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OXEL: Immune Checkpoint or Capecitabine or Combination Therapy as Adjuvant Therapy for TNBC With Residual Disease

OXEL: A Pilot Study of Immune Checkpoint or Capecitabine or Combination Therapy as Adjuvant Therapy for Triple Negative Breast Cancer With Residual Disease Following Neoadjuvant Chemotherapy

Status
Completed
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT03487666
Enrollment
45
Registered
2018-04-04
Start date
2018-05-21
Completion date
2024-05-02
Last updated
2024-12-03

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

Conditions

Triple Negative Breast Cancer

Keywords

Triple Negative Breast Cancer, Nivolumab, Capecitabine

Brief summary

This pilot study will provide preliminary data regarding the role of PIS in predicting the benefit of immune checkpoint inhibition with or without chemotherapy for high risk patients with TNBC and residual disease after effective neoadjuvant chemotherapy.

Interventions

DRUGNivolumab

Nivolumab is a human programmed death receptor-1 (PD-1) antibody currently approved in different diseases.

DRUGCapecitabine

Capecitabine was selected for Arm B given the recent results from CREATE-X trial and the increasing use by the community (feasibility). Importantly, available data from other scenarios indicates that capecitabine does not have immunosuppressive effects

Sponsors

Bristol-Myers Squibb
CollaboratorINDUSTRY
Georgetown University
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

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

Inclusion criteria

1. Biopsy proven TNBC: * ER- and PR- defined as ≤5% cells stain positive * HER2 negativity defined as: * IHC 0, 1+ without in situ hybridization (ISH) HER2/neu chromosome 17 ratio OR * IHC 2+ and ISH HER2/neu chromosome 17 ratio non-amplified with ratio less than 2.0 and if reported average HER2 copy number \< 6 signals/cells 2. Residual disease of 1.0 cm at least of the primary tumor and/or node positive disease (at least ypN1) 3. Patients must have completed neoadjuvant chemotherapy; patients must NOT have received capecitabine as part of their neoadjuvant therapy regimen. Acceptable preoperative regimens include an anthracycline or a taxane, or both. Participants who received preoperative therapy as part of a clinical trial may enroll. Participants may not have received adjuvant chemotherapy after s urgery prior to randomization. . Carboplatin-containing neoadjuvant chemotherapy is also allowed). Patients who cannot complete all planned neoadjuvant treatment cycles for any reason are considered high risk and therefore are eligible for the study if they have residual disease. 4. Recovery of all toxicities from previous therapies to at least grade 1, except alopecia and ≤ grade 2 neuropathy which are allowed. 5. Must have completed definitive resection of primary tumor and have no evidence of unresected or metastatic disease at the time of study entry * Negative margins for both invasive and ductal carcinoma in situ (DCIS) are desirable, however patients with positive margins may enroll if the treatment team believes no further surgery is possible and patient has received radiotherapy; patients with margins positive for lobular carcinoma in situ (LCIS) are eligible * Either mastectomy or breast conserving surgery (including lumpectomy or partial mastectomy) is acceptable * Sentinel node biopsy post neoadjuvant chemotherapy (i.e. at the time of definitive surgery) is allowed; axillary dissection is encouraged in patients with lymph node involvement, but is not mandatory 6. ECOG PS 0-2 7. Patients must not be planning to receive concomitantly other biologic therapy, hormonal therapy, other chemotherapy, surgery or other anti-cancer therapy except radiation therapy while receiving treatment on this protocol. 8. At the time of registration (randomization), patients must have the following laboratory results (obtained within 28 days prior to registration): 1. A serum TSH prior to registration to obtain a baseline value. 2. Patients must have adequate bone marrow function as evidenced by all of the following: * ANC ≥ 1,500 microliter (mcL); * Platelets ≥ 100,000/mcL; * Hemoglobin ≥ 9 g/dL. 3. Patients must have adequate hepatic function as evidenced by the following: * Total bilirubin ≤ 1.5 x institutional upper limit of normal (IULN) (except Gilbert's Syndrome, who must have a total bilirubin \< 3.0 mg/dL), and * SGOT (AST) or SGPT (ALT) and alkaline phosphatase ≤ 2.5 x IULN. 4. Patients must have adequate renal function as evidenced by ONE of the following: * Serum creatinine ≤ IULN OR * Measured or calculated creatinine clearance ≥ 60 mL/min. 5. Women of childbearing potential must have a negative urine or serum pregnancy test within 28 days prior to registration and within 24h prior to the start of nivolumab. In addition, women of childbearing potential must agree to have a pregnancy test every 4 weeks while on nivolumab. 9. Signed ICF 10. Age ≥18

Exclusion criteria

1. Stage IV disease 2. Receipt of adjuvant chemotherapy 3. Diagnosis of other invasive cancer except for adequately treated cervix cancer or skin cancer, or more than 5 years since other diagnosis of invasive cancer without current evidence of disease 4. Previous exposure to capecitabine, fluorouracil or immunotherapy with anti-PD1, anti-PDL1, anti-CTLA4 or similar drugs. 5. Active autoimmune disease that has required systemic treatment in the past 2 years; replacement therapy is not considered a form of systemic therapy 6. TB, active hepatitis B, active hepatitis C or other active infection. Patients who have completed curative therapy for HCV are eligible. Patients with known HIV infection are eligible if they meet each of the following 3 criteria: CD4 counts ≥ 350 mm3; serum HIV viral load of \< 25,000 IU/ml and treated on a stable antiretroviral regimen. 7. History of (non-infectious) pneumonitis that required steroids or evidence of active pneumonia 8. Uncontrolled disease 9. Chronic use of systemic steroids 10. Live vaccine within 30 days prior to registration. 11. Incapacity to provide consent or to follow clinical trial procedures 12. Pregnancy, lactation, or planning to be pregnant Patients with microsatellite unstable tumors will not be excluded as immunotherapy as adjuvant therapy is not standard for these patients but we will prospective collect this data.

Design outcomes

Primary

MeasureTime frameDescription
Percent Change in the Peripheral Immunoscore (PIS) at Week 66 weeksPIS were developed using methods previously described (Farsaci, B. et al. Cancer Immunol. Res. 2016), based on tertile distribution of frequencies and ratios of peripheral immune cell subsets in patients prior to therapy. Immune subsets were calculated as a % of PBMC and sorted by frequency. Points were assigned to each subset in a given patient based on tertile distribution. For subsets with an expected positive effect on anti-tumor immunity zero (0) points were assigned to the low bin, one (1) point for the middle bin, and two (2) points if in the high bin. For subsets with an expected negative effect on anti-tumor immunity zero (0) points were assigned to the high bin, one (1) point for the middle bin, and two (2) points if in the low bin. The peripheral immunoscore for a given patient was the sum of points assigned to the individual PBMC subsets that were included within the immunoscore. Positive change means enhanced and negative change means reduced immune function.

Secondary

MeasureTime frameDescription
Percent Change of Peripheral Immuno Score (PIS) at Week 1212 weeksPISs were developed using methods previously described (Farsaci, B. et al. Cancer Immunol. Res. 2016), based on tertile distribution of frequencies and ratios of peripheral immune cell subsets in patients prior to therapy. Immune subsets were calculated as a % of PBMC and sorted by frequency. Points were assigned to each subset in a given patient based on tertile distribution. For subsets with an expected positive effect on anti-tumor immunity zero (0) points were assigned to the low bin, one (1) point for the middle bin, and two (2) points if in the high bin. For subsets with an expected negative effect on anti-tumor immunity zero (0) points were assigned to the high bin, one (1) point for the middle bin, and two (2) points if in the low bin. The peripheral immunoscore for a given patient was the sum of points assigned to the individual PBMC subsets that were included within the immunoscore. Positivie change mean enhanced and negative change means reduced immune function.
Grade 3 and 4 Adverse EventsFrom date of consent until 100 days after the last dose of study treatment, approximately up to 11 monthsThe number of grade 3 and 4 adverse events as assessed clinically by an investigator, according to the National Cancer Institute Common Toxicity Criteria for Adverse Events Version 4.0 \[NCI CTCAE v4.03\]. Grade 4 adverse events were associated with worse outcomes.
Invasive Disease Free Survival (DRFS)2 yearsiDFS was defined as the time from date of randomization to the date of first invasive disease recurrence, second invasive primary cancer (breast or not), or death from any cause.
Circulating Tumor DNA6 weeks and 12 weeksOut of the patients with available ct-DNA samples at baseline, week 6 and week 12, the proportion of patients with detectable ct-DNA at the same timepoints.

Countries

United States

Participant flow

Participants by arm

ArmCount
Arm A- Nivolumab
Nivolumab 360 mg iv q3weeks for x 6 cycles Nivolumab: Nivolumab is a human programmed death receptor-1 (PD-1) antibody currently approved in different diseases.
15
Arm B- Capecitabine
Capecitabine 1250mg/m2 bid D1-D14 q3 weeks x 6 cycles Capecitabine: Capecitabine was selected for Arm B given the recent results from CREATE-X trial and the increasing use by the community (feasibility). Importantly, available data from other scenarios indicates that capecitabine does not have immunosuppressive effects
15
Arm C Nivolumab + Capecitabine
Nivolumab 360mg iv q3weeks + Capecitabine 1250mg/m2 bid D1-D14 q3 weeks x 6 cycles Nivolumab: Nivolumab is a human programmed death receptor-1 (PD-1) antibody currently approved in different diseases. Capecitabine: Capecitabine was selected for Arm B given the recent results from CREATE-X trial and the increasing use by the community (feasibility). Importantly, available data from other scenarios indicates that capecitabine does not have immunosuppressive effects
15
Total45

Withdrawals & dropouts

PeriodReasonFG000FG001FG002
Overall StudyAdverse Event001
Overall StudyDisease progression420

Baseline characteristics

CharacteristicArm A- NivolumabArm B- CapecitabineArm C Nivolumab + CapecitabineTotal
Age, Categorical
<=18 years
0 Participants0 Participants0 Participants0 Participants
Age, Categorical
>=65 years
1 Participants1 Participants2 Participants4 Participants
Age, Categorical
Between 18 and 65 years
14 Participants14 Participants13 Participants41 Participants
Ethnicity (NIH/OMB)
Hispanic or Latino
1 Participants1 Participants2 Participants4 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
14 Participants13 Participants13 Participants40 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants1 Participants0 Participants1 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Asian
1 Participants0 Participants0 Participants1 Participants
Race (NIH/OMB)
Black or African American
2 Participants6 Participants7 Participants15 Participants
Race (NIH/OMB)
More than one race
0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants1 Participants0 Participants1 Participants
Race (NIH/OMB)
Unknown or Not Reported
1 Participants2 Participants0 Participants3 Participants
Race (NIH/OMB)
White
11 Participants6 Participants8 Participants25 Participants
Sex: Female, Male
Female
15 Participants15 Participants15 Participants45 Participants
Sex: Female, Male
Male
0 Participants0 Participants0 Participants0 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
deaths
Total, all-cause mortality
5 / 152 / 152 / 15
other
Total, other adverse events
14 / 1515 / 1515 / 15
serious
Total, serious adverse events
3 / 150 / 153 / 15

Outcome results

Primary

Percent Change in the Peripheral Immunoscore (PIS) at Week 6

PIS were developed using methods previously described (Farsaci, B. et al. Cancer Immunol. Res. 2016), based on tertile distribution of frequencies and ratios of peripheral immune cell subsets in patients prior to therapy. Immune subsets were calculated as a % of PBMC and sorted by frequency. Points were assigned to each subset in a given patient based on tertile distribution. For subsets with an expected positive effect on anti-tumor immunity zero (0) points were assigned to the low bin, one (1) point for the middle bin, and two (2) points if in the high bin. For subsets with an expected negative effect on anti-tumor immunity zero (0) points were assigned to the high bin, one (1) point for the middle bin, and two (2) points if in the low bin. The peripheral immunoscore for a given patient was the sum of points assigned to the individual PBMC subsets that were included within the immunoscore. Positive change means enhanced and negative change means reduced immune function.

Time frame: 6 weeks

ArmMeasureValue (MEAN)
Arm A- NivolumabPercent Change in the Peripheral Immunoscore (PIS) at Week 630.63 % Change in PIS
Arm B- CapecitabinePercent Change in the Peripheral Immunoscore (PIS) at Week 6-21.9 % Change in PIS
Arm C Nivolumab + CapecitabinePercent Change in the Peripheral Immunoscore (PIS) at Week 632.285 % Change in PIS
Secondary

Circulating Tumor DNA

Out of the patients with available ct-DNA samples at baseline, week 6 and week 12, the proportion of patients with detectable ct-DNA at the same timepoints.

Time frame: 6 weeks and 12 weeks

Population: The number analyzed reflects those patients that had samples that were analyzed.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Arm A- NivolumabCirculating Tumor DNAWeek 66 Participants
Arm A- NivolumabCirculating Tumor DNABaseline6 Participants
Arm A- NivolumabCirculating Tumor DNAWeek 126 Participants
Arm B- CapecitabineCirculating Tumor DNAWeek 62 Participants
Arm B- CapecitabineCirculating Tumor DNABaseline4 Participants
Arm B- CapecitabineCirculating Tumor DNAWeek 123 Participants
Arm C Nivolumab + CapecitabineCirculating Tumor DNABaseline4 Participants
Arm C Nivolumab + CapecitabineCirculating Tumor DNAWeek 121 Participants
Arm C Nivolumab + CapecitabineCirculating Tumor DNAWeek 61 Participants
Secondary

Grade 3 and 4 Adverse Events

The number of grade 3 and 4 adverse events as assessed clinically by an investigator, according to the National Cancer Institute Common Toxicity Criteria for Adverse Events Version 4.0 \[NCI CTCAE v4.03\]. Grade 4 adverse events were associated with worse outcomes.

Time frame: From date of consent until 100 days after the last dose of study treatment, approximately up to 11 months

ArmMeasureGroupValue (NUMBER)
Arm A- NivolumabGrade 3 and 4 Adverse EventsGrade 4 Adverse Events0 number of adverse events
Arm A- NivolumabGrade 3 and 4 Adverse EventsGrade 3 Adverse Events2 number of adverse events
Arm B- CapecitabineGrade 3 and 4 Adverse EventsGrade 4 Adverse Events0 number of adverse events
Arm B- CapecitabineGrade 3 and 4 Adverse EventsGrade 3 Adverse Events8 number of adverse events
Arm C Nivolumab + CapecitabineGrade 3 and 4 Adverse EventsGrade 4 Adverse Events0 number of adverse events
Arm C Nivolumab + CapecitabineGrade 3 and 4 Adverse EventsGrade 3 Adverse Events3 number of adverse events
Secondary

Invasive Disease Free Survival (DRFS)

iDFS was defined as the time from date of randomization to the date of first invasive disease recurrence, second invasive primary cancer (breast or not), or death from any cause.

Time frame: 2 years

ArmMeasureValue (MEDIAN)
Arm A- NivolumabInvasive Disease Free Survival (DRFS)16.75 Months
Arm B- CapecitabineInvasive Disease Free Survival (DRFS)16.04 Months
Arm C Nivolumab + CapecitabineInvasive Disease Free Survival (DRFS)21.37 Months
Secondary

Percent Change of Peripheral Immuno Score (PIS) at Week 12

PISs were developed using methods previously described (Farsaci, B. et al. Cancer Immunol. Res. 2016), based on tertile distribution of frequencies and ratios of peripheral immune cell subsets in patients prior to therapy. Immune subsets were calculated as a % of PBMC and sorted by frequency. Points were assigned to each subset in a given patient based on tertile distribution. For subsets with an expected positive effect on anti-tumor immunity zero (0) points were assigned to the low bin, one (1) point for the middle bin, and two (2) points if in the high bin. For subsets with an expected negative effect on anti-tumor immunity zero (0) points were assigned to the high bin, one (1) point for the middle bin, and two (2) points if in the low bin. The peripheral immunoscore for a given patient was the sum of points assigned to the individual PBMC subsets that were included within the immunoscore. Positivie change mean enhanced and negative change means reduced immune function.

Time frame: 12 weeks

ArmMeasureValue (MEAN)
Arm A- NivolumabPercent Change of Peripheral Immuno Score (PIS) at Week 1233.3 % Change in PIS
Arm B- CapecitabinePercent Change of Peripheral Immuno Score (PIS) at Week 12-16.2 % Change in PIS
Arm C Nivolumab + CapecitabinePercent Change of Peripheral Immuno Score (PIS) at Week 1218.83 % Change in PIS

Source: ClinicalTrials.gov · Data processed: Feb 22, 2026