Antibody Therapy for Lung Cancer: 8 Real Stories

Stage IVA EGFR-mutant lung adenocarcinoma: clonal evolution, chemoimmunotherapy response, osimertinib rechallenge, and death after progression

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

Biomarkers: Markers changed over time: started with EGFR L747S/L858R; later MET-amplified, PD-L1 TPS 80%, high TMB clone; later EGFR reappeared.

Metastatic Site: pleura, peritoneal nodule, retroperitoneal lymph nodes

The patient died on 30 April 2025 after progression through multiple lines and infection related to treatment-associated myelosuppression.

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Synchronous Stage IA lung adenocarcinoma and grade 4 glioblastoma: lung nodule regressed during brain-cancer therapy

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

Biomarkers: Lung molecular biomarkers not reported; glioblastoma biomarker details not summarized in library fields

The Stage IA lung adenocarcinoma was monitored without lung-directed therapy and decreased from 18 mm to 9 mm while CNS-directed glioblastoma treatment continued; she remained alive with no lung cancer progression.

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KRAS G12C Stage IV lung adenocarcinoma with synchronous urothelial carcinoma and durable response

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

Biomarkers: Lung adenocarcinoma: KRAS ; PD-L1 TPS 5%. Urothelial carcinoma: GATA3-positive; CK7-positive; TTF1-negative.

Metastatic Site: homolateral pulmonary metastases and N2 lymph nodes…

After enfortumab vedotin, the urothelial carcinoma reached complete radiologic response and the lung cancer remained partially responding/stable; treatment was stopped after 16 months, and PET 2 months later showed complete metabolic response.

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Stage IVA EGFR-mutated lung adenocarcinoma with malignant pleural effusion: stable disease on ivonescimab plus pemetrexed

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

Biomarkers: EGFR exon 19 deletion persisted. Later pleural fluid had PD-L1 TPS 40% / CPS 41, low TMB

Metastatic Site: pleura / malignant pleural effusion

As of August 2025, Stage IVA EGFR-mutated lung adenocarcinoma with malignant pleural effusion was stable on ivonescimab plus pemetrexed after prior progression on gefitinib, almonertinib, and ivonescimab monotherapy.

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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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Recurrent lung adenocarcinoma with bevacizumab-associated glomerular microangiopathy

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

Biomarkers: No tumor molecular biomarkers reported. Kidney biopsy and complement/immune deposits supported bevacizumab-related kidney microangiopathy.

Metastatic Site: pleura

He was living with recurrent metastatic lung adenocarcinoma after pleural spread and had persistent renal dysfunction and severe proteinuria from bevacizumab-associated glomerular microangiopathy despite stopping bevacizumab.

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Stage IV EGFR Non-Small Cell Lung Cancer: Filipe's Patient Story

Patient Info: Filipe, Male, Under 40 | Stage IV

Biomarkers: EGFR exon 19 deletion

Metastatic Site: brain, bone, left lung, kidney

As of November 2024, Filipe was living with ongoing Stage IV EGFR exon 19-mutated lung cancer after initial response to osimertinib, later progression and current amivantamab plus chemotherapy.

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HER2-positive metastatic lung cancer treated with trastuzumab deruxtecan (Enhertu)

Patient Info: Anonymized, Female | Stage IV

Biomarkers: ERBB2/HER2 copy-number gain of at least 20 copies; TP53 C242fs; CDK12 copy-number gain; tumour mutational burden 3.2 mutations/Mb

Metastatic Site: lungs / multiple pulmonary nodules

Trastuzumab deruxtecan reduced the pulmonary nodules by more than 50% at 3 months and produced a documented response lasting 13.8 months.

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