Systemic Fibrosis
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This document provides information about gadolinium systemic fibrosis (NSF), a condition caused by exposure to gadolinium-based contrast agents used in MRI scans. It discusses the symptoms of NSF, risk factors, manufacturers of gadolinium solutions, litigation related to NSF, and guidelines for diagnosing and selecting potential NSF cases.
Systemic Fibrosis
- 1. Gadolinium SyStemic FibroSiS Organized by The Lawyers aT anapOL schwarTz. © 2009 aLL righTs reserved. cOnTacT Lawyer: barry hiLL, esquire caLL: (215) 735-0364 emaiL: bhiLL@anapOLschwarTz.cOm read mOre infOrmaTiOn OnLine aT: www.anapolschwartz.com DISCLAIMER: This information is not intended to replace the advice of a doctor. Please use this information to help in your conversation with your doctor. This is general background information and should not be followed as medical advice. Please consult your doctor regarding all medical questions and for all medical treatment.
- 2. cOnTrasT sOLuTiOns basics CT and MRI distinguished • CT uses a combination of x-rays and computer technology. • MRI uses a combination of a strong magnetic field, radiofrequen- cy, and computer technology. Radiographic Contrast Material • Can be called contrast material, agent, medium, or solution. • An internally-administered substance that has a different opacity from soft tissue on radiography, MRI, or CT. • Contrast is used to better visualize areas where blood flow exists. Distinction between MRI contrast and CT contrast • MRI contrast is a gadolinium-based solution which will show blood vessels and blood flow. • CT contrast is an iodine-based solution that will show areas of blood vessels and blood flow. • Probably not a good case if person had only CT. • Enhancement solutions used from CT ordinarily do not contain gadolinium. • May be rare exceptions – if person has NSF, keep looking GADoLInIuM SySTEMIC FIbRoSIS Prepared by Lawyers at Anapol Schwartz. © 2009 All Rights Reserved. Read more information online at www.anapolschwartz.com. 2
- 3. reasOns fOr using cOnTrasT wiTh mri • Increased distinction between normal and • Sometimes better able to identify lesion in pathologic tissues question. • Some things that are not clear on unen- • Can show physiologic and functional infor- hanced images become obvious with con- mation in addition to lesion delineation. trast. • Imaging of arteries and veins with contrast • Increased MRI sensitivity. enhanced angiography (CE MRA). nOn-cOnTrasT mr angiOgraphy From Toshiba Medical Systems: “Based on a growing body of evidence that links gadolinium-based contrast agents with Nephrogenic Systemic Fibrosis/Nephrogenic Fibrosing Dermopathy (NSF/NFD), there is a clear need for rapid, ultra-clear MRA without the use of contrast agents.” “In 1998, Toshiba pioneered non-contrast MR imaging. Now, with over 8 years of clinical experience, Toshiba’s Vantage systems are the only systems available with a complete suite of contrast-free MRA techniques.” GADoLInIuM SySTEMIC FIbRoSIS Prepared by Lawyers at Anapol Schwartz. © 2009 All Rights Reserved. Read more information online at www.anapolschwartz.com.
- 4. fda aLerT (6/2006, updated 12/2006 and 5/23/2007) Information for Healthcare Professionals Gadolinium-Based Contrast Agents for Magnetic Resonance Imaging Boxed Warning: • Exposure increases the risk for NSF in patients with: • acute or chronic severe renal insufficiency • acute renal insufficiency of any severity due to the hepato- renal syndrome or in the perioperative liver transplantation period. • NSF is a debilitating and sometimes fatal disease affecting the skin, muscle, and internal organs. • Avoid use unless the diagnostic information is essential and not available without contrast. • Screen all patients for renal dysfunction. • do not exceed recommended dose in product labeling. • Allow time for elimination before readministration. nephrogenic Systemic Fibrosis • First described in 1997 in patients with end stage renal disease • Characterized by scleroderma-like skin changes that mainly affect the limbs and trunk. • Can progress to cause flexion contracture of joints. • Fibrotic changes may also affect other organs such as muscles, heart, liver and lungs. • The disease can be aggressive in some patients leading to seri- ous physical disability or death. • Old terminology: Nephrogenic Fibrosing Dermopathy (NFD). • Suggested new terminology: Gadolinium Fibrosing Dermopathy. GADoLInIuM SySTEMIC FIbRoSIS Prepared by Lawyers at Anapol Schwartz. © 2009 All Rights Reserved. Read more information online at www.anapolschwartz.com.
- 5. firsT pubLished repOrT Scleromyxoedema-like cutaneous disease in renal dialysis patients. Cowper et al. The Lancet 16 September 2000 Nephrogenic Fibrosing Dermopathy/Nephrogenic Systemic Fibrosis: Report of a New Case with Literature Review Daram SR. Amer J Kidn Dis. (oct. 200) 6;:7-79 People with NSF don’t know what the future holds, because doctors don’t know enough to tell them. nephrogenic Systemic Fibrosis • No consistently effective treatment. • Photophoresis might help but cost $8,000 per treatment every two weeks. • Disease too new for physicians to know how to treat it or to give a prognosis. • Some treatment like high-dose steroids can have fatal conse- quences. Time from gadolinium solution administration to NSF symptoms: Two days to six years reported in literature. GADoLInIuM SySTEMIC FIbRoSIS Prepared by Lawyers at Anapol Schwartz. © 2009 All Rights Reserved. Read more information online at www.anapolschwartz.com.
- 6. epidemiOLOgy • Affects both sexes equally • Age range reported from 8 to 87 years • Occurs worldwide in all races Causation: The cause of NFD remains unknown. All of our patients with NSF had been exposed to gado- diamide before their first sign of NSF. The median time from exposure to first medically recorded note of NSF was 25 days. In some cases, the delay was short and the link between exposure and NSF seemed obvious. How- ever, in others, NSF developed less dramatically, had a more insidious course, and was diagnosed later. Importantly, we have not observed a single case of NSF among patients who were not exposed to gadodiamide. Consequently, the odds ratio for acquir- ing NSF whne exposed is high and statistically highly significant in our material. gadOLinium • Gadolinium is a metal. • It is an element listed in periodic table of elements. • Found in the earth’s surface. • Not in human body naturally, • No sane or legal means of exposure other than through injection of a gadolinium-based contrast solution. • Poisonous. GADoLInIuM SySTEMIC FIbRoSIS Prepared by Lawyers at Anapol Schwartz. © 2009 All Rights Reserved. Read more information online at www.anapolschwartz.com. 6
- 7. When was this known? “It seems reasonable, however, to suggest caution in the use of any of these agents in patients with seriously impaired renal function in which circumstances the material is retained for a prolonged period.” Dawson P, Gadolinium Chelate MR Contrast Agents (Editorial) Clin Radiol (1994) 49:439-442. Gadolinium Metal chemical element: Gd ( granular ) Ultra pure quantities of the element Gadolinium (atomic number 64), ideal for element collectors of those conducting experiments/produc- ing alloys with pure Gadolinium metal. It has the highest thermal neu- tron capture cross-section of any known element. Gadolinium becomes superconductive below a critical temperature of 1.083 K. It is strongly magnetic at room temperature, and exhibits ferromagnetic properties be- low room temperature. Gadolinium metal is used as an emergency shut- down measure in some types of nuclear reactors. 5 grams: $10.00 10 grams: $20.00 Potentially hazardous chemicals require an adult signa- ture upon delivery. because gadolinium is poisonous, contrast solution manufacturers use chelate chemicals to prevent free gadolinium in the body. • Chelates work like insulation. • Transmetalation (insulation lost) occurs over time. • f clearance from body takes longer than normal, transmetalation can result in free gadolinium. • Normal clearance time is under two hours. • Renally impaired person can take 30 hours or more GADoLInIuM SySTEMIC FIbRoSIS Prepared by Lawyers at Anapol Schwartz. © 2009 All Rights Reserved. Read more information online at www.anapolschwartz.com. 7
- 8. case seLecTiOn criTeria nSF Diagnosis • Definitive diagnosis made by skin biopsy at an involved site. • Usually punch biopsy, but sometimes more involved wedge biopsy. • Diagnosis made clinically in some diabetics because of diabetic risks of skin biopsy. Punch biopsy tools These come in a variety of sizes. Family practice physicians use them routinely, but some do not go deeper than 5 mm and refer to dermatologist for deeper penetration. whaT cases TO Take? • If NSF is confirmed by biopsy, take the case. • If diagnosis made clinically in diabetic probably take the case. • If NSF is not confirmed by biopsy or diagnosis made clinically, do not take the case, until and unless diagnosis made. • Traditional approach of getting medical records and having an expert review them will not work. • Clients need to be told up front that there is no provable case without NSF diagnosis. GADoLInIuM SySTEMIC FIbRoSIS Prepared by Lawyers at Anapol Schwartz. © 2009 All Rights Reserved. Read more information online at www.anapolschwartz.com.
- 9. GADoLInIuM SySTEMIC FIbRoSIS Prepared by Lawyers at Anapol Schwartz. © 2009 All Rights Reserved. Read more information online at www.anapolschwartz.com. 9
- 10. manufacTurers Five gadolinium contrast solutions are approved for sale in the US: 1. Omniscan (GE) 2. Magnevist (Bayer) 3. OptiMARK (Mallinckrodt/Tyco) 4. MultiHance (Bracco) 5. ProHance (Bracco) FDA May 23, 2007 Reports of NSF following administration of gadolinium solu- tions show the risk of NSF by brand of solution used is: 1.Omniscan by GE (highest risk) 2. Magnevist by Bayer (second highest risk)* 3. OptiMARK by Tyco (third highest risk) There are no reported cases of NSF with ProHance or Multi- Hance alone (both by Bracco) *bayer rank above Tyco might be attributable to higher sales for bayer ‘s Magnevist than Tyco’s OptiMARK, and actual risk for Bayer product might be significantly lower than Tyco or GE. GADoLInIuM SySTEMIC FIbRoSIS Prepared by Lawyers at Anapol Schwartz. © 2009 All Rights Reserved. Read more information online at www.anapolschwartz.com. 10
- 11. currenT LiTigaTiOn Gadolinium MDL In re: Gadolinium Based Contrast Agents Product Liability Litiga- tion. Case No. 1:08 GD 50000, MDL 1909, United States District Court, Northern District of Ohio at Cleveland • MDL 1909 • Cleveland • Judge Polster • First meeting March 5, 2008 • Second meeting April 8, 2008 sTaTe cOurTs • New Jersey • Pennsylvania • California • Illinois • Missouri Others with diversity-destroying defendant. GADoLInIuM SySTEMIC FIbRoSIS Prepared by Lawyers at Anapol Schwartz. © 2009 All Rights Reserved. Read more information online at www.anapolschwartz.com. 11