FDA Clears New Immune Response Claim for the CryoValve(R) SG Pulmonary Human Heart Valve

/PRNewswire-FirstCall/ -- CryoLife, Inc. (NYSE:CRY) , a biomaterials, medical device and tissue processing company, announced today that the U.S. Food and Drug Administration (FDA) has cleared a new claim for the CryoValve(R) SG pulmonary human heart valve. The new labeling claim relates to reducing a component of the immune response in recipients of the CryoValve SG.

CryoValve SG pulmonary human heart valve is processed with the Company's proprietary SynerGraft(R) technology, which is designed to remove allogeneic donor cells and cellular remnants from the valve without compromising the integrity of the underlying collagen matrix.

The new claim relates to the fact that data from three company-sponsored clinical studies and a comprehensive review of the scientific literature on allograft heart valves shows that implantation of the CryoValve SG reduces the risk of inducing HLA class I and class II alloantibodies, based on Panel Reactive Antibody (PRA) measured at up to one year, compared to the standard- processed pulmonary human heart valve. The effect of reduced alloantibodies, however, on the long-term durability, or long-term resistance to rejection by the patient, of the CryoValve SG has not yet been clinically proven. The company has documented the implantation of more than 1,800 CryoValve SG pulmonary human heart valves.

The CryoValve SG pulmonary human heart valve is indicated for the replacement of diseased, damaged, malformed or malfunctioning native or prosthetic pulmonary valves. The valve can be used in conjunction with right ventricular outflow tract reconstruction procedures (RVOT), commonly performed in children with congenital heart defects. In addition, the valve can be used for pulmonary valve replacement during the Ross Procedure, an operation in which a patient's defective aortic valve is removed and replaced with his or her own pulmonary valve. The CryoValve SG is then surgically implanted in place of the removed native pulmonary valve.

A PRA screen is used to identify allosensitized patients prior to organ transplantation. An elevated PRA level, indicating pretransplant alloantibodies, increases the risk of organ transplant rejection and patient mortality. In addition, high and prolonged PRA levels may prevent or delay transplantation until a suitable crossmatch-compatible donor is identified.

"A major objective of our research and development is to reduce and ultimately eliminate the risk of an immune response for patients, and we are making great strides toward achieving that goal," said Steven G. Anderson, president and chief executive officer of CryoLife. "This new claim is important because a subset of patients receiving an allograft heart valve is likely to eventually require an organ transplant. Demonstration of reduced alloantibody levels with the CryoValve SG can be a key consideration for cardiac surgeons when replacing the pulmonary valve. Working with the FDA, we will monitor the long-term clinical outcomes over the coming years to assess what impact the SynerGraft process has on valve durability."

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CeloNova BioSciences Receives FDA Market Approval for Embozene(TM) Color-Advanced Microspheres Embolization Platform

/PRNewswire/ -- CeloNova BioSciences, Inc., announced December 16 that it has received 510(k) marketing clearance from the U.S. Food and Drug Administration (FDA) for Embozene(TM) Color-Advanced Microspheres which are indicated for the treatment of hypervascularized tumors (tumors with a large number of blood vessels in many locations) and arteriovenous malformations (defects in the circulatory system). U.S. commercial sales of Embozene(TM) Microspheres will begin immediately.

Embozene(TM) Microspheres are the first and only microspheres to be color- enhanced with a different color for each size for increased procedural safety, efficiency and visibility. They are also available in a wider range of sizes than any other spherical embolic on the market. They are available in 40 micrometers, 100 micrometers, 250 micrometers, 400 micrometers, 500 micrometers, 700 micrometers, and 900 micrometers sizes in 1 ml and 2 ml pre-filled syringes and vials. CeloNova plans to submit a supplemental 510(k) to the FDA to add three additional sizes, 75 micrometers, 1100 micrometers and 1300 micrometers, for a total of ten sizes including the smallest and the largest microspheres available for endovascular therapy. CeloNova is the only Company that provides this complete range of products.

CeloNova's Embozene(TM) Microspheres consist of a hydrogel core and an exterior shell made from Polyzene(R)-F, CeloNova's proprietary polymer which is known to be anti-inflammatory and bacterial-resistant. Four design features distinguish Embozene(TM) Microspheres from other spherical embolics: biocompatibility, precise calibration, stable suspension, and structural stability. Embozene(TM) Microspheres are precisely calibrated, they retain their shape after passing through a catheter, and they can stay in suspension for an extended time. The unique color enhancement of the microspheres and finely calibrated sizes make selection easy, efficient, and precise for the operator. The result is an embolic microsphere that provides accurate and complete vessel occlusion.

Embolization is a minimally invasive procedure used to control or prevent abnormal bleeding, to shrink tumors by blocking the blood vessels that supply them, and to block off blood vessel malformations. Physicians use enhanced imaging techniques to visualize the blood vessel, then insert and advance a catheter to the treatment site. The embolic agent is then released into the catheter and positioned within the blood vessel or malformation to block the target vessel permanently.

"Embozene Microspheres are an innovative advance in embolic technology that has been well received outside the U.S.," said John C. Lipman, MD, FSIR, Founder and CEO of the Atlanta Interventional Institute and Director of the Center for Image-Guided Medicine at Emory-Adventist Hospital Atlanta. "Intuitively, a polymer that is anti-inflammatory and that provides more finely calibrated bead sizes, shape integrity, prolonged suspension, and has a unique color-coded selection system that makes for more efficient procedures, will appeal to physicians as well as patients. Embozene(TM) Microspheres maintain suspension better than any other embolic I've seen," said Dr. Lipman. "I'm looking forward to using this therapy in my practice."

"From the outset, we took a different approach to developing our Embozene(TM) Microspheres by asking physicians and medical scientists for the qualities and characteristics that the ideal embolic device should have," said Thomas A. Gordy, President and Chief Executive Officer, CeloNova BioSciences, Inc. "Then, we engineered Embozene(TM) Microspheres to have those properties, which are made even better with Polyzene(R)-F, our proprietary polymer. Polyzene(R)-F helps make our leading-edge technology better."

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