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Proton Therapy in Reducing Toxicity in Anal Cancer

A Prospective Pilot Study to Evaluate the Feasibility of Intensity Modulated Proton Therapy in Reducing Toxicity in Anal Cancer

Status
Active, not recruiting
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT03018418
Enrollment
14
Registered
2017-01-12
Start date
2017-01-04
Completion date
2025-07-01
Last updated
2024-09-19

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

Conditions

Anus Neoplasms

Keywords

Anal Cancer

Brief summary

The purpose of this research study is to determine whether the amount of radiation given to the normal areas around the anal cancer can be reduced by using Proton Therapy while reducing the side effects that are seen with standard therapy.

Interventions

RADIATIONProton therapy

Primary target volume 50.4-54 CGE in 28-30 fractions; Nodal volumes 42-54 CGE in 28-30 fractions

DRUGChemotherapy

5FU 1000 mg/m2/day as 96 hour infusion days 1-5 and 29-33; Mitomycin 10mg/m2 days 1 and 29

Sponsors

Jordan Kharofa
Lead SponsorOTHER

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

* Karnofsky Performance Status \>70% * Histologically documented squamous or basaloid carcinoma of the anal canal * Stage T2-4 disease with any N category

Exclusion criteria

• Patients with a life expectancy of \< 3 months.

Design outcomes

Primary

MeasureTime frameDescription
Rates of Acute Toxicity3 monthsGrade 3 or greater hematologic, gastrointestinal, genitourinary, and dermatologic toxicity

Secondary

MeasureTime frameDescription
Complete Response Rateat 6 months from the completion of chemoradiationComplete response was clinically determined by digital rectal examination and proctosigmoidoscopy supplemented with pelvic axial imaging. Biopsy was not required. The complete response was the absence of disease based on these evaluations. Any measurable disease at 6 months from the completion of chemoradiation will be considered a local treatment failure. Any tumor recurrence in the anus in patients who initially had a complete response will be considered a local recurrence.
Local Progression Free Survivalevery 6 months up to 60 monthsThis is the percentage of subjects that were free of local progression.
Rates of Late Toxicityevery 6 months up to 60 monthsGrade 3 or greater hematologic, gastrointestinal, genitourinary, and dermatologic toxicity
Distant Metastases Free Survivalevery 6 months up to 60 monthsThis is the percentage of subjects that were free of distant metastases.
Quality of Life Changesbefore treatment and 12 months after start of treatmentUtilization of the Patient Reported Outcomes- Common Toxicity Criteria for Adverse Events at pretreatment and up to 12 months. This measure used the difference total score for each subject's baseline and latest PROCTCAE available. The reported statistic is the number of subjects that showed a reduction in scores between the two time points.
Overall Survivalevery 6 months up to 24 monthsThis is an estimated percentage of participants that is alive at 2 years.

Countries

United States

Participant flow

Participants by arm

ArmCount
Proton Therapy and Chemotherapy
Standard chemoradiation using 5-FU, Mitomycin, with pencil beam proton radiotherapy Proton therapy: Primary target volume 50.4-54 CGE in 28-30 fractions; Nodal volumes 42-54 CGE in 28-30 fractions Chemotherapy: 5FU 1000 mg/m2/day as 96 hour infusion days 1-5 and 29-33; Mitomycin 10mg/m2 days 1 and 29
14
Total14

Baseline characteristics

CharacteristicProton Therapy and Chemotherapy
Age, Categorical
<=18 years
0 Participants
Age, Categorical
>=65 years
4 Participants
Age, Categorical
Between 18 and 65 years
10 Participants
Age, Continuous56 years
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants
Race (NIH/OMB)
Asian
0 Participants
Race (NIH/OMB)
Black or African American
4 Participants
Race (NIH/OMB)
More than one race
0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants
Race (NIH/OMB)
White
10 Participants
Region of Enrollment
United States
14 participants
Sex: Female, Male
Female
7 Participants
Sex: Female, Male
Male
7 Participants

Adverse events

Event typeEG000
affected / at risk
deaths
Total, all-cause mortality
2 / 14
other
Total, other adverse events
13 / 14
serious
Total, serious adverse events
7 / 14

Outcome results

Primary

Rates of Acute Toxicity

Grade 3 or greater hematologic, gastrointestinal, genitourinary, and dermatologic toxicity

Time frame: 3 months

Population: The population is the subjects that had at least one adverse event that was grade 3 or higher in one of the following categories: hematologic, gastrointestinal, genitourinary, and dermatologic

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Grade 3+ Hematologic, Gastrointestinal, Genitourinary, and Dermatologic ToxicityRates of Acute Toxicity12 Participants
Secondary

Complete Response Rate

Complete response was clinically determined by digital rectal examination and proctosigmoidoscopy supplemented with pelvic axial imaging. Biopsy was not required. The complete response was the absence of disease based on these evaluations. Any measurable disease at 6 months from the completion of chemoradiation will be considered a local treatment failure. Any tumor recurrence in the anus in patients who initially had a complete response will be considered a local recurrence.

Time frame: at 6 months from the completion of chemoradiation

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Grade 3+ Hematologic, Gastrointestinal, Genitourinary, and Dermatologic ToxicityComplete Response Rate11 Participants
Secondary

Distant Metastases Free Survival

This is the percentage of subjects that were free of distant metastases.

Time frame: every 6 months up to 60 months

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Grade 3+ Hematologic, Gastrointestinal, Genitourinary, and Dermatologic ToxicityDistant Metastases Free Survival13 Participants
Secondary

Local Progression Free Survival

This is the percentage of subjects that were free of local progression.

Time frame: every 6 months up to 60 months

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Grade 3+ Hematologic, Gastrointestinal, Genitourinary, and Dermatologic ToxicityLocal Progression Free Survival12 Participants
Secondary

Overall Survival

This is an estimated percentage of participants that is alive at 2 years.

Time frame: every 6 months up to 24 months

Population: time from the date of registration to the date of death due to all causes

ArmMeasureValue (NUMBER)
Grade 3+ Hematologic, Gastrointestinal, Genitourinary, and Dermatologic ToxicityOverall Survival76 percentage of subjects
Secondary

Quality of Life Changes

Utilization of the Patient Reported Outcomes- Common Toxicity Criteria for Adverse Events at pretreatment and up to 12 months. This measure used the difference total score for each subject's baseline and latest PROCTCAE available. The reported statistic is the number of subjects that showed a reduction in scores between the two time points.

Time frame: before treatment and 12 months after start of treatment

Population: This measure examines all 14 subjects.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Grade 3+ Hematologic, Gastrointestinal, Genitourinary, and Dermatologic ToxicityQuality of Life Changes9 Participants
Secondary

Rates of Late Toxicity

Grade 3 or greater hematologic, gastrointestinal, genitourinary, and dermatologic toxicity

Time frame: every 6 months up to 60 months

Population: The population is the subjects that had at least one adverse event that was grade 3 or higher in one of the following categories: hematologic, gastrointestinal, genitourinary, and dermatologic

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Grade 3+ Hematologic, Gastrointestinal, Genitourinary, and Dermatologic ToxicityRates of Late Toxicity6 Participants

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