NCT04872738

Brief Summary

This study aims to elicit patient experiences, choices, and side effects associated with the COVID-19 vaccine after breast cancer surgery. Lymph node swelling is a known and common side effect of both the Moderna and Pfizer COVID-19 vaccines. This is the body's normal reaction to the vaccine. It is worrisome that lymph node swelling after the vaccine mimics that found in breast cancer which has spread to the lymph nodes. This side effect will cause worry and anxiety amongst patients as a result. For patients who have had lymph node removal (axillary lymph node dissection or sentinel lymph node biopsy) and are at risk of lymphedema, the investigators are concerned that the lymph node swelling may tax the lymphatic system and incite lymphedema in those at risk or worsen it in those with BCRL. Fear of lymphedema is high in this population and the investigators need to better understand what risk, if any, lymph node swelling after the COVID-19 vaccine imparts to BCRL risk.

Trial Health

87
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
714

participants targeted

Target at P75+ for all trials

Timeline
Completed

Started May 2021

Geographic Reach
1 country

1 active site

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

First Submitted

Initial submission to the registry

May 2, 2021

Completed
2 days until next milestone

First Posted

Study publicly available on registry

May 4, 2021

Completed
3 days until next milestone

Study Start

First participant enrolled

May 7, 2021

Completed
1.9 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

March 17, 2023

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

March 17, 2023

Completed
2.8 years until next milestone

Results Posted

Study results publicly available

January 6, 2026

Completed
Last Updated

January 6, 2026

Status Verified

October 1, 2025

Enrollment Period

1.9 years

First QC Date

May 2, 2021

Results QC Date

June 9, 2025

Last Update Submit

December 15, 2025

Conditions

Keywords

Breast CancerVaccinationLymphadenopathy

Outcome Measures

Primary Outcomes (5)

  • COVID-19 Vaccination on Contralateral vs Ipsilateral Arm

    The investigators expect 90% of participants to receive the COVID-19 vaccine on their contralateral (unaffected) arm. This outcome measure is looking at the number of participants who received the COVID-19 vaccine on the side of breast cancer treatment vs those who received the vaccine on the opposite side of breast cancer treatment. Patients with bilateral cancer were excluded from this analysis due to the nature of breast cancer laterality categorization.

    This was a survey study of patients with breast surgery for breast cancer. Participants replied to the online survey up to 361.5 months post their breast surgery (median 69.0 months). This was the study's reported timeframe in the published manuscript.

  • Lymph Node (LN) Swelling After COVID-19 Vaccine

    The investigators expect 10-15% of participants to experience lymph node swelling after receiving the Pfizer or Moderna vaccines. The outcome measure analyzes the number of participants who experienced LN swelling after receiving each dose of their COVID-19 vaccines. The analysis looked at what location on the body lymph node swelling occurred (axilla vs supraclavicular region), which side of the body this swelling occurred in relation to the side of the body that received the vaccine (ipsilateral vs contralateral), and which side of the body this swelling occurred in relation to the side of the body the patient has/had breast cancer (ipsilateral vs contralateral). Patients with bilateral cancer were excluded from the analysis of LN swelling in relation to both the vaccine and breast cancer laterality due to the nature of BC laterality categorization. Analysis on breast cancer laterality and LN swelling was not conducted for the non-mRNA vaccine (Johnson \& Johnson) group.

    This was a survey study of patients with breast surgery for breast cancer. Participants replied to the online survey up to 361.5 months post their breast surgery (median 69.0 months). This was the study's reported timeframe in the published manuscript.

  • Duration of Lymph Node Swelling as a Side Effect of mRNA and Non-mRNA Vaccines

    The outcome measure will be analyzing the reported duration of lymph node swelling, categorized by the location at which lymph node swelling occurred (the axilla vs supraclavicular region) and which side of the body this swelling occurred in relation to the side of the body that received the vaccine injection (ipsilateral vs contralateral). The main aim of this paper was to report the side effects of the mRNA COVID-19 vaccines in patients treated for breast cancer.

    This was a survey study of patients with breast surgery for breast cancer. Participants replied to the online survey up to 361.5 months post their breast surgery (median 69.0 months). This was the study's reported timeframe in the published manuscript.

  • Reported Side Effects of the mRNA and Non-mRNA Vaccines

    Due to the inherent activity of mRNA vaccines and the immune system, as well as the role of the lymph nodes in breast cancer (BC) and in breast cancer-related lymphedema (BCRL), this study analyzed the side effect profile in patients treated for BC and who received up to three doses of the COVID-19 vaccinations \[Moderna, Pfizer\]. A separate analysis is presented on results from participants who received the Johnson \& Johnson (J\&J) vaccine as lymph node swelling is not a listed side effect of this non-mRNA vaccine and only a small proportion of the population received this vaccine.

    This was a survey study of patients with breast surgery for breast cancer. Participants replied to the online survey up to 361.5 months post their breast surgery (median 69.0 months). This was the study's reported timeframe in the published manuscript.

  • Duration of Side Effects of mRNA and Non-mRNA Vaccines

    Due to the inherent activity of mRNA vaccines and the immune system, as well as the role of the lymph nodes in breast cancer (BC) and in breast cancer-related lymphedema (BCRL), this study analyzed the side effect profile in patients treated for BC and who received up to three doses of the COVID-19 vaccinations \[Moderna, Pfizer\]. A separate analysis is presented on results from participants who received the Johnson \& Johnson (J\&J) vaccine as lymph node swelling is not a listed side effect of this non-mRNA vaccine and only a small proportion of the population received this vaccine. This outcome analyzes the duration of side effects associated with each dose of the vaccine.

    This was a survey study of patients with breast surgery for breast cancer. Participants replied to the online survey up to 361.5 months post their breast surgery (median 69.0 months). This was the study's reported timeframe in the published manuscript.

Study Arms (2)

Vaccinated Breast Cancer Patients [mRNA vaccine - Moderna, Pfizer]

Patients who enroll in the trial and decided to get the COVID-19 vaccine will complete surveys to indicate their experiences, side effects, location of vaccination (i.e. right arm, left arm, or leg). This information will be analyzed in conjunction with their breast cancer treatment history and lymphedema measurements. Participants were separated into two different cohorts for analysis, Cohort 1 being those who received an mRNA vaccine for their primary vaccination series (two doses of Moderna or Pfizer) and Cohort 2 being those who received a non-mRNA vaccination for their primary vaccination series (one dose of Johnson \& Johnson).

Other: Survey

Vaccinated Breast Cancer Patients [non-mRNA vaccine - Johnson & Johnson]

Patients who enroll in the trial and decided to get the COVID-19 vaccine will complete surveys to indicate their experiences, side effects, location of vaccination (i.e. right arm, left arm, or leg). This information will be analyzed in conjunction with their breast cancer treatment history and lymphedema measurements. Participants were separated into two different cohorts for analysis, Cohort 1 being those who received an mRNA vaccine for their primary vaccination series (two doses of Moderna or Pfizer) and Cohort 2 being those who received a non-mRNA vaccination for their primary vaccination series (one dose of Johnson \& Johnson).

Other: Survey

Interventions

SurveyOTHER

Patients in all groups will complete surveys about their experience with the vaccination and any side effects they may have experienced.

Vaccinated Breast Cancer Patients [mRNA vaccine - Moderna, Pfizer]Vaccinated Breast Cancer Patients [non-mRNA vaccine - Johnson & Johnson]

Eligibility Criteria

Age18 Years+
Sexfemale
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)
Sampling MethodNon-Probability Sample
Study Population

Women with a history of breast cancer

You may qualify if:

  • Female patients who are
  • ≥18 years of age and have a
  • History of breast cancer For the MGH site, patients must have
  • Received some breast cancer treatment at MGH or its affiliates
  • Received perometry measurements to measure arm volume at MGH

You may not qualify if:

  • None

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Massachusetts General Hospital Cancer Center

Boston, Massachusetts, 02114, United States

Location

Related Publications (1)

  • Juhel BC, Brunelle CL, Bernstein MC, Smith LH, Jung AW, Ababneh HS, Hausman EK, Bucci LK, Bernstein T, Naoum GE, Taghian AG. Side effects of COVID-19 vaccinations in patients treated for breast cancer. Clin Exp Med. 2023 Nov;23(7):3671-3680. doi: 10.1007/s10238-023-01050-z. Epub 2023 Apr 8.

MeSH Terms

Conditions

Breast Cancer LymphedemaCOVID-19Breast NeoplasmsLymphadenopathy

Interventions

Surveys and Questionnaires

Condition Hierarchy (Ancestors)

LymphedemaLymphatic DiseasesHemic and Lymphatic DiseasesPostoperative ComplicationsPathologic ProcessesPathological Conditions, Signs and SymptomsPneumonia, ViralPneumoniaRespiratory Tract InfectionsInfectionsVirus DiseasesCoronavirus InfectionsCoronaviridae InfectionsNidovirales InfectionsRNA Virus InfectionsLung DiseasesRespiratory Tract DiseasesNeoplasms by SiteNeoplasmsBreast DiseasesSkin DiseasesSkin and Connective Tissue Diseases

Intervention Hierarchy (Ancestors)

Data CollectionEpidemiologic MethodsInvestigative TechniquesHealth Care Evaluation MechanismsQuality of Health CareHealth Care Quality, Access, and EvaluationPublic HealthEnvironment and Public Health

Limitations and Caveats

It is difficult to determine the exact response rate as surveys were sent when many patients hadn't yet received the vaccine; recall bias may have played a role. Questions regarding LN swelling relied on self-report. The surveys do not include questions regarding the severity of the side effects reported; therefore, conclusions about severity cannot be drawn. Methodological limitations prevent statistical comparisons with studies of the general population.

Results Point of Contact

Title
Associate Director, Lymphedema Research Program
Organization
Massachusetts General Hospital

Study Officials

  • Alphonse G Taghian, MD, PhD

    Massachusetts General Hospital

    PRINCIPAL INVESTIGATOR

Publication Agreements

PI is Sponsor Employee
No
Restrictive Agreement
No

Study Design

Study Type
observational
Observational Model
COHORT
Time Perspective
PROSPECTIVE
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Director, Lymphedema Research Program

Study Record Dates

First Submitted

May 2, 2021

First Posted

May 4, 2021

Study Start

May 7, 2021

Primary Completion

March 17, 2023

Study Completion

March 17, 2023

Last Updated

January 6, 2026

Results First Posted

January 6, 2026

Record last verified: 2025-10

Data Sharing

IPD Sharing
Will not share

Locations