Title:ICPi-Induced Graves' Disease with Pre-existing Autoimmune Thyroid Disorders: A Case Report and Literature Review
Volume: 26
Issue: 1
Author(s): Xinpan Wang, Doudou Chen, Yun Shi, Tao Yang and Xuqin Zheng*
Affiliation:
- Department of Endocrinology, The First Affiliated Hospital of Nanjing Medical University (Jiangsu Province Hospital),
Nanjing, China
Keywords:
Immune checkpoint inhibitor, Graves' disease, thyroid toxicity, autoimmune disease, autoantibody, hyperthyroidism.
Abstract:
Background: Immune Checkpoint Inhibitor (ICPi) therapy has revolutionized cancer
treatment but can lead to immune-related adverse events (irAE), including thyroid dysfunction.
The impact of ICPi on patients with pre-existing autoimmune thyroid diseases (PATD), particularly
the development of Graves' disease, remains poorly understood.
Case Presentation: We provide the first complete case of Graves' disease with ICPi therapy in a
patient who already had Hashimoto's thyroiditis. The patient, a 52-year-old male, was diagnosed
with lung adenocarcinoma and received Atezolizumab. Clinical evaluation revealed hyperthyroidism,
confirmed by elevated thyroid hormones and autoantibodies (TRAb and TSAb). The patient
was managed with methimazole and demonstrated a transient hyperthyroid phase followed
by persistent hypothyroidism. Only 16 confirmed cases of Graves' disease induced by ICPi were
reported. We conducted a review to investigate the clinical characteristics, risk factors, and prognosis
trends associated with ICPi-induced Graves disease in PTAD patients. Additionally, changes
in thyroid function and autoantibodies during and after ICPi treatment are examined.
Conclusion: This case underscores the importance of monitoring thyroid function and autoantibodies
in patients with PATD undergoing ICPi therapy. The findings suggest distinct differences
in the humoral immune response between ICPi-induced and spontaneous Graves' disease, necessitating
further research into autoantibody dynamics and their relationship with cellular immunity in
these patients.