Immunotherapy for Breast Cancer: 56 Real Stories

56 stories match breast cancer and immunotherapy. 51 of them mention chemotherapy.

Sonia, who was diagnosed with Breast CancerBreast Cancer

Breast Cancer: Sonia's Survivor Story

Patient Info: Sonia

She was declared cancer-free in May 2022 and no longer needs medication.

Our Cancer Stories
OutcomeCancer-Free / NED
Nathalie, who was diagnosed with Stage IV Breast CancerBreast Cancer

Stage IV Breast Cancer: Nathalie's Patient Story

Patient Info: Nathalie | Stage IV

Nathalie had been living with stage 4 breast cancer for more than three years and remained focused on time with her children.

Our Cancer Stories
OutcomeLiving With Cancer
Manisha, who was diagnosed with Breast CancerBreast Cancer

Breast Cancer: Manisha's Patient Story

Patient Info: Manisha

After changing hospitals and completing treatment, Manisha continued to worry about the cancer returning while focusing on her health and family.

Our Cancer Stories
OutcomeNot reported
Danielle, who was diagnosed with Stage II Breast CancerBreast Cancer

Stage II Breast Cancer: Danielle's Survivor Story

Patient Info: Danielle, Female, 60s | Stage II

Danielle was listed as cancer-free after treatment for Stage II breast cancer that included mastectomy, chemotherapy, 5 weeks of radiation, and immunotherapy.

Fondation ARC
OutcomeCancer-Free / NED
Stephanie, who was diagnosed with Stage II Invasive Ductal CarcinomaBreast Cancer

Stage II BRCA1 Invasive Ductal Carcinoma: Stephanie's Patient Story

Patient Info: Stephanie Hargis, Female, Under 40 | Stage II

Biomarkers: ER-negative; PR-negative; HER2-negative; BRCA1 mutation

Stephanie had Stage II triple-negative breast cancer with BRCA1 mutation, then a local recurrence in April 2023 without distant spread; after surgery, chemotherapy, Keytruda, radiation, and Lynparza, she remained in ongoing post-recurrence treatment.

BreastCancer.org (ES)
OutcomeCare Ongoing
Séverine, who was diagnosed with Breast CancerBreast Cancer

Breast Cancer: Séverine's Survivor Story

Patient Info: Séverine, Female

Séverine described being in remission for 1 year while continuing hormone therapy, after tumorectomy, 6 months of chemotherapy, 18 months of immunotherapy, and bilateral breast removal/reconstruction.

Fondation ARC
OutcomeCancer-Free / NED
Claritza, who was diagnosed with Stage III Breast CancerBreast Cancer

Stage III Breast Cancer: Claritza's Patient Story

Patient Info: Claritza, Female, 50s | Stage III

Claritza was living with Stage III breast cancer more than 3 years after diagnosis after her initial plan changed from lumpectomy, chemotherapy, and radiation therapy to immunotherapy and pain medication.

Our Cancer Stories
OutcomeCare Ongoing
Emilcen, who was diagnosed with Stage III Breast CancerBreast Cancer

Stage III Breast Cancer: Emilcen's Patient Story

Patient Info: Emilcen, Female, 50s | Stage III

Emilcen was still receiving treatment for Stage III breast cancer more than 3 years after diagnosis, after mastectomy, chemotherapy, radiation therapy, and immunotherapy.

Our Cancer Stories
OutcomeCare Ongoing
Eutha, who was diagnosed with Stage II Invasive Lobular CarcinomaBreast Cancer

Stage II HR-Positive Invasive Lobular Carcinoma: Eutha's Survivor Story

Patient Info: Eutha, Female | Stage II

Biomarkers: ER-positive; PR-positive; HER2-positive

Eutha completed clinical-trial immunotherapy, right mastectomy with lymph-node removal, chemotherapy, radiation and reconstruction for Stage II ER-positive, PR-positive, HER2-positive breast cancer, and returned to work and community life; no explicit NED/cancer-free status was provided.

Memorial Sloan Kettering
OutcomeSurvivorship / Surveillance
A patient, who was diagnosed with Stage II Breast CancerBreast Cancer

Stage IIA triple-negative neuroendocrine breast carcinoma with chemoimmunotherapy response

Patient Info: Anonymized, Female, 70+ | Stage II

Biomarkers: Triple-negative neuroendocrine breast carcinoma with PD-L1 CPS >=10, and reported germline BRCA1/2 mutation.

As of March 2025, 12 months after surgery, follow-up imaging and tumor-marker testing showed no local recurrence or distant metastasis, and she remained in good general condition.

PubMed Central
OutcomeCancer-Free / NED
A patient, who was diagnosed with Stage IV Breast CancerBreast Cancer

Stage IIB triple-negative metaplastic breast cancer with early metastatic recurrence: durable response to pembrolizumab-based therapy

Patient Info: Anonymized, Female, 50s | Stage IV

Biomarkers: Triple-negative metaplastic breast cancer with PD-L1 CPS 83.2, BRCA1/2 negative

Metastatic Site: lung, sternum

As of May 2026, she had more than 30 months of disease control after pembrolizumab-based therapy for early recurrent metastatic metaplastic breast cancer, with only mild residual sternal uptake and no disease progression.

PubMed Central
OutcomeResponding Well
Jes, who was diagnosed with Breast CancerBreast Cancer

Triple-Negative Breast Cancer: Jes's Survivor Story

Patient Info: Jes, Female

Biomarkers: ER-negative; PR-negative; HER2-negative

No evidence of disease after chemotherapy/immunotherapy and bilateral mastectomy; no positive lymph nodes were found, chemotherapy cleared the cancer, and radiation was not needed, though she continued to experience long-term treatment effects.

The Patient Story
OutcomeCancer-Free / NED
A patient, who was diagnosed with Breast CancerBreast Cancer

Triple-negative breast cancer diagnosed during pregnancy: remission

Patient Info: Anonymized, Female, Under 40

Biomarkers: ER-negative; PR-negative; HER2-negative

The patient remains in remission 30 months after surgery. Immune-related brachial plexopathy after treatment improved after steroids, IVIG, and plasmapheresis, with electrophysiologic resolution and near-complete strength and sensory recovery.

PubMed Central
OutcomeCancer-Free / NED
A patient, who was diagnosed with Stage III Breast CancerBreast Cancer

Stage IIIB triple-negative metaplastic breast cancer: urgent mastectomy and reconstruction after rapid progression on neoadjuvant therapy

Patient Info: Anonymized, Female, 40s | Stage III

Biomarkers: ER-negative; PR-negative; HER2-negative; nuclear grade 3

At 18-month follow-up, she was disease-free after urgent mastectomy, axillary dissection, flap/skin-graft reconstruction, resumed chemotherapy, and radiation for rapidly progressive triple-negative metaplastic breast cancer.

PubMed Central
OutcomeCancer-Free / NED
Sonja, who was diagnosed with Stage IV Breast CancerBreast Cancer

Stage IV HER2-Positive Breast Cancer: Sonja's Patient Story

Patient Info: Sonja Rideout, Female | Stage IV

Biomarkers: HER2-positive; Tempus testing later indicated immunotherapy as an option

Metastatic Site: Lungs; liver; bone: tailbone; thoracic lymph nodes

As of January 2026, Sonja was living with metastatic HER2-positive breast cancer after spread to lungs and liver, later tailbone and thoracic lymph nodes, and had moved to weekly carboplatin/gemcitabine plus monthly immunotherapy.

Susan G. Komen
OutcomeSetback / Progression
A patient, who was diagnosed with Stage III Breast CancerBreast Cancer

Stage 3 triple-negative breast cancer complicated by immunotherapy endocrine toxicity

Patient Info: Anonymized, Female, 40s | Stage III

Biomarkers: ER-negative; PgR-negative/PR-negative; HER2 0; Ki-67 70%; triple-negative breast cancer

After neoadjuvant therapy complicated by immune-related hypothyroidism, adrenal insufficiency, and suspected hypophysitis, surgery showed residual ypT1c ypN0 triple-negative disease. Pembrolizumab was stopped, adjuvant capecitabine was completed in June 2025, and endocrine replacement/follow-up continued.

PubMed Central
OutcomeCare Ongoing
A patient, who was diagnosed with Breast CancerBreast Cancer

Hormone receptor-positive breast cancer treated with pembrolizumab trial complicated by acquired lipodystrophy

Patient Info: Anonymized, Female, 40s

Biomarkers: HER2-negative breast cancer. Metabolic changes occurred during/after pembrolizumab.

As of December 2025, breast cancer treatment had included neoadjuvant chemotherapy/pembrolizumab, surgery, adjuvant pembrolizumab, and endocrine therapy; CT did not show recurrence during weight-loss evaluation, but she required ongoing metabolic care for pembrolizumab-associated acquired generalized lipodystrophy.

PubMed Central
OutcomeCare Ongoing
A patient, who was diagnosed with Breast AdenocarcinomaBreast Cancer

Breast cancer found during workup for progressive hearing loss and paraneoplastic cochleovestibulopathy

Patient Info: Anonymized, Female, 40s

Biomarkers: Breast cancer was ER ~100% and HER2 2+; CK/CK7/GATA3 supported breast origin. Neuronal autoantibodies were suspected but not identified.

As of December 2025, she remained on endocrine therapy, and serial chest CT at 1-year follow-up showed reduction in right axillary lymph-node size; hearing outcome after cochlear implantation was not assessable.

PubMed Central
OutcomeCare Ongoing
A patient, who was diagnosed with Stage III Breast CancerBreast Cancer

Triple-negative breast cancer with pathologic complete response after neoadjuvant chemoimmunotherapy complicated by immune toxicity

Patient Info: Anonymized, Female, 40s | Stage III

Biomarkers: ER-negative; PR-negative; HER2-negative

Left mastectomy on November 17 confirmed pathologic complete response, and 5-month follow-up showed no residual hepatic, dermatological, metabolic, or neurological sequelae from the treatment-related complications.

PubMed Central
OutcomeCancer-Free / NED
Jennifer, who was diagnosed with Stage II Breast CancerBreast Cancer

Stage II HR-Positive Breast Cancer: Jennifer's Survivor Story

Patient Info: Jennifer Njathi, Female, 40s | Stage II

Biomarkers: Triple-positive; ER-positive; PR-positive; HER2-positive

As of October 2025, Jennifer was more than 1 year past treatment for triple-positive Stage IIA breast cancer and had a recent clear MRI.

City of Hope
OutcomeCancer-Free / NED
A patient, who was diagnosed with Invasive Ductal CarcinomaBreast Cancer

Triple-negative node-positive breast cancer with complete pathologic response and benign nodal nevi

Patient Info: Anonymized, Female, 50s

Biomarkers: Triple-negative breast cancer; BRCA testing negative. Axillary melanocytic cells looked benign.

Pathology showed complete response in the breast, no residual breast carcinoma in the sampled specimen, and axillary nodal melanocytic proliferations interpreted as benign nodal nevi rather than metastatic melanoma or breast carcinoma.

PubMed Central
OutcomeCancer-Free / NED
A patient, who was diagnosed with Invasive Ductal CarcinomaBreast Cancer

Synchronous triple-negative breast cancer and rectal adenocarcinoma complicated by hepatitis B reactivation

Patient Info: Anonymized, Female, 50s

Biomarkers: Triple-negative breast cancer with pathogenic BRCA1 mutation; hepatitis B reactivation occurred during treatment.

At 3-year follow-up, she remained healthy and disease-free after treatment for synchronous triple-negative breast cancer and mid-rectal adenocarcinoma, with hepatitis B reactivation controlled on entecavir.

PubMed Central
OutcomeCancer-Free / NED
Lynn, who was diagnosed with Stage III Breast CancerBreast Cancer

Stage III Triple-Negative Breast Cancer: Lynn's Survivor Story

Patient Info: Lynn Leiro, Female, Under 40 | Stage III

Biomarkers: ER-negative; PR-negative; HER2-negative

Lynn achieved complete response after breast cancer treatment and remission from therapy-related acute lymphocytic leukemia after CAR T cell therapy and bone marrow transplant; as of July 2025, nearly 1 year post-transplant, she was doing better and getting stronger.

City of Hope
OutcomeCancer-Free / NED