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  • FDA approves "glowing...

FDA approves "glowing tumor" imaging agent Cytalux to aid lung cancer surgery

Dr. Kamal Kant KohliWritten by Dr. Kamal Kant Kohli Published On 2022-12-20T09:00:16+05:30  |  Updated On 2022-12-20T13:43:21+05:30
FDA approves glowing tumor imaging agent Cytalux to aid lung cancer surgery

The U.S. Food and Drug Administration (FDA) has approved the targeted imaging agent Cytalux (pafolacianine) for use in lung cancer surgery. This injectable diagnostic binds to cancerous tissue and glows when stimulated by near-infrared light, making it easier for surgeons to remove tumors completely while sparing healthy tissue. Thoracic surgeons at the Center for Precision Surgery in...

The U.S. Food and Drug Administration (FDA) has approved the targeted imaging agent Cytalux (pafolacianine) for use in lung cancer surgery. This injectable diagnostic binds to cancerous tissue and glows when stimulated by near-infrared light, making it easier for surgeons to remove tumors completely while sparing healthy tissue.

Thoracic surgeons at the Center for Precision Surgery in the Abramson Cancer Center at the University of Pennsylvania led the clinical trials evaluating the imaging agent in lung cancer, in a partnership with the Indiana-based manufacturer, On Target Laboratories. This is the second approval for Cytalux, following an approval last year for ovarian cancer surgery, also based on clinical studies in which Penn Medicine led one of the largest sites in country.

"The availability of this imaging agent has major implications for thoracic surgery and lung cancer patients, who make up the vast majority of thoracic surgery cases," said Sunil Singhal, MD, the William Maul Measey Professor in Surgical Research and director of the Center for Precision Surgery at Penn Medicine. "It will allow us to do less invasive operations, find additional cancer, and more accurately detect any remaining cancer, potentially saving patients from reoperation or additional therapy."

More than 130,000 Americans die of lung cancer each year, making lung cancer the leading cause of cancer mortality in the country. Lung cancer mortality is high largely because it tends to be diagnosed at later stages when the tumor has begun to spread. About 20 percent of cases, or roughly 50,000 per year, are localized enough to be treated surgically, in the hope of a cure. But even with surgery there is a high chance of recurrence, which implies that standard visual and tactile inspection often fails to detect all cancerous tissue.

Cytalux was designed to enhance this detection rate in surgeries where the tumor is removed. The imaging drug is infused into the patient pre-operatively, and binds to a surface protein called the folate receptor alpha (FRα), which is expressed at abnormally high levels in lung tumors and several other types of tumor. The imaging agent is designed so that, under illumination with infrared light, it will produce a glowing emission that can be detected by a special infrared camera. The camera outputs to a real-time display, enhancing the surgeon's ability to see probable cancerous tissue. This type of technology is known as intraoperative molecular imaging.

The randomized Phase III ELUCIDATE trial (NCT04241315), completed last year, showed that the imaging agent helped detect cancer that would have been missed by conventional techniques in more than 50 percent of patients with confirmed or suspected lung cancer. Singhal was the principal investigator of the multi-site study and presented the results at the American Association for Thoracic Surgery Annual Meeting in May 2022.

Penn Medicine has led the field of intraoperative imaging, driving advancements to bring this imaging agent to patients. As a pioneer in the field of tumor imaging, Singhal has been working with Cytalux for nearly a decade, spearheading efforts to study it in hundreds of surgeries, in both clinical trials and exploratory studies, for ovarian and lung cancer. The Center for Precision Surgery and its affiliated Penn Medicine researchers have also developed several other innovative technologies for imaging brain, breast, head and neck, and urinary tract cancers.

"Today's approval gives thoracic surgeons a new tool to accurately detect and remove cancer tissue, while sparing healthy lung tissue," Singhal said. "With intraoperative molecular imaging, our ultimate goal is to improve patient care through more precise surgery." 

lung cancer lung cancer surgery cancer surgery Food and Drug Administration FDA Cytalux tumor 
Dr. Kamal Kant Kohli
Dr. Kamal Kant Kohli

    Dr Kamal Kant Kohli-MBBS, DTCD- a chest specialist with more than 30 years of practice and a flair for writing clinical articles, Dr Kamal Kant Kohli joined Medical Dialogues as a Chief Editor of Medical News. Besides writing articles, as an editor, he proofreads and verifies all the medical content published on Medical Dialogues including those coming from journals, studies,medical conferences,guidelines etc. Before Joining Medical Dialogues, he has served at important positions in the medical industry in India including as the Hony. Secretary of the Delhi Medical Association as well as the chairman of Anti-Quackery Committee in Delhi and worked with other Medical Councils in India. Email: editorial@medicaldialogues.in. Contact no. 011-43720751

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