Related Experiment Video
Updated: Oct 4, 2025

Non-Destructive Evaluation of Regional Cell Density Within Tumor Aggregates Following Drug Treatment
Published on: June 21, 2022
Marginal Corneal Infiltration Following Treatment for Metastatic Breast Cancer with Triple Chemotherapy of
Ghyath Kafa1, Mania Horani2, Fayyaz Musa1
1Rochdale Infirmary, Northern Care Alliance NHS Group, Manchester, UK.
Purpose:
To report a case of bilateral marginal corneal infiltration upon treatment with trastuzumab, pertuzumab, and docetaxel via novel proposed mechanisms.
Case Description:
A patient, diagnosed with metastatic breast cancer and positive for human epidermal growth factor receptor 2 (HER2) with high Ki67, presented with bilateral severe marginal corneal infiltration upon undergoing first cycle of triple chemotherapy: trastuzumab, pertuzumab, and docetaxel. Treatment with topical corticosteroids and antibiotics was unsuccessful and was replaced by allogeneic serum eye drops (SED). The case improved significantly 10 days upon starting allogeneic SED.
Conclusions:
We propose that trastuzumab, pertuzumab, and docetaxel suppress HER2 and Ki67 in the cornea and lacrimal gland. To the best of our knowledge, our report is the first to highlight the potential impact of this triple chemotherapy on the lacrimal gland and cornea and the first to highlight the proposed role of Ki67 suppression in damaging corneal integrity.

