Participants1 Participants0 Participants0 Participants
Race (NIH/OMB)
Black or African American
3 Participants5 Participants2 Participants0 Participants0 Participants
Race (NIH/OMB)
More than one race
0 Participants0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants2 Participants1 Participants1 Participants0 Participants
Race (NIH/OMB)
White
8 Participants35 Participants11 Participants10 Participants6 Participants
Region of Enrollment
United States
11 participants43 participants15 participants11 participants6 participants
Sex: Female, Male
Female
5 Participants17 Participants5 Participants5 Participants2 Participants
Sex: Female, Male
Male
6 Participants26 Participants10 Participants6 Participants4 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
EG003
affected / at risk
deaths
Total, all-cause mortality
2 / 111 / 62 / 112 / 15
other
Total, other adverse events
11 / 116 / 611 / 1115 / 15
serious
Total, serious adverse events
5 / 114 / 67 / 115 / 15

Outcome results

Primary

Establish the Recommended Phase 2 Dose (RP2D)

Defined as the highest doses of cisplatin and berzosertib safely combined with radiation.

Time frame: Up to 7 weeks

ArmMeasureValue (NUMBER)
Dose Level 1Establish the Recommended Phase 2 Dose (RP2D)200 mg/m^2
Primary

Number of Participants Experiencing a Dose Limiting Toxicities

Dose limiting toxicities are protocol-specific adverse events considered at least possibly related to the study intervention. Graded according to NCI CTCAE v5.

Time frame: Up to 3 weeks after completion of radiation therapy

Population: Dose limiting toxicities (DLTs) are only evaluated in participants during dose escalation (i.e. Dose Levels 1, 2, and 3). Participants not completing the treatment for reasons other than an adverse event (i.e. withdrawal or non-compliance with treatment) are excluded from the analysis. DLTs were not evaluated for participants enrolled in Dose Expansion.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Dose Level 1Number of Participants Experiencing a Dose Limiting ToxicitiesExperiencing a DLT2 Participants
Dose Level 1Number of Participants Experiencing a Dose Limiting ToxicitiesDid not experience a DLT7 Participants
Dose Level 2Number of Participants Experiencing a Dose Limiting ToxicitiesExperiencing a DLT1 Participants
Dose Level 2Number of Participants Experiencing a Dose Limiting ToxicitiesDid not experience a DLT5 Participants
Dose Level 3Number of Participants Experiencing a Dose Limiting ToxicitiesExperiencing a DLT2 Participants
Dose Level 3Number of Participants Experiencing a Dose Limiting ToxicitiesDid not experience a DLT7 Participants
Primary

Number of Participants Experiencing Grade 3, 4, and 5 Adverse Events

According to the Cancer Therapy Evaluation Program National Cancer Institute Common Terminology Criteria for Adverse Events version 5.0 (NCI CTCAE v. 5). The highest grade experienced by the participant will be reported.

Time frame: Up to 6.5 years

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Dose Level 1Number of Participants Experiencing Grade 3, 4, and 5 Adverse EventsGrade 37 Participants
Dose Level 1Number of Participants Experiencing Grade 3, 4, and 5 Adverse EventsGrade 43 Participants
Dose Level 1Number of Participants Experiencing Grade 3, 4, and 5 Adverse EventsGrades 1-21 Participants
Dose Level 1Number of Participants Experiencing Grade 3, 4, and 5 Adverse EventsGrade 50 Participants
Dose Level 2Number of Participants Experiencing Grade 3, 4, and 5 Adverse EventsGrade 50 Participants
Dose Level 2Number of Participants Experiencing Grade 3, 4, and 5 Adverse EventsGrade 33 Participants
Dose Level 2Number of Participants Experiencing Grade 3, 4, and 5 Adverse EventsGrades 1-20 Participants
Dose Level 2Number of Participants Experiencing Grade 3, 4, and 5 Adverse EventsGrade 43 Participants
Dose Level 3Number of Participants Experiencing Grade 3, 4, and 5 Adverse EventsGrade 51 Participants
Dose Level 3Number of Participants Experiencing Grade 3, 4, and 5 Adverse EventsGrade 35 Participants
Dose Level 3Number of Participants Experiencing Grade 3, 4, and 5 Adverse EventsGrade 44 Participants
Dose Level 3Number of Participants Experiencing Grade 3, 4, and 5 Adverse EventsGrades 1-21 Participants
Dose Level 3 ExpansionNumber of Participants Experiencing Grade 3, 4, and 5 Adverse EventsGrades 1-20 Participants
Dose Level 3 ExpansionNumber of Participants Experiencing Grade 3, 4, and 5 Adverse EventsGrade 43 Participants
Dose Level 3 ExpansionNumber of Participants Experiencing Grade 3, 4, and 5 Adverse EventsGrade 51 Participants
Dose Level 3 ExpansionNumber of Participants Experiencing Grade 3, 4, and 5 Adverse EventsGrade 311 Participants
Secondary

Expression of Tissue-based Biomarkers as Markers of Deoxyribonucleic Acid Damage and Predictors of Clinical Outcome

Kaplan-Meier curves for Progression Free Survival (PFS), defined as time to disease progression, and Overall Survival (OS), defined as time until death or off study, were used to evaluate if the gene expression profiles of ERCC1 and XRCC1, and TP53 correlated to these outcomes.

Time frame: Up to 6.5 years

ArmMeasureCategoryValue (COUNT_OF_PARTICIPANTS)
Dose Level 1Expression of Tissue-based Biomarkers as Markers of Deoxyribonucleic Acid Damage and Predictors of Clinical OutcomeSelected Biomarkers did not correlate to Outcome8 Participants
Dose Level 1Expression of Tissue-based Biomarkers as Markers of Deoxyribonucleic Acid Damage and Predictors of Clinical OutcomeSelected Biomarkers correlated to Outcome0 Participants
Dose Level 2Expression of Tissue-based Biomarkers as Markers of Deoxyribonucleic Acid Damage and Predictors of Clinical OutcomeSelected Biomarkers did not correlate to Outcome5 Participants
Dose Level 2Expression of Tissue-based Biomarkers as Markers of Deoxyribonucleic Acid Damage and Predictors of Clinical OutcomeSelected Biomarkers correlated to Outcome0 Participants
Dose Level 3Expression of Tissue-based Biomarkers as Markers of Deoxyribonucleic Acid Damage and Predictors of Clinical OutcomeSelected Biomarkers correlated to Outcome0 Participants
Dose Level 3Expression of Tissue-based Biomarkers as Markers of Deoxyribonucleic Acid Damage and Predictors of Clinical OutcomeSelected Biomarkers did not correlate to Outcome9 Participants
Dose Level 3 ExpansionExpression of Tissue-based Biomarkers as Markers of Deoxyribonucleic Acid Damage and Predictors of Clinical OutcomeSelected Biomarkers correlated to Outcome0 Participants
Dose Level 3 ExpansionExpression of Tissue-based Biomarkers as Markers of Deoxyribonucleic Acid Damage and Predictors of Clinical OutcomeSelected Biomarkers did not correlate to Outcome9 Participants
Secondary

Number of Participants Experiencing a Metabolic Response

Assessed by fluorodeoxyglucose-positron emission tomography (FDG PET) and measured by Response Evaluation Criteria in Solid Tumors (RECIST) v1.1. Metabolic response are participants demonstrating a complete response (disappearance of all target and non-target lesions) or a partial response (at least a 30% decrease in the sum of diameters of target lesions from baseline).

Time frame: At week 12 after completing intervention

Population: Due to funding issues, response was solely assessed by CT scans instead of FDG PET. Metabolic data was therefore not collected.

Secondary

Number of Participants Experiencing a Response

Evaluated by Response Evaluation Criteria in Solid Tumors 1.1. Response is defined as complete response (disappearance of all target and non-target lesions) or partial response (at least a 30% decrease in the sum of diameters of target lesions from baseline).

Time frame: Up to 6.5 years

ArmMeasureCategoryValue (COUNT_OF_PARTICIPANTS)
Dose Level 1Number of Participants Experiencing a ResponseNot Performed2 Participants
Dose Level 1Number of Participants Experiencing a ResponseNo Response0 Participants
Dose Level 1Number of Participants Experiencing a ResponseResponse9 Participants
Dose Level 2Number of Participants Experiencing a ResponseNo Response1 Participants
Dose Level 2Number of Participants Experiencing a ResponseResponse2 Participants
Dose Level 2Number of Participants Experiencing a ResponseNot Performed3 Participants
Dose Level 3Number of Participants Experiencing a ResponseResponse7 Participants
Dose Level 3Number of Participants Experiencing a ResponseNo Response1 Participants
Dose Level 3Number of Participants Experiencing a ResponseNot Performed3 Participants
Dose Level 3 ExpansionNumber of Participants Experiencing a ResponseNo Response3 Participants
Dose Level 3 ExpansionNumber of Participants Experiencing a ResponseNot Performed5 Participants
Dose Level 3 ExpansionNumber of Participants Experiencing a ResponseResponse7 Participants
Secondary

Pharmacokinetic Characteristics of Berzosertib

The maximum concentration ratio between Day -7 collections to Day 2 collections. Collection time points are baseline, 30 and 55 minutes after the start of M6620 infusion, 5, 15, 30 minutes, 1, 2, 4, 23 (Day 3), 48 (Day 4), and 72 hours (Day 5) after the end of M6620 infusion given on Day 2.

Time frame: Up to Day 5

Population: Based on samples collected. PK was only collected in the dose escalation phase. PK was not collected for participants in the dose expansion arm.

ArmMeasureValue (MEAN)Dispersion
Dose Level 1Pharmacokinetic Characteristics of Berzosertib0.75 ratioStandard Deviation 1.7
Dose Level 3Pharmacokinetic Characteristics of Berzosertib1.02 ratioStandard Deviation 1.5
Secondary

Potential Drug-drug Interaction

The maximum concentration of M6620 in the blood when aprepitant is also given.

Time frame: Up to Day 5

Population: Based on samples collected. PK was only collected in the dose escalation phase. PK was not collected for participants in the dose expansion arm.

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
Dose Level 1Potential Drug-drug Interaction732 ug/LStandard Deviation 2.5
Dose Level 3Potential Drug-drug Interaction1149 ug/LStandard Deviation 1.9

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026