HNF1B and Complex Cyst of Kidney: However, negative genetic testing results for <i>PKD1</i> and <i>PKD2</i> led to a 43-gene cystic kidney sequencing panel which identified a deletion encompassing the entire <i>HNF1B</i> gene.<h4>Intervention</h4>To alleviate discomfort caused by the kidney cysts, ultrasound-guided aspiration and foam sclerotherapy were performed.