Synchronous primary squamous lung cancers: long disease control after multimodal therapy, then Stage IVA lung recurrence

Patient Info: Anonymized, Male, 60s | Stage IV

Biomarkers: Squamous lung cancers with PD-L1 20% and no driver mutation detected; P40/P63 markers supported squamous type.

Metastatic Site: bilateral lung metastases at recurrence

As of November 2025, the patient had achieved 72 months of progression-free survival and remained alive at 75 months, but had developed Stage IVA recurrent pulmonary squamous cell carcinoma with bilateral lung metastases and had restarted systemic therapy.

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Recurrent breast cancer complicated by T-DXd-associated dermatomyositis and interstitial lung disease

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

Biomarkers: Initial tumor had weak ER/AR, PR-negative, HER2 0. Recurrence became ER/PR/AR-negative, HER2-low, PD-L1 CPS ~30.

The cancer progressed after adjuvant therapy and again after 6 cycles of gemcitabine/carboplatin. Trastuzumab deruxtecan was followed by dermatomyositis features and interstitial pneumonia, with symptoms worsening despite glucocorticoid treatment after continued exposure.

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HER2-positive breast cancer: brain recurrence, T-DXd liver injury, and later progression

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

Biomarkers: HER2-positive; hormone receptor-negative; grade 3 infiltrative breast carcinoma

Metastatic Site: brain; thoracic lymph nodes

As of October 2025, the patient had developed brain and thoracic nodal recurrence after HER2-directed treatment, experienced T-DXd-associated liver injury, progressed after later paclitaxel/trastuzumab, and died at home in December 2024 under palliative care.

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Four EGFR-Mutated Lung Cancers That Changed Form After Osimertinib

Patient Info: Anonymized, female, 50s

Biomarkers: EGFR exon 19 deletion; TP53 p.D259V

The cancer progressed after second-line treatment and later topotecan, and she died 2 months after topotecan ended.

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Four EGFR-Mutated Lung Cancers That Changed Form After Osimertinib — Case 2

Patient Info: Anonymized, female, 60s

Biomarkers: EGFR exon 19 deletion; TP53 p.R110P; acquired MET amplification

The disease progressed after combined targeted therapy, and she died after 7 months of carboplatin, etoposide, and atezolizumab.

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Four EGFR-Mutated Lung Cancers That Changed Form After Osimertinib — Case 4

Patient Info: Anonymized, female, 70+

Biomarkers: EGFR exon 19 deletion; TP53 p.L201fs

She died 3 months after starting carboplatin and pemetrexed for the transformed cancer.

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

Patient Info: Paul Forgette, Male, 60s | Stage IV

Biomarkers: HER2-positive; triple-positive breast cancer; CHEK2 mutation

Metastatic Site: Bones; lymph nodes

By October 2025, 9 months after starting Enhertu, Paul’s Stage IV HER2-positive male breast cancer was described as dormant, not cured, with continued City of Hope care and integrative support.

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Metastasizing ameloblastoma involving lung: initially treated as squamous lung cancer

Patient Info: Anonymized, Male, 40s

Biomarkers: Final tumor had AKT1 mutation and BRAF -negative status. Initial testing found no common actionable lung-cancer drivers.

As of October 2025, final pathology had changed the diagnosis from suspected squamous lung cancer to metastasizing ameloblastoma involving the lung, and the patient was under specialist head-and-neck and thoracic follow-up.

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HER2-positive Stage IV breast cancer: T-DM1 extravasation wound healed after multidisciplinary care

Patient Info: Anonymized, Female, Under 40 | Stage IV

Biomarkers: ER 90% positive; PR 70% positive; HER2 IHC 3+

Metastatic Site: pelvis

As of October 2025, the T-DM1 extravasation wound had almost fully healed within about 4 weeks, and the patient continued adjuvant T-DM1 through a port; longer cancer-control status was not described.

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Extensive-stage small-cell lung cancer with serplulimab-associated diabetes: care ongoing

Patient Info: Anonymized, Male, 60s | Stage IV

Biomarkers: Tumor biomarkers not reported. Diabetes workup after immunotherapy: autoantibodies negative, C-peptide very low.

After 11 days in the hospital, diabetic ketoacidosis was controlled; he continued insulin therapy with good glucose control and resumed serplulimab plus levothyroxine.

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Extensive-stage small-cell lung cancer with serplulimab-associated diabetes

Patient Info: Anonymized, Male, 70+ | Stage IV

Biomarkers: Tumor biomarkers not reported. Diabetes autoantibodies were negative, C-peptide was low, and hypothyroidism labs were severe.

After 10 days of hospitalization, diabetic ketoacidosis was controlled; he was discharged on insulin therapy and resumed serplulimab immunotherapy.

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Two Lung Cancer Patients Who Developed Bullous Pemphigoid During Pembrolizumab — Case 1

Patient Info: Anonymized, male, 70+

Biomarkers: PD-L1 TPS 5%

At the last follow-up, he was alive and continuing chemotherapy after later cancer progression, with no recurrence of bullous pemphigoid.

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Stage IV lung adenocarcinoma with paraneoplastic nephrotic syndrome during pembrolizumab therapy

Patient Info: Anonymized, Male, 60s | Stage IV

Biomarkers: PD-L1 tumor proportion score >50% by Roche SP263 assay; KRAS exon 3 mutation; NGS/FISH did not identify targets for first-line targeted therapy

Metastatic Site: brain, bone

Pembrolizumab produced partial response and improved nephrotic-syndrome parameters, but bone metastases progressed in September 2022 and the right upper-lobe target lesion progressed 2 months later, leading to carboplatin plus pemetrexed.

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Stage IVA right lung squamous cell carcinoma: partial response complicated by camrelizumab-related pneumonitis and pulmonary bullae

Patient Info: Anonymized, Male, 70+ | Stage IV

Biomarkers: Squamous lung cancer marker profile: P40/CK5/6 positive, TTF-1/Napsin A negative. CEA/CYFRA tumor markers were elevated. PD-L1 not reported.

Metastatic Site: suspected pleural involvement / right pleural effusion

The cancer had a partial response to albumin-bound paclitaxel, carboplatin, and camrelizumab; camrelizumab was stopped after suspected immune-related pneumonitis, pulmonary embolism, and reversible pulmonary bullae, which improved after methylprednisolone was resumed.

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Aggressive SMARCA4-deficient gastric cancer with rapid liver metastases after surgery

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

Biomarkers: SMARCA4 loss; SMARCA4 frameshift mutation

Metastatic Site: liver

Multiple liver metastases appeared within 1 week after surgery. She received 1 chemotherapy cycle but could not continue because of poor condition and was transferred for hospice care.

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HER2-positive invasive lobular breast cancer in a transgender man: disease-free after multimodality care

Patient Info: Anonymized, transgender man, 70+ | Stage III

Biomarkers: HER2-positive invasive lobular breast cancer, ER/PR negative

Nearly 2 years after diagnosis, he remained disease-free while continuing survivorship care and counseling after discontinuing testosterone therapy.

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Extensive-stage small-cell lung cancer with immune-related diabetes and stable disease at 2 years

Patient Info: Anonymized, Female, 60s | Stage IV

Biomarkers: Tumor PD-L1 not reported. Immune-related diabetes showed very low C-peptide and negative diabetes autoantibodies; thyroiditis also occurred.

Metastatic Site: pancreas; pleura/pleural effusion; mediastinal lymph…

Two years after the SCLC diagnosis, she was alive with stable oncologic disease after later brain metastases were treated with whole-brain radiotherapy, and she remained insulin-dependent.

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Small-cell lung cancer with anti-NMDAR encephalitis: neurologic recovery and cancer care ongoing

Patient Info: Anonymized, Male, 70+

Biomarkers: Anti-NMDAR antibodies positive in cerebrospinal fluid; tumor molecular markers not reported

He recovered without significant neurologic sequelae and had no recurrence of neuropsychiatric symptoms; SCLC treatment with carboplatin and paclitaxel began after discharge, and cancer remission status was not documented.

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Metastatic lung adenocarcinoma with brain and iliac bone response to chemoimmunotherapy

Patient Info: Anonymized, Male, 60s | Stage IV

Biomarkers: PD-L1-negative; no EGFR, ALK, ROS1, RET, KRAS, BRAF, MET, HER2, or NTRK alteration detected; TP53 mutation found.

Metastatic Site: left iliac bone, brain

Brain metastases achieved complete remission without cranial irradiation, and lung, bone, and brain lesions remained stable at last follow-up, with PFS of 35 months and OS exceeding 40 months.

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Stage IVA lung cancer with small-cell and adenocarcinoma components: mixed response before infection halted treatment

Patient Info: Anonymized, Male, 70+ | Stage IV

Biomarkers: PD-L1 <1%

Metastatic Site: bone (C2, T10, sacral vertebrae); malignant pleural…

The lung cancer showed mixed responses, with right-lung small-cell progression after chemotherapy/immunotherapy and later treatment interruption because of severe lung infection and respiratory failure.

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Metastatic lung adenocarcinoma with HER2 V659E/amplification responding to trastuzumab deruxtecan

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

Biomarkers: Initial lung testing showed no EGFR/ALK/ROS1 and PD-L1 TPS 3%. Later biopsy found HER2 V659E plus HER2 amplification.

Metastatic Site: liver, bone, brain

As of September 2024, metastatic lung adenocarcinoma had a sustained partial response to trastuzumab deruxtecan after HER2 V659E mutation and HER2 amplification were identified.

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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.

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Stage IIIB non-squamous NSCLC on chemoimmunotherapy: alcohol-related hypertonic hyponatremia corrected during oncology follow-up

Patient Info: Anonymized, Male, 50s | Stage III

Biomarkers: Tumor biomarkers not reported. Severe hyponatremia workup showed high serum osmolality and ethanol level.

He remained under oncology follow-up for Stage IIIB non-squamous NSCLC while alcohol-related hypertonic hyponatremia improved after detoxification and alcohol cessation.

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HER2-positive node-positive breast cancer: mastectomy and adjuvant TCbHP

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

Biomarkers: HER2-positive breast cancer with ER/PR positivity, PD-L1 CPS 25

Adjuvant TCbHP was initiated after surgery, the first cycle was tolerated with supportive care, and regular monitoring was ongoing without evidence of distant recurrence or metastasis reported.

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