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NCT02808650

Prexasertib in Treating Pediatric Patients With Recurrent or Refractory Solid Tumors

Completed Phase 1 Results posted Last updated 20 December 2023
What this trial tests

Phase 1 trial testing Laboratory Biomarker Analysis in Childhood Solid Neoplasm in 30 participants. Completed in 31 March 2021.

Timeline
27 February 2017
Primary endpoint
31 December 2019
31 March 2021

Quick facts

Lead sponsorChildren's Oncology Group
PhasePhase 1
StatusCompleted
Study typeINTERVENTIONAL
Allocationna
Designsingle group
Maskingnone
Primary purposetreatment
Enrollment30
Start date27 February 2017
Primary completion31 December 2019
Estimated completion31 March 2021
Sites21 locations across United States

Drugs / interventions tested

Conditions studied

Sponsor

Children's Oncology Group — full company profile →

Who can join

Adults 12 Months to 21, any sex, with Childhood Solid Neoplasm or Recurrent Malignant Solid Neoplasm. Patients with the condition only — healthy volunteers not accepted.

Results — posted to ClinicalTrials.gov

Per-arm endpoint measurements with 95% confidence intervals where reported. Source: trial results section.

Maximum Tolerated Dose (MTD) of Prexasertib Primary · Up to 28 days

Maximum tolerated dose or recommended phase 2 dose of prexasertib assessed by national Cancer Institute (NCI) CTCAE version 4.0 defined as the maximum dose at which fewer that one-third of patients experience a dose limiting toxicity in cycle 1

GroupValue95% CI
Treatment (Prexasertib)150
Number of Patients With Dose Limiting Toxicity (DLT) to Prexasertib Primary · Up to 28 days

Number of patients with DLT to Prexasertib by dose level and study part.

GroupValue95% CI
Part A Dose Level 1: 80 mg/m^20
Part A Dose Level 2: 100 mg/m^20
Part A Dose Level 3: 125 mg/m^20
Part A Dose Level 4: 150 mg/m^20
Part PK Dose Level 4: 150 mg/m^20
Area Under the Concentration Time Curve for Prexasertib Primary · Up to 8 hours

Median (min, max) area under the concentration by time curve for prexasertib assessed at 1, 1.5, 2, 4, and 8 hours on day 1 post infusion by dose level and study part

GroupValue95% CI
Part A Dose Level 1: 80 mg/m^21718.71215.2 – 2168.6
Part A Dose Level 2: 100 mg/m^22285.51658.4 – 3529.0
Part A Dose Level 3: 125 mg/m^22534.42080.0 – 3535.6
Part A Dose Level 4: 150 mg/m^24206.62164.9 – 5357.9
Part PK Dose Level 4: 150 mg/m^23097.72443.2 – 4282.5
Antitumor Activity of Prexasertib Secondary · Up to 2 years

Number of response evaluable patients with response (CR/PR) using the RECIST guideline version 1.1 including CR: disappearance of all target and non-target lesions; PR: at least 30% decrease in the sum of the diameters of target lesions by dose level and study part

GroupValue95% CI
Part A Dose Level 1: 80 mg/m^20
Part A Dose Level 2: 100 mg/m^20
Part A Dose Level 3: 125 mg/m^20
Part A Dose Level 4: 150 mg/m^20
Part PK Dose Level 4: 150 mg/m^20
CHK1/2 Expression Status Secondary · Up to 2 years

Number of patients with CHK1/2 expression by percent of tumor cells with CHK1/2 expression defined by quartiles.

0% Negative
GroupValue95% CI
Part A Dose Level 1: 80 mg/m^22
Part A Dose Level 2: 100 mg/m^20
Part A Dose Level 3: 125 mg/m^21
Part A Dose Level 4: 150 mg/m^20
Part PK Dose Level 4: 150 mg/m^21
1-25% cells positive
GroupValue95% CI
Part A Dose Level 1: 80 mg/m^20
Part A Dose Level 2: 100 mg/m^20
Part A Dose Level 3: 125 mg/m^20
Part A Dose Level 4: 150 mg/m^21
Part PK Dose Level 4: 150 mg/m^21
26-50% cells positive
GroupValue95% CI
Part A Dose Level 1: 80 mg/m^21
Part A Dose Level 2: 100 mg/m^20
Part A Dose Level 3: 125 mg/m^21
Part A Dose Level 4: 150 mg/m^20
Part PK Dose Level 4: 150 mg/m^20
51-75% cells positive
GroupValue95% CI
Part A Dose Level 1: 80 mg/m^22
Part A Dose Level 2: 100 mg/m^20
Part A Dose Level 3: 125 mg/m^21
Part A Dose Level 4: 150 mg/m^21
Part PK Dose Level 4: 150 mg/m^22
76-100% cells positive
GroupValue95% CI
Part A Dose Level 1: 80 mg/m^21
Part A Dose Level 2: 100 mg/m^21
Part A Dose Level 3: 125 mg/m^20
Part A Dose Level 4: 150 mg/m^23
Part PK Dose Level 4: 150 mg/m^20
TP53 Deletion and/or Mutation in Tumor Tissue as a Potential Biomarker of Chk1 Inhibition Secondary · Up to 2 years

Number of patients with TP53 deletion and/or mutation of Trp53 by percent of tumor cells with TP53 deletion and/or mutation of Trp53 defined by quartiles.

0% Negative
GroupValue95% CI
Part A Dose Level 1: 80 mg/m^21
Part A Dose Level 2: 100 mg/m^20
Part A Dose Level 3: 125 mg/m^21
Part A Dose Level 4: 150 mg/m^20
Part PK Dose Level 4: 150 mg/m^20
1-25% cells positive
GroupValue95% CI
Part A Dose Level 1: 80 mg/m^20
Part A Dose Level 2: 100 mg/m^20
Part A Dose Level 3: 125 mg/m^20
Part A Dose Level 4: 150 mg/m^22
Part PK Dose Level 4: 150 mg/m^21
26-50% cells positive
GroupValue95% CI
Part A Dose Level 1: 80 mg/m^21
Part A Dose Level 2: 100 mg/m^21
Part A Dose Level 3: 125 mg/m^20
Part A Dose Level 4: 150 mg/m^20
Part PK Dose Level 4: 150 mg/m^20
51-75% cells positive
GroupValue95% CI
Part A Dose Level 1: 80 mg/m^22
Part A Dose Level 2: 100 mg/m^20
Part A Dose Level 3: 125 mg/m^21
Part A Dose Level 4: 150 mg/m^21
Part PK Dose Level 4: 150 mg/m^20
76-100% cells positive
GroupValue95% CI
Part A Dose Level 1: 80 mg/m^22
Part A Dose Level 2: 100 mg/m^20
Part A Dose Level 3: 125 mg/m^21
Part A Dose Level 4: 150 mg/m^22
Part PK Dose Level 4: 150 mg/m^23

Adverse events — posted to ClinicalTrials.gov

Time frame: Up to 2 years. Reporting threshold: 0%. Adverse-event reports describe events observed during the trial — not all are caused by the drug.

Part A Dose Level 1: 80 mg/m^2
Serious: 3/6 (50%)
Deaths: 1/6
Part A Dose Level 2: 100 mg/m^2
Serious: 3/6 (50%)
Deaths: 1/6
Part A Dose Level 3: 125 mg/m^2
Serious: 3/6 (50%)
Deaths: 0/6
Part A Dose Level 4: 150 mg/m^2
Serious: 2/6 (33%)
Deaths: 0/6
Part PK Dose Level 4: 150 mg/m^2
Serious: 4/6 (67%)
Deaths: 1/6

Serious adverse events (30 terms)

ReactionSystemPart A Dose Level 1: 80 mg…Part A Dose Level 2: 100 m…Part A Dose Level 3: 125 m…Part A Dose Level 4: 150 m…Part PK Dose Level 4: 150 …
Abdominal painGastrointestinal disorders
Acute kidney injuryRenal and urinary disorders
ApneaRespiratory, thoracic and mediastinal disorders
Back painMusculoskeletal and connective tissue disorders
Buttock painMusculoskeletal and connective tissue disorders
Catheter related infectionInfections and infestations
ChillsGeneral disorders
ConfusionPsychiatric disorders
ConstipationGastrointestinal disorders
DeliriumPsychiatric disorders
Depressed level of consciousnessNervous system disorders
Febrile neutropeniaBlood and lymphatic system disorders
FeverGeneral disorders
Gait disturbanceGeneral disorders
HydrocephalusNervous system disorders
HypotensionVascular disorders
HypoxiaRespiratory, thoracic and mediastinal disorders
Infusion related reactionGeneral disorders
Lung infectionInfections and infestations
NauseaGastrointestinal disorders
Neutrophil count decreasedInvestigations
Pain in extremityMusculoskeletal and connective tissue disorders
Pericardial effusionCardiac disorders
PneumothoraxRespiratory, thoracic and mediastinal disorders
Respiratory failureRespiratory, thoracic and mediastinal disorders
Other adverse events (227 terms — click to expand)

ReactionSystemPart A Dose Level 1: 80 mg…Part A Dose Level 2: 100 m…Part A Dose Level 3: 125 m…Part A Dose Level 4: 150 m…Part PK Dose Level 4: 150 …
AnemiaBlood and lymphatic system disorders
Neutrophil count decreasedInvestigations
Platelet count decreasedInvestigations
White blood cell decreasedInvestigations
Electrocardiogram QT corrected interval prolongedInvestigations
FatigueGeneral disorders
VomitingGastrointestinal disorders
AnorexiaMetabolism and nutrition disorders
Back painMusculoskeletal and connective tissue disorders
DysarthriaNervous system disorders
HeadacheNervous system disorders
HypertensionVascular disorders
HypokalemiaMetabolism and nutrition disorders
HypophosphatemiaMetabolism and nutrition disorders
InsomniaPsychiatric disorders
Lymphocyte count decreasedInvestigations
Pain in extremityMusculoskeletal and connective tissue disorders
Sinus tachycardiaCardiac disorders
Alanine aminotransferase increasedInvestigations
AnxietyPsychiatric disorders
Aspartate aminotransferase increasedInvestigations
ConstipationGastrointestinal disorders
CoughRespiratory, thoracic and mediastinal disorders
DepressionPsychiatric disorders
DyspneaRespiratory, thoracic and mediastinal disorders
FeverGeneral disorders
HyperglycemiaMetabolism and nutrition disorders
HypermagnesemiaMetabolism and nutrition disorders
HypoalbuminemiaMetabolism and nutrition disorders
HypocalcemiaMetabolism and nutrition disorders
NauseaGastrointestinal disorders
ParesthesiaNervous system disorders
Urinary retentionRenal and urinary disorders
Abducens nerve disorderNervous system disorders
Activated partial thromboplastin time prolongedInvestigations
AgitationPsychiatric disorders
AlopeciaSkin and subcutaneous tissue disorders
AtaxiaNervous system disorders
Blood bilirubin increasedInvestigations
BruisingInjury, poisoning and procedural complications

Most-reported serious reactions: Abdominal pain, Acute kidney injury, Apnea, Back pain, Buttock pain, Catheter related infection, Chills, Confusion.

Data from ClinicalTrials.gov NCT02808650 adverse events section.

Sponsor's own description

This phase I trial studies the side effects and best dose of prexasertib in treating pediatric patients with solid tumors that have come back after a period of time during which the tumor could not be detected or does not respond to treatment. Checkpoint kinase 1 inhibitor LY2606368 may stop the growth of tumor cells by blocking some of the enzymes needed for cell growth.

Publications & conference data

8 peer-reviewed publications reference this trial (live from Europe PMC):

  1. ATR/CHK1 inhibitors and cancer therapy.
    Qiu Z, Oleinick NL, Zhang J. · · 2018 · cited 282× · PMID 29054375 · DOI 10.1016/j.radonc.2017.09.043
  2. DNA Repair Pathways in Cancer Therapy and Resistance.
    Li LY, Guan YD, Chen XS, Yang JM, et al · · 2020 · cited 254× · PMID 33628188 · DOI 10.3389/fphar.2020.629266
  3. Targeting the DNA Damage Response in OSCC with TP53 Mutations.
    Lindemann A, Takahashi H, Patel AA, Osman AA, et al · · 2018 · cited 117× · PMID 29489434 · DOI 10.1177/0022034518759068
  4. Development of Chemotherapy with Cell-Cycle Inhibitors for Adult and Pediatric Cancer Therapy.
    Mills CC, Kolb EA, Sampson VB. · · 2018 · cited 110× · PMID 29311160 · DOI 10.1158/0008-5472.can-17-2782
  5. Exploiting DNA repair defects in colorectal cancer.
    Reilly NM, Novara L, Di Nicolantonio F, Bardelli A. · · 2019 · cited 96× · PMID 30714316 · DOI 10.1002/1878-0261.12467
  6. Broad Spectrum Activity of the Checkpoint Kinase 1 Inhibitor Prexasertib as a Single Agent or Chemopotentiator Across a Range of Preclinical Pediatric Tumor Models.
    Lowery CD, Dowless M, Renschler M, Blosser W, et al · · 2019 · cited 65× · PMID 30563935 · DOI 10.1158/1078-0432.ccr-18-2728
  7. DNA Damage and Its Role in Cancer Therapeutics.
    Moon J, Kitty I, Renata K, Qin S, et al · · 2023 · cited 47× · PMID 36902170 · DOI 10.3390/ijms24054741
  8. Small-molecule screen reveals synergy of cell cycle checkpoint kinase inhibitors with DNA-damaging chemotherapies in medulloblastoma.
    Endersby R, Whitehouse J, Pribnow A, Kuchibhotla M, et al · · 2021 · cited 40× · PMID 33472956 · DOI 10.1126/scitranslmed.aba7401

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Trials testing the same drug.

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Trials by the same sponsor.

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