University of California San Francisco

About Us

About Us

Lung cancer is the leading cause of cancer-related deaths worldwide. Even early-stage patients who have undergone surgical “cure” experience recurrence and death up to 40-50% of the time within 5 years. Currently, few of these patients will receive therapy after surgical resection of their early-stage disease, as conventional post-surgical chemotherapy has failed in this respect.

What is needed is a way to identify patients with early-stage tumors at high-risk of lung cancer recurrence and lung-cancer specific mortality. 

In prior years, Dr. Kratz’s research group designed and validated a clinically relevant assay to identify early-stage patients at high-risk of recurrence and death after surgical resection. Dr. Kratz’s lab now focuses on the genetic and immunological mechanisms that make a subset of these early-stage lung cancers “high-risk”. 

In Dr. Kratz’s lab, both the genetic as well as the immunological landscapes of early-stage high-risk tumors are currently being investigated. Using the latest DNA / RNA sequencing and gene expression techniques combined with a bioinformatics-driven systems biology approach, the lab is comparing the different features of low- vs. high-risk early-stage lung cancer in order to gain a better understanding of the genetic nature of high-risk stage I lung cancer. The lab also utilizes cutting-edge immunological profiling techniques to investigate immune responses generated by certain patients that nurture high-risk disease. 

We are focusing on early-stage thoracic malignancies for three reasons.

  1. Early- stage tumors are high-yield research subjects as they are more homogenous and less complex than late-stage tumors.
  2. Patients with early-stage but high-risk disease are more likely to be cured by targeted interventions than patients with regional or metastatic late-stage disease.
  3. Despite their deadly nature, very few clinician-scientists target early-stage thoracic malignancies. Most interventions and clinical trials are designed for patients with late-stage disease, leaving a very large underserved population of patients with early-stage, yet deadly disease.

Dr. Kratz’s lab is using their new research discoveries to identify potential genetic and immunological targets of novel interventions such as biomarker-directed therapies, novel drugs and new immune-based therapies. Identification of these biomarkers and targets will allow the delivery of post-surgical interventions that patients with high-risk early-stage thoracic malignancies urgently need.

Johannes R. Kratz, MD

Associate Professor of Surgery
Division of Cardiothoracic Surgery
Van Auken Endowed Chair in Thoracic Oncology
Director, Minimally Invasive and Robotic Thoracic Surgery
Director, Thoracic Surgery Residency Program
Medical Director of Robotic Surgery, UCSF Health

Johannes Kratz MD