Adrenal gland – GAD65 negative adrenocortical adenoma

Adrenal gland – GAD65 negative pheochromocytoma

Breast – GAD65 negative invasive breast cancer of no special type (NST)

Breast – GAD65 negative invasive lobular breast cancer

Colon – GAD65 negative colorectal adenocarcinoma

Esophagus – GAD65 negative adenocarcinoma

Esophagus – GAD65 negative squamous cell carcinoma

Ileum – GAD65 negative neuroendocrine tumor

Kidney – GAD65 negative clear cell carcinoma

Kidney – GAD65 negative papillary renal cell carcinoma

Liver – GAD65 negative cholangiocellular carcinoma

Liver – GAD65 negative hepatocellular carcinoma

Lung – GAD65 negative malignant mesothelioma (epitheloid)

Lung – GAD65 negative neuroendocrine tumor

Lymph node – GAD65 negative diffuse large B-cell lymphoma

Ovary – GAD65 negative granulosa cell tumor

Ovary – GAD65 negative serous high-grade carcinoma

Ovary – GAD65 negative serous high-grade carcinoma

Pancreas – GAD65 negative neuroendocrine tumor

Pancreas – GAD65 negative neuroendocrine tumor

Pancreas – Neuroendocrine tumor showing weak to moderate GAD65 staining of a fraction of tumor cells

Pancreas – Neuroendocrine tumor with strong GAD65 immunostaining of tumor cells (2)

Pancreas – Neuroendocrine tumor with strong GAD65 immunostaining of tumor cells

Pancreas – Neuroendocrine tumor with strong GAD65 positivity of most tumor cells

Pharynx – GAD65 negative squamous cell carcinoma

Prostate – GAD65 negative adenocarcinoma (Gleason 3+3=6)

Salivary gland – GAD65 negative Warthin tumor

Skin – GAD65 negative Merkel cell carcinoma

Stomach – GAD65 negative gastric adenocarcinoma

Stomach – GAD65 negative gastrointestinal stromal tumor (GIST)

Testis – GAD65 negative embryonal carcinoma

Testis – GAD65 negative Leydig cell tumor

Testis – GAD65 negative seminoma

Testis – GAD65 negative seminoma

Thyroid – GAD65 negative papillary carcinoma

Urinary bladder – GAD65 negative muscle-invasive urothelial carcinoma

Urinary bladder – GAD65 negative small cell carcinoma

Uterus, cervix – GAD65 negative squamous cell carcinoma