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FLT PET Imaging for Cervical Cancer

'F-18 Fluorothymidine ([18F]FLT) PET Imaging for Early Evaluation of Response to Chemoradiation Therapy in Patients With Cervical Cancer

Status
Terminated
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT01075412
Enrollment
6
Registered
2010-02-25
Start date
2009-09-30
Completion date
2016-04-11
Last updated
2017-12-02

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

Conditions

Uterine Cervical Neoplasms

Keywords

Positron-Emission Tomography, Radiotherapy, Intensity-Modulated

Brief summary

Our primary hypothesis is that \[18F\]FLT PET can identify active bone marrow in addition to metabolically active tumor. This trial will use FLT-PET imaging to define areas of active bone marrow in the pelvis. The radiation plan is then designed to spare that area, in hopes of keeping the bone marrow active during therapy. Bone marrow and tumor activity will be monitored using a sequence of FLT PET scans during the course of chemotherapy and radiation therapy.

Detailed description

Subjects will undergo a total of up to 5 FLT PET scans. Subjects are randomized between two groups to reduce radiation exposure from the FLT PET scans. If bone marrow activity is not identified in one scan, further scans are cancelled until the 1-month follow up scan. This is not a randomization to compare therapeutic efficacy between two study arms. Data will be pooled for analysis as pre-specified in the study's statistical plan. Group 1 has FLT PET scans pretreatment, after 5 radiation treatments, after 10 radiation treatments, after 15 radiation treatments, and then 1 month after completing radiation therapy. Group 2 has FLT PET scans pretreatment, after 5 radiation treatments, after 10 radiation treatments, after 20 radiation treatments, and then 1 month after completing radiation therapy.

Interventions

DRUG[F18]Fluorothymidine

FLT PET scan 5 mCi (+/- 10%)

Sponsors

Holden Comprehensive Cancer Center
CollaboratorOTHER
University of Iowa
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

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

Inclusion criteria

* Ability to understand and willingness to sign a written informed consent document. * Histologically confirmed stage IB2, IIA, IIB, IIIB, and IVA squamous cell carcinoma of the cervix. * Scheduled to receive chemo-radiation for oncologic treatment. * Karnofsky of at least 60 at time of screening * Life expectancy of at least 6 months. * Leukocytes at least 3,000/microL * absolute neutrophil count at least 1,500/microL * platelets at least 100,000/microL * total bilirubin at maximum 1.0 mg/dL (UIHC limit of normal) * either ALT or AST less than 2.5 times the upper limit of normal * creatinine less than 1.5 times the upper limit of normal * non-pregnant, non-nursing, willing to use contraception

Exclusion criteria

* oncology research protocol requiring full pelvic radiation (i.e., 4-field box technique) or experimental chemotherapy * uncontrolled intercurrent illness including, but not limited to, ongoing or active infection, symptomatic congestive heart failure, unstable angina pectoris, cardiac arrhythmia, or psychiatric illness/social situations that would limit compliance with the study requirements. * subjects taking nucleoside analog medications such as those used as antiretroviral agents. * patients who have undergone hysterectomy or will have a hysterectomy as part of their cancer therapy.

Design outcomes

Primary

MeasureTime frameDescription
Percent Difference From Baseline IMRT Plan (%)Baseline (pre-treatment)The difference in volume of bone marrow receiving radiation using a bone-marrow-sparing radiation plan compared to a standard radiation plan (IMRT), expressed as a percentage. Both plans are patient-specific. Bone-marrow is identified using the baseline FLT PET/CT obtained pre-imaging. Active bone marrow is considered to have an uptake value (SUV) of 2, 3, or 4. The standard IMRT plan was created using the criteria of the National Cancer Institute's Radiation Therapy Oncology Group study RTOG-0418. Radiation dose bins evaluated are 5 Gray, 10 Gray, 20 Gray, and 30 Gray. The change in dose to tumor is also provided. A negative value indicates that more bone marrow or tissue was spared using the bone-marrow sparing plan.

Secondary

MeasureTime frameDescription
Chemotherapy Compliancepost-treatmentThe number of participants who missed at least one prescribed chemotherapy administration due to low blood counts.
Number of Participants With Standardized Toxicity Severity Grades for White Blood Cell Countsbaseline, weekly during radiation treatment for up to 5 weeks, and 30 days post treatmentWhite blood cell counts measurements expressed in standardized toxicity severity grades (Common Terminology Criteria for Adverse Events, v4.03) measured weekly during combined chemotherapy and radiation therapy treatment and then once at 30 day follow-up and at 1 year follow-up
Number of Participants With Standardized Toxicity Severity Grades for Decreased Platelet Counts.baseline, weekly during radiation treatment for up to 5 weeks, and 30 days post treatmentPlatelet cell counts measurements expressed in standardized toxicity severity grades (Common Terminology Criteria for Adverse Events, v4.03) measured once weekly during combined chemotherapy and radiation therapy, then once at 30 day follow-up, and once at 1 year follow-up
Number of Participants With Standardized Toxicity Severity Grades for Decreased Absolute Neutrophil Counts (ANCs)baseline, weekly during radiation treatment for up to 5 weeks, and 30 days post treatmentAbsolute neutrophil counts (ANCs) measurements expressed in standardized toxicity severity grades (Common Terminology Criteria for Adverse Events, v4.03) measured once weekly during combined chemotherapy and radiation therapy, then once at 30 day follow-up, and once at 1 year follow-up.
Number of Participants With Standardized Toxicity Severity Grades for Decreased Lymphocyte Counts.baseline, weekly during radiation treatment for up to 5 weeks, and 30 days post treatmentLymphocyte counts measurements expressed in standardized toxicity severity grades (Common Terminology Criteria for Adverse Events, v4.03) measured once weekly during combined chemotherapy and radiation therapy, then once at 30 day follow-up, and once at 1 year follow-up

Countries

United States

Participant flow

Participants by arm

ArmCount
Group 1
Receives fourth \[F18\]Fluorothymidine (FLT) PET scan after 15 fractions of radiation therapy. \[F18\]Fluorothymidine: FLT PET scan 5 mCi (+/- 10%)
4
Group 2
Receives fourth \[F18\]Fluorothymidine (FLT) PET scan after 20 fractions of radiation therapy. \[F18\]Fluorothymidine: FLT PET scan 5 mCi (+/- 10%)
2
Total6

Withdrawals & dropouts

PeriodReasonFG000FG001
Overall StudyWithdrawal by Subject01

Baseline characteristics

CharacteristicGroup 1Group 2Total
Age, Categorical
<=18 years
0 Participants0 Participants0 Participants
Age, Categorical
>=65 years
1 Participants0 Participants1 Participants
Age, Categorical
Between 18 and 65 years
3 Participants2 Participants5 Participants
Region of Enrollment
United States
4 participants2 participants6 participants
Sex: Female, Male
Female
4 Participants2 Participants6 Participants
Sex: Female, Male
Male
0 Participants0 Participants0 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
0 / 40 / 2
other
Total, other adverse events
0 / 40 / 2
serious
Total, serious adverse events
0 / 40 / 2

Outcome results

Primary

Percent Difference From Baseline IMRT Plan (%)

The difference in volume of bone marrow receiving radiation using a bone-marrow-sparing radiation plan compared to a standard radiation plan (IMRT), expressed as a percentage. Both plans are patient-specific. Bone-marrow is identified using the baseline FLT PET/CT obtained pre-imaging. Active bone marrow is considered to have an uptake value (SUV) of 2, 3, or 4. The standard IMRT plan was created using the criteria of the National Cancer Institute's Radiation Therapy Oncology Group study RTOG-0418. Radiation dose bins evaluated are 5 Gray, 10 Gray, 20 Gray, and 30 Gray. The change in dose to tumor is also provided. A negative value indicates that more bone marrow or tissue was spared using the bone-marrow sparing plan.

Time frame: Baseline (pre-treatment)

Population: Participants who received an FLT PET/CT during radiation simulation and did not withdraw from study participation. Groups 1 and 2 were combined as pre-specified in the study protocol, as the groups were separated only to reduce radiation risk from FLT PET imaging (and not for therapeutic comparison).

ArmMeasureGroupValue (MEAN)Dispersion
All ParticipantsPercent Difference From Baseline IMRT Plan (%)% difference, volume receiving 5 Gray-8.5 Percent difference (%)Standard Deviation 6
All ParticipantsPercent Difference From Baseline IMRT Plan (%)% difference, volume receiving 10 Gray-11.7 Percent difference (%)Standard Deviation 7.3
All ParticipantsPercent Difference From Baseline IMRT Plan (%)% difference, volume receiving 20 Gray-15.8 Percent difference (%)Standard Deviation 3.8
All ParticipantsPercent Difference From Baseline IMRT Plan (%)% difference, volume receiving 30 Gray-16.5 Percent difference (%)Standard Deviation 12.6
All ParticipantsPercent Difference From Baseline IMRT Plan (%)% difference, dose to target (tumor) volume-0.2 Percent difference (%)Standard Deviation 0.1
Secondary

Chemotherapy Compliance

The number of participants who missed at least one prescribed chemotherapy administration due to low blood counts.

Time frame: post-treatment

Population: Participants who received an FLT PET/CT during radiation simulation and did not withdraw from study participation. Groups 1 and 2 were combined as pre-specified in the study protocol, as the groups were separated only to reduce radiation risk from FLT PET imaging (and not for therapeutic comparison).

ArmMeasureCategoryValue (COUNT_OF_PARTICIPANTS)
All ParticipantsChemotherapy ComplianceReceived all chemotherapy as precscribed4 Participants
All ParticipantsChemotherapy ComplianceMissed 1 cycle of chemotherapy1 Participants
Secondary

Number of Participants With Standardized Toxicity Severity Grades for Decreased Absolute Neutrophil Counts (ANCs)

Absolute neutrophil counts (ANCs) measurements expressed in standardized toxicity severity grades (Common Terminology Criteria for Adverse Events, v4.03) measured once weekly during combined chemotherapy and radiation therapy, then once at 30 day follow-up, and once at 1 year follow-up.

Time frame: baseline, weekly during radiation treatment for up to 5 weeks, and 30 days post treatment

Population: Participants who received an FLT PET/CT during radiation simulation and did not withdraw from study participation. Groups 1 and 2 were combined as pre-specified in the study protocol, as the groups were separated only to reduce radiation risk from FLT PET imaging (and not for therapeutic comparison).

ArmMeasureGroupCategoryValue (COUNT_OF_PARTICIPANTS)
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for Decreased Absolute Neutrophil Counts (ANCs)Baseline (pre-treatment)CTCAE grade 10 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for Decreased Absolute Neutrophil Counts (ANCs)Therapy, week 1CTCAE grade 10 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for Decreased Absolute Neutrophil Counts (ANCs)Therapy, week 1CTCAE grade 20 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for Decreased Absolute Neutrophil Counts (ANCs)Therapy, week 2CTCAE grade 10 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for Decreased Absolute Neutrophil Counts (ANCs)Therapy, week 2CTCAE grade 20 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for Decreased Absolute Neutrophil Counts (ANCs)Therapy, week 4Not assessed (test omitted)0 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for Decreased Absolute Neutrophil Counts (ANCs)Therapy, week 5CTCAE grade 30 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for Decreased Absolute Neutrophil Counts (ANCs)Therapy, week 5CTCAE grade 4 (most severe)0 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for Decreased Absolute Neutrophil Counts (ANCs)Baseline (pre-treatment)CTCAE grade 0 (no toxicity)5 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for Decreased Absolute Neutrophil Counts (ANCs)Baseline (pre-treatment)CTCAE grade 20 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for Decreased Absolute Neutrophil Counts (ANCs)Baseline (pre-treatment)CTCAE grade 30 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for Decreased Absolute Neutrophil Counts (ANCs)Baseline (pre-treatment)CTCAE grade 4 (most severe)0 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for Decreased Absolute Neutrophil Counts (ANCs)Baseline (pre-treatment)Not assessed (test omitted)0 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for Decreased Absolute Neutrophil Counts (ANCs)Therapy, week 1CTCAE grade 0 (no toxicity)5 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for Decreased Absolute Neutrophil Counts (ANCs)Therapy, week 1CTCAE grade 30 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for Decreased Absolute Neutrophil Counts (ANCs)Therapy, week 1CTCAE grade 4 (most severe)0 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for Decreased Absolute Neutrophil Counts (ANCs)Therapy, week 1Not assessed (test omitted)0 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for Decreased Absolute Neutrophil Counts (ANCs)Therapy, week 2CTCAE grade 0 (no toxicity)5 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for Decreased Absolute Neutrophil Counts (ANCs)Therapy, week 2CTCAE grade 30 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for Decreased Absolute Neutrophil Counts (ANCs)Therapy, week 2CTCAE grade 4 (most severe)0 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for Decreased Absolute Neutrophil Counts (ANCs)Therapy, week 2Not assessed (test omitted)0 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for Decreased Absolute Neutrophil Counts (ANCs)Therapy, week 3CTCAE grade 0 (no toxicity)3 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for Decreased Absolute Neutrophil Counts (ANCs)Therapy, week 3CTCAE grade 11 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for Decreased Absolute Neutrophil Counts (ANCs)Therapy, week 3CTCAE grade 21 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for Decreased Absolute Neutrophil Counts (ANCs)Therapy, week 3CTCAE grade 30 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for Decreased Absolute Neutrophil Counts (ANCs)Therapy, week 3CTCAE grade 4 (most severe)0 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for Decreased Absolute Neutrophil Counts (ANCs)Therapy, week 3Not assessed (test omitted)0 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for Decreased Absolute Neutrophil Counts (ANCs)Therapy, week 4CTCAE grade 0 (no toxicity)3 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for Decreased Absolute Neutrophil Counts (ANCs)Therapy, week 4CTCAE grade 11 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for Decreased Absolute Neutrophil Counts (ANCs)Therapy, week 4CTCAE grade 21 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for Decreased Absolute Neutrophil Counts (ANCs)Therapy, week 4CTCAE grade 30 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for Decreased Absolute Neutrophil Counts (ANCs)Therapy, week 4CTCAE grade 4 (most severe)0 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for Decreased Absolute Neutrophil Counts (ANCs)Therapy, week 5CTCAE grade 0 (no toxicity)2 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for Decreased Absolute Neutrophil Counts (ANCs)Therapy, week 5CTCAE grade 10 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for Decreased Absolute Neutrophil Counts (ANCs)Therapy, week 5CTCAE grade 21 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for Decreased Absolute Neutrophil Counts (ANCs)Therapy, week 5Not assessed (test omitted)2 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for Decreased Absolute Neutrophil Counts (ANCs)30 days post-therapyCTCAE grade 0 (no toxicity)1 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for Decreased Absolute Neutrophil Counts (ANCs)30 days post-therapyCTCAE grade 11 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for Decreased Absolute Neutrophil Counts (ANCs)30 days post-therapyCTCAE grade 20 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for Decreased Absolute Neutrophil Counts (ANCs)30 days post-therapyCTCAE grade 30 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for Decreased Absolute Neutrophil Counts (ANCs)30 days post-therapyCTCAE grade 4 (most severe)0 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for Decreased Absolute Neutrophil Counts (ANCs)30 days post-therapyNot assessed (test omitted)3 Participants
Secondary

Number of Participants With Standardized Toxicity Severity Grades for Decreased Lymphocyte Counts.

Lymphocyte counts measurements expressed in standardized toxicity severity grades (Common Terminology Criteria for Adverse Events, v4.03) measured once weekly during combined chemotherapy and radiation therapy, then once at 30 day follow-up, and once at 1 year follow-up

Time frame: baseline, weekly during radiation treatment for up to 5 weeks, and 30 days post treatment

Population: Participants who received an FLT PET/CT during radiation simulation and did not withdraw from study participation. Groups 1 and 2 were combined as pre-specified in the study protocol, as the groups were separated only to reduce radiation risk from FLT PET imaging (and not for therapeutic comparison).

ArmMeasureGroupCategoryValue (COUNT_OF_PARTICIPANTS)
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for Decreased Lymphocyte Counts.Baseline (pre-treatment)CTCAE grade 10 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for Decreased Lymphocyte Counts.Therapy, week 2CTCAE grade 0 (no toxicity)1 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for Decreased Lymphocyte Counts.Therapy, week 2CTCAE grade 11 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for Decreased Lymphocyte Counts.Therapy, week 3Not assessed (test omitted)0 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for Decreased Lymphocyte Counts.Therapy, week 4CTCAE grade 0 (no toxicity)0 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for Decreased Lymphocyte Counts.Therapy, week 4CTCAE grade 10 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for Decreased Lymphocyte Counts.Therapy, week 4CTCAE grade 21 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for Decreased Lymphocyte Counts.Therapy, week 4CTCAE grade 4 (most severe)1 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for Decreased Lymphocyte Counts.Therapy, week 4Not assessed (test omitted)0 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for Decreased Lymphocyte Counts.30 days post-therapyCTCAE grade 4 (most severe)0 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for Decreased Lymphocyte Counts.30 days post-therapyNot assessed (test omitted)3 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for Decreased Lymphocyte Counts.Baseline (pre-treatment)CTCAE grade 0 (no toxicity)5 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for Decreased Lymphocyte Counts.Baseline (pre-treatment)CTCAE grade 20 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for Decreased Lymphocyte Counts.Baseline (pre-treatment)CTCAE grade 30 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for Decreased Lymphocyte Counts.Baseline (pre-treatment)CTCAE grade 4 (most severe)0 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for Decreased Lymphocyte Counts.Baseline (pre-treatment)Not assessed (test omitted)0 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for Decreased Lymphocyte Counts.Therapy, week 1CTCAE grade 0 (no toxicity)2 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for Decreased Lymphocyte Counts.Therapy, week 1CTCAE grade 11 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for Decreased Lymphocyte Counts.Therapy, week 1CTCAE grade 22 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for Decreased Lymphocyte Counts.Therapy, week 1CTCAE grade 30 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for Decreased Lymphocyte Counts.Therapy, week 1CTCAE grade 4 (most severe)0 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for Decreased Lymphocyte Counts.Therapy, week 1Not assessed (test omitted)0 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for Decreased Lymphocyte Counts.Therapy, week 2CTCAE grade 21 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for Decreased Lymphocyte Counts.Therapy, week 2CTCAE grade 31 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for Decreased Lymphocyte Counts.Therapy, week 2CTCAE grade 4 (most severe)1 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for Decreased Lymphocyte Counts.Therapy, week 2Not assessed (test omitted)0 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for Decreased Lymphocyte Counts.Therapy, week 3CTCAE grade 0 (no toxicity)0 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for Decreased Lymphocyte Counts.Therapy, week 3CTCAE grade 10 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for Decreased Lymphocyte Counts.Therapy, week 3CTCAE grade 21 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for Decreased Lymphocyte Counts.Therapy, week 3CTCAE grade 34 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for Decreased Lymphocyte Counts.Therapy, week 3CTCAE grade 4 (most severe)0 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for Decreased Lymphocyte Counts.Therapy, week 4CTCAE grade 33 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for Decreased Lymphocyte Counts.Therapy, week 5CTCAE grade 0 (no toxicity)0 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for Decreased Lymphocyte Counts.Therapy, week 5CTCAE grade 10 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for Decreased Lymphocyte Counts.Therapy, week 5CTCAE grade 22 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for Decreased Lymphocyte Counts.Therapy, week 5CTCAE grade 31 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for Decreased Lymphocyte Counts.Therapy, week 5CTCAE grade 4 (most severe)0 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for Decreased Lymphocyte Counts.Therapy, week 5Not assessed (test omitted)2 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for Decreased Lymphocyte Counts.30 days post-therapyCTCAE grade 0 (no toxicity)1 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for Decreased Lymphocyte Counts.30 days post-therapyCTCAE grade 10 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for Decreased Lymphocyte Counts.30 days post-therapyCTCAE grade 21 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for Decreased Lymphocyte Counts.30 days post-therapyCTCAE grade 30 Participants
Secondary

Number of Participants With Standardized Toxicity Severity Grades for Decreased Platelet Counts.

Platelet cell counts measurements expressed in standardized toxicity severity grades (Common Terminology Criteria for Adverse Events, v4.03) measured once weekly during combined chemotherapy and radiation therapy, then once at 30 day follow-up, and once at 1 year follow-up

Time frame: baseline, weekly during radiation treatment for up to 5 weeks, and 30 days post treatment

Population: Participants who received an FLT PET/CT during radiation simulation and did not withdraw from study participation. Groups 1 and 2 were combined as pre-specified in the study protocol, as the groups were separated only to reduce radiation risk from FLT PET imaging (and not for therapeutic comparison).

ArmMeasureGroupCategoryValue (COUNT_OF_PARTICIPANTS)
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for Decreased Platelet Counts.Therapy, week 5CTCAE grade 20 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for Decreased Platelet Counts.Therapy, week 5CTCAE grade 30 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for Decreased Platelet Counts.Baseline (pre-treatment)CTCAE grade 0 (no toxicity)5 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for Decreased Platelet Counts.Baseline (pre-treatment)CTCAE grade 10 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for Decreased Platelet Counts.Baseline (pre-treatment)CTCAE grade 20 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for Decreased Platelet Counts.Baseline (pre-treatment)CTCAE grade 30 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for Decreased Platelet Counts.Baseline (pre-treatment)CTCAE grade 4 (most severe)0 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for Decreased Platelet Counts.Baseline (pre-treatment)Not assessed (test omitted)0 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for Decreased Platelet Counts.Therapy, week 1CTCAE grade 0 (no toxicity)5 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for Decreased Platelet Counts.Therapy, week 1CTCAE grade 10 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for Decreased Platelet Counts.Therapy, week 1CTCAE grade 20 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for Decreased Platelet Counts.Therapy, week 1CTCAE grade 30 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for Decreased Platelet Counts.Therapy, week 1CTCAE grade 4 (most severe)0 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for Decreased Platelet Counts.Therapy, week 1Not assessed (test omitted)0 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for Decreased Platelet Counts.Therapy, week 2CTCAE grade 0 (no toxicity)4 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for Decreased Platelet Counts.Therapy, week 2CTCAE grade 11 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for Decreased Platelet Counts.Therapy, week 2CTCAE grade 20 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for Decreased Platelet Counts.Therapy, week 2CTCAE grade 30 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for Decreased Platelet Counts.Therapy, week 2CTCAE grade 4 (most severe)0 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for Decreased Platelet Counts.Therapy, week 2Not assessed (test omitted)0 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for Decreased Platelet Counts.Therapy, week 3CTCAE grade 0 (no toxicity)3 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for Decreased Platelet Counts.Therapy, week 3CTCAE grade 12 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for Decreased Platelet Counts.Therapy, week 3CTCAE grade 20 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for Decreased Platelet Counts.Therapy, week 3CTCAE grade 30 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for Decreased Platelet Counts.Therapy, week 3CTCAE grade 4 (most severe)0 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for Decreased Platelet Counts.Therapy, week 3Not assessed (test omitted)0 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for Decreased Platelet Counts.Therapy, week 4CTCAE grade 0 (no toxicity)2 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for Decreased Platelet Counts.Therapy, week 4CTCAE grade 13 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for Decreased Platelet Counts.Therapy, week 4CTCAE grade 20 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for Decreased Platelet Counts.Therapy, week 4CTCAE grade 30 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for Decreased Platelet Counts.Therapy, week 4CTCAE grade 4 (most severe)0 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for Decreased Platelet Counts.Therapy, week 4Not assessed (test omitted)0 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for Decreased Platelet Counts.Therapy, week 5CTCAE grade 0 (no toxicity)1 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for Decreased Platelet Counts.Therapy, week 5CTCAE grade 12 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for Decreased Platelet Counts.Therapy, week 5CTCAE grade 4 (most severe)0 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for Decreased Platelet Counts.Therapy, week 5Not assessed (test omitted)2 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for Decreased Platelet Counts.30 days post-therapyCTCAE grade 0 (no toxicity)2 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for Decreased Platelet Counts.30 days post-therapyCTCAE grade 10 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for Decreased Platelet Counts.30 days post-therapyCTCAE grade 20 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for Decreased Platelet Counts.30 days post-therapyCTCAE grade 30 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for Decreased Platelet Counts.30 days post-therapyCTCAE grade 4 (most severe)0 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for Decreased Platelet Counts.30 days post-therapyNot assessed (test omitted)3 Participants
Secondary

Number of Participants With Standardized Toxicity Severity Grades for White Blood Cell Counts

White blood cell counts measurements expressed in standardized toxicity severity grades (Common Terminology Criteria for Adverse Events, v4.03) measured weekly during combined chemotherapy and radiation therapy treatment and then once at 30 day follow-up and at 1 year follow-up

Time frame: baseline, weekly during radiation treatment for up to 5 weeks, and 30 days post treatment

Population: Participants who received an FLT PET/CT during radiation simulation and did not withdraw from study participation. Groups 1 and 2 were combined as pre-specified in the study protocol, as the groups were separated only to reduce radiation risk from FLT PET imaging (and not for therapeutic comparison).

ArmMeasureGroupCategoryValue (COUNT_OF_PARTICIPANTS)
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for White Blood Cell CountsTherapy, week 5CTCAE grade 0 (no toxicity)2 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for White Blood Cell CountsTherapy, week 5CTCAE grade 10 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for White Blood Cell CountsTherapy, week 5Not assessed (test omitted)2 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for White Blood Cell Counts30 days post-therapyCTCAE grade 4 (most severe)0 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for White Blood Cell Counts30 days post-therapyNot assessed (test omitted)3 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for White Blood Cell CountsBaseline (pre-treatment)CTCAE grade 0 (no toxicity)5 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for White Blood Cell CountsBaseline (pre-treatment)CTCAE grade 10 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for White Blood Cell CountsBaseline (pre-treatment)CTCAE grade 20 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for White Blood Cell CountsBaseline (pre-treatment)CTCAE grade 30 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for White Blood Cell CountsBaseline (pre-treatment)CTCAE grade 4 (most severe)0 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for White Blood Cell CountsBaseline (pre-treatment)Not assessed (test omitted)0 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for White Blood Cell CountsTherapy, week 1CTCAE grade 0 (no toxicity)5 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for White Blood Cell CountsTherapy, week 1CTCAE grade 10 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for White Blood Cell CountsTherapy, week 1CTCAE grade 20 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for White Blood Cell CountsTherapy, week 1CTCAE grade 30 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for White Blood Cell CountsTherapy, week 1CTCAE grade 4 (most severe)0 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for White Blood Cell CountsTherapy, week 1Not assessed (test omitted)0 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for White Blood Cell CountsTherapy, week 2CTCAE grade 0 (no toxicity)4 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for White Blood Cell CountsTherapy, week 2CTCAE grade 11 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for White Blood Cell CountsTherapy, week 2CTCAE grade 20 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for White Blood Cell CountsTherapy, week 2CTCAE grade 30 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for White Blood Cell CountsTherapy, week 2CTCAE grade 4 (most severe)0 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for White Blood Cell CountsTherapy, week 2Not assessed (test omitted)0 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for White Blood Cell CountsTherapy, week 3CTCAE grade 0 (no toxicity)3 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for White Blood Cell CountsTherapy, week 3CTCAE grade 10 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for White Blood Cell CountsTherapy, week 3CTCAE grade 22 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for White Blood Cell CountsTherapy, week 3CTCAE grade 30 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for White Blood Cell CountsTherapy, week 3CTCAE grade 4 (most severe)0 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for White Blood Cell CountsTherapy, week 3Not assessed (test omitted)0 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for White Blood Cell CountsTherapy, week 4CTCAE grade 0 (no toxicity)3 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for White Blood Cell CountsTherapy, week 4CTCAE grade 10 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for White Blood Cell CountsTherapy, week 4CTCAE grade 22 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for White Blood Cell CountsTherapy, week 4CTCAE grade 30 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for White Blood Cell CountsTherapy, week 4CTCAE grade 4 (most severe)0 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for White Blood Cell CountsTherapy, week 4Not assessed (test omitted)0 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for White Blood Cell CountsTherapy, week 5CTCAE grade 21 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for White Blood Cell CountsTherapy, week 5CTCAE grade 30 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for White Blood Cell CountsTherapy, week 5CTCAE grade 4 (most severe)0 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for White Blood Cell Counts30 days post-therapyCTCAE grade 0 (no toxicity)1 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for White Blood Cell Counts30 days post-therapyCTCAE grade 10 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for White Blood Cell Counts30 days post-therapyCTCAE grade 21 Participants
All ParticipantsNumber of Participants With Standardized Toxicity Severity Grades for White Blood Cell Counts30 days post-therapyCTCAE grade 30 Participants

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