Gengraf

Tell your doctor about all the medicines you take including prescription and non-prescription medicines, vitamins, and herbal supplements. Especially tell your doctor if you take:

• other medications that decrease the functioning of the immune system such as azathioprine (Imuran), cancer chemotherapy, methotrexate (Rheumatrex), sirolimus (Rapamune), and tacrolimus (Prograf)
• other medicines that can cause high blood pressure or kidney damage such as amphotericin B (Amphotec, Fungizone); cimetidine (Tagamet); ciprofloxacin (Cipro); colchicine; fenofibrate (Antara, Lipophen, Tricor); gemfibrozil (Lopid); gentamicin; ketoconazole (Nizoral); melphalan (Alkeran); nonsteroidal anti-inflammatory drugs such as diclofenac (Cataflam, Voltaren), naproxen (Aleve, Naprosyn), and sulindac (Clinoril); ranitidine (Zantac); tobramycin (Tobi); trimethoprim with sulfamethoxazole (Bactrim, Septra); and vancomycin (Vancocin)
• acyclovir (Zovirax)
• allopurinol (Zyloprim)
• amiodarone (Cordarone)
• angiotensin-converting enzyme (ACE) inhibitors such as benazepril (Lotensin), captopril (Capoten), enalapril (Vasotec), fosinopril (Monopril), lisinopril (Prinivil, Zestril), moexipril (Univasc), perindopril (Aceon), quinapril (Accupril), ramipril (Altace), and trandolapril (Mavik)
• angiotensin II receptor antagonists such as candesartan (Atacand), eprosartan (Teveten), irbesartan (Avapro), losartan (Cozaar), olmesartan (Benicar), telmisartan (Micardis), and valsartan (Diovan)
• certain antifungal medications such as fluconazole (Diflucan), and itraconazole (Sporanox); azithromycin (Zithromax)
• bromocriptine (Parlodel)
• calcium channel blockers such as diltiazem (Cardizem), nicardipine (Cardene), and verapamil (Calan); carbamazepine (Tegretol)
• cholesterol-lowering medications (statins) such as atorvastatin (Lipitor), fluvastatin (Lescol), lovastatin (Mevacor), pravastatin (Pravachol), and simvastatin (Zocor)
• clarithromycin (Biaxin)
• dalfopristin and quinupristin combination (Synercid)
• danazol
• digoxin (Lanoxin)
• certain diuretics ('water pills') including amiloride (Midamor), spironolactone (Aldactone), and triamterene (Dyazide)
• erythromycin
• HIV protease inhibitors such as indinavir (Crixivan), nelfinavir (Viracept), ritonavir (Norvir, in Kaletra), and saquinavir (Fortovase)
• imatinib (Gleevec)
• metoclopramide (Reglan)
• methylprednisolone (Medrol)
• nafcillin; octreotide (Sandostatin)
• oral contraceptives (birth control pills)
• orlistat (Xenical)
• phenobarbital
• phenytoin (Dilantin)
• potassium supplements
• prednisolone (Pediapred)
• repaglinide (Prandin)
• rifabutin (Mycobutin)
• rifampin (Rifadin, Rimactane)
• St. John's wort
• sulfinpyrazone (Anturane)
• terbinafine (Lamisil)
• ticlopidine (Ticlid)

This is not a complete list of Gengraf drug interactions. Ask your doctor or pharmacist for more information.

Grapefruit and grapefruit juice may interact with Gengraf and lead to potentially dangerous effects. Discuss the use of grapefruit products with your doctor.

Your doctor may tell you to limit the amount of potassium in your diet. Follow these instructions carefully. Talk to your doctor about the amount of potassium-rich foods such as bananas, prunes, raisins, and orange juice you may have in your diet. Many salt substitutes contain potassium, so talk to your doctor about using them during your treatment.

Before using Gengraf, tell your doctor about all of your medical conditions including:

• if you are allergic to Gengraf, any other medications, or any of the inactive ingredients in Gengraf. Ask your pharmacist for a list of the inactive ingredients
• tell your doctor if you have or have ever had any of the conditions mentioned in the "Gengraf Precautions" section
• tell your doctor if you have low cholesterol, low levels of magnesium in your blood, any condition that makes it difficult for your body to absorb nutrients, or liver disease
• tell your doctor if you have an eye infection, if you have a punctal plug (stopper inserted by a doctor in a tear duct to keep tears in the eye), and if you have or have ever had a herpes infection of the eye
• if you are pregnant or breastfeeding

Tell your doctor about all the medicines you take including prescription and non-prescription medicines, vitamins, and herbal supplements.

Do not have vaccinations without talking to your doctor.

Tell your doctor if you are pregnant or plan to become pregnant.

The FDA categorizes medications based on safety for use during pregnancy. Five categories - A, B, C, D, and X, are used to classify the possible risks to an unborn baby when a medication is taken during pregnancy.

Gengraf falls into category C. In animal studies, pregnant animals were given this medication and had some babies born with problems. No well-controlled studies have been done in humans. Therefore, this medication may be used if the potential benefits to the mother outweigh the potential risks to the unborn child.

You should not use cyclosporine if you are allergic to it. You may not be able to use cyclosporine if you have:

• kidney disease;

• untreated or uncontrolled high blood pressure; or

• any type of cancer.

If you are being treated for psoriasis, you should not receive ultraviolet light therapy (PUVA or UVB), radiation treatments, coal tar, or drugs that weaken the immune system (such as methotrexate) while you are receiving cyclosporine.

Cyclosporine can lower blood cells that help your body fight infections, or cause your body to produce too much of a certain type of white blood cells. This can lead to serious and sometimes fatal conditions, including cancer, a severe brain infection that can lead to disability or death, or a virus that can cause failure of a transplanted kidney. Talk with your doctor about your specific risk.

MAKE SURE ALL DOCTORS INVOLVED IN YOUR CARE KNOW YOU ARE TAKING CYCLOSPORINE.

It is not known whether this medicine will harm an unborn baby. Tell your doctor if you are pregnant or plan to become pregnant.

Cyclosporine can pass into breast milk and may harm a nursing baby. You should not breast-feed while you are using cyclosporine.

Grapefruit and grapefruit juice may interact with cyclosporine and lead to unwanted side effects. Avoid the use of grapefruit products while taking cyclosporine.

Avoid being near people who are sick or have infections. Tell your doctor at once if you develop signs of infection.

Do not receive a "live" vaccine while using cyclosporine. The vaccine may not work as well during this time, and may not fully protect you from disease. Live vaccines include measles, mumps, rubella (MMR), polio, rotavirus, typhoid, yellow fever, varicella (chickenpox), zoster (shingles), and nasal flu (influenza) vaccine.

Avoid exposure to sunlight or tanning beds. Cyclosporine can make you sunburn more easily. Wear protective clothing and use sunscreen (SPF 30 or higher) when you are outdoors.

Cyclosporine can harm your kidneys. This effect is increased when you also use certain other medicines, including: antivirals, cholesterol-lowering drugs, chemotherapy, injected antibiotics, medicine for bowel disorders, medicines to treat autoimmune disorders, medicine to prevent organ transplant rejection, stomach acid reducers (Tagamet, Zantac), and some pain or arthritis medicines (including aspirin, Tylenol, Advil, and Aleve).

Many drugs can interact with cyclosporine. Not all possible interactions are listed here. Tell your doctor about all your current medicines and any you start or stop using, especially:

• ambrisentan or bosentan;

• dabigatran;

• rifabutin;

• St. John's wort;

• antibiotic or antifungal medicine;

• antiviral medicine to treat hepatitis C or HIV/AIDS;

• birth control pills;

• cholesterol-lowering medication:

• heart or blood pressure medication, including a diuretic or "water pill";

• seizure medication; or

• steroid medication (oral, nasal, inhaled, or injectable).

This list is not complete and many other drugs can interact with cyclosporine. This includes prescription and over-the-counter medicines, vitamins, and herbal products. Give a list of all your medicines to any healthcare provider who treats you.

Cyclosporine is a potent immunosuppressive agent that in animals prolongs survival of allogeneic transplants involving skin, kidney, liver, heart, pancreas, bone marrow, small intestine, and lung. Cyclosporine has been demonstrated to suppress some humoral immunity and to a greater extent, cell-mediated immune reactions such as allograft rejection, delayed hypersensitivity, experimental allergic encephalomyelitis, Freund's adjuvant arthritis, and graft versus host disease in many animal species for a variety of organs.

The effectiveness of cyclosporine results from specific and reversible inhibition of immunocompetent lymphocytes in the G0- and G1-phase of the cell cycle. T-lymphocytes are preferentially inhibited. The T-helper cell is the main target, although the T-suppressor cell may also be suppressed. Cyclosporine also inhibits lymphokine production and release including interleukin-2.

No effects on phagocytic function (changes in enzyme secretions, chemotactic migration of granulocytes, macrophage migration, carbon clearance in vivo) have been detected in animals. Cyclosporine does not cause bone marrow suppression in animal models or man.

Pharmacokinetics

The immunosuppressive activity of cyclosporine is primarily due to parent drug. Following oral administration, absorption of cyclosporine is incomplete. The extent of absorption of cyclosporine is dependent on the individual patient, the patient population, and the formulation. Elimination of cyclosporine is primarily biliary with only 6% of the dose (parent drug and metabolites) excreted in urine. The disposition of cyclosporine from blood is generally biphasic, with a terminal half-life of approximately 8.4 hours (range 5 to 18 hours). Following intravenous administration, the blood clearance of cyclosporine (assay: HPLC) is approximately 5 to 7 mL/min/kg in adult recipients of renal or liver allografts. Blood cyclosporine clearance appears to be slightly slower in cardiac transplant patients.

The Gengraf® Capsules (cyclosporine capsules, USP [MODIFIED]) and Gengraf® Oral Solution (cyclosporine oral solution, USP [MODIFIED]) are bioequivalent. Gengraf® Oral Solution diluted with orange juice or with apple juice is bioequivalent to Gengraf® Oral Solution diluted with water. The effect of milk on the bioavailability of cyclosporine when administered as Gengraf® Oral Solution has not been evaluated.

The relationship between administered dose and exposure (area under the concentration versus time curve, AUC) is linear within the therapeutic dose range. The intersubject variability (total, %CV) of cyclosporine exposure (AUC) when cyclosporine (MODIFIED) or Sandimmune® is administered ranges from approximately 20% to 50% in renal transplant patients. This intersubject variability contributes to the need for individualization of the dosing regimen for optimal therapy (See DOSAGE AND ADMINISTRATION). Intrasubject variability of AUC in renal transplant recipients (%CV) was 9% to 21% for cyclosporine (MODIFIED) and 19% to 26% for Sandimmune®. In the same studies, intrasubject variability of trough concentrations (%CV) was 17% to 30% for cyclosporine (MODIFIED) and 16% to 38% for Sandimmune®.

Cyclosporine (MODIFIED) has increased bioavailability compared to Sandimmune®. The absolute bioavailability of cyclosporine administered as Sandimmune® is dependent on the patient population, estimated to be less than 10% in liver transplant patients and as great as 89% in some renal transplant patients. The absolute bioavailability of cyclosporine administered as cyclosporine (MODIFIED) has not been determined in adults. In studies of renal transplant, rheumatoid arthritis and psoriasis patients, the mean cyclosporine AUC was approximately 20% to 50% greater and the peak blood cyclosporine concentration (Cmax) was approximately 40% to 106% greater following administration of cyclosporine (MODIFIED) compared to following administration of Sandimmune®. The dose normalized AUC in de novo liver transplant patients administered cyclosporine (MODIFIED) 28 days after transplantation was 50% greater and Cmax was 90% greater than in those patients administered Sandimmune®. AUC and Cmax are also increased (cyclosporine [MODIFIED] relative to Sandimmune®) in heart transplant patients, but data are very limited. Although the AUC and Cmax values are higher on cyclosporine (MODIFIED) relative to Sandimmune®, the predose trough concentrations (dose-normalized) are similar for the two formulations.

Following oral administration of cyclosporine (MODIFIED), the time to peak blood cyclosporine concentrations (Tmax) ranged from 1.5 to 2.0 hours. The administration of food with cyclosporine (MODIFIED) decreases the cyclosporine AUC and Cmax. A high fat meal (669 kcal, 45 grams fat) consumed within one-half hour before cyclosporine (MODIFIED) administration decreased the AUC by 13% and Cmax by 33%. The effects of a low fat meal (667 kcal, 15 grams fat) were similar.

The effect of T-tube diversion of bile on the absorption of cyclosporine from cyclosporine (MODIFIED) was investigated in eleven de novo liver transplant patients. When the patients were administered cyclosporine (MODIFIED) with and without T-tube diversion of bile, very little difference in absorption was observed, as measured by the change in maximal cyclosporine blood concentrations from pre-dose values with the T-tube closed relative to when it was open: 6.9±41% (range -55% to 68%).

Cyclosporine is distributed largely outside the blood volume. The steady state volume of distribution during intravenous dosing has been reported as 3 to 5 L/kg in solid organ transplant recipients. In blood, the distribution is concentration dependent. Approximately 33% to 47% is in plasma, 4% to 9% in lymphocytes, 5% to 12% in granulocytes, and 41% to 58% in erythrocytes. At high concentrations, the binding capacity of leukocytes and erythrocytes becomes saturated. In plasma, approximately 90% is bound to proteins, primarily lipoproteins. Cyclosporine is excreted in human milk. (See PRECAUTIONS, Nursing Mothers)

Cyclosporine is extensively metabolized by the cytochrome P-450 3A enzyme system in the liver, and to a lesser degree in the gastrointestinal tract, and the kidney. The metabolism of cyclosporine can be altered by the coadministration of a variety of agents. (See  PRECAUTIONS, Drug Interactions) At least 25 metabolites have been identified from human bile, feces, blood, and urine. The biological activity of the metabolites and their contributions to toxicity are considerably less than those of the parent compound. The major metabolites (M1, M9, and M4N) result from oxidation at the 1-beta, 9-gamma, and 4-N-demethylated positions, respectively. At steady state following the oral administration of Sandimmune®, the mean AUCs for blood concentrations of M1, M9, and M4N are about 70%, 21%, and 7.5% of the AUC for blood cyclosporine concentrations, respectively. Based on blood concentration data from stable renal transplant patients (13 patients administered cyclosporine [MODIFIED] and Sandimmune® in a crossover study), and bile concentration data from de novo liver transplant patients (4 administered cyclosporine (MODIFIED), 3 administered Sandimmune®), the percentage of dose present as M1, M9, and M4N metabolites is similar when either cyclosporine (MODIFIED) or Sandimmune® is administered.

Only 0.1% of a cyclosporine dose is excreted unchanged in the urine. Elimination is primarily biliary with only 6% of the dose (parent drug and metabolites) excreted in the urine. Neither dialysis nor renal failure alters cyclosporine clearance significantly.

(See PRECAUTIONS, Drug Interactions) When diclofenac or methotrexate was coadministered with cyclosporine in rheumatoid arthritis patients, the AUC of diclofenac and methotrexate, each was significantly increased. (See PRECAUTIONS, Drug Interactions) No clinically significant pharmacokinetic interactions occurred between cyclosporine and aspirin, ketoprofen, piroxicam, or indomethacin.

Renal Impairment

In a study performed in 4 subjects with end-stage renal disease (creatinine clearance <5 mL/min), an intravenous infusion of 3.5 mg/kg of cyclosporine over 4 hours administered at the end of a hemodialysis session resulted in a mean volume of distribution (Vdss) of 3.49 L/kg and systemic clearance (CL) of 0.369 L/hr/kg. This systemic CL (0.369 L/hr/kg) was approximately two thirds of the mean systemic CL (0.56 L/hr/kg) of cyclosporine in historical control subjects with normal renal function. In 5 liver transplant patients, the mean clearance of cyclosporine on and off hemodialysis was 463 mL/min and 398 mL/min, respectively. Less than 1% of the dose of cyclosporine was recovered in the dialysate.

Hepatic Impairment

Cyclosporine is extensively metabolized by the liver. Since severe hepatic impairment may result in significantly increased cyclosporine exposures, the dosage of cyclosporine may need to be reduced in these patients.

Pediatric Population

Pharmacokinetic data from pediatric patients administered cyclosporine (MODIFIED) or Sandimmune® are very limited. In 15 renal transplant patients aged 3-16 years, cyclosporine whole blood clearance after IV administration of Sandimmune® was 10.6±3.7 mL/min/kg (assay: Cyclo-trac specific RIA). In a study of 7 renal transplant patients aged 2-16, the cyclosporine clearance ranged from 9.8-15.5 mL/min/kg. In 9 liver transplant patients aged 0.6-5.6 years, clearance was 9.3±5.4 mL/min/kg (assay: HPLC).

In the pediatric population, cyclosporine (MODIFIED) also demonstrates an increased bioavailability as compared to Sandimmune®. In 7 liver de novo transplant patients aged 1.4-10 years, the absolute bioavailability of cyclosporine (MODIFIED) was 43% (range 30%-68%) and for Sandimmune® in the same individuals absolute bioavailability was 28% (range 17%-42%).

Geriatric Population

Comparison of single dose data from both normal elderly volunteers (N=18, mean age 69 years) and elderly rheumatoid arthritis patients (N=16, mean age 68 years) to single dose data in young adult volunteers (N=16, mean age 26 years) showed no significant difference in the pharmacokinetic parameters.

(See also BOXED WARNING)

All Patients

Cyclosporine, the active ingredient of Gengraf® Oral Solution (cyclosporine oral solution, USP [MODIFIED]), can cause nephrotoxicity and hepatotoxicity. The risk increases with increasing doses of cyclosporine. Renal dysfunction including structural kidney damage is a potential consequence of Gengraf® and therefore renal function must be monitored during therapy. Care should be taken in using cyclosporine with nephrotoxic drugs. (See PRECAUTIONS)

Patients receiving Gengraf® require frequent monitoring of serum creatinine. (See Special Monitoring under DOSAGE AND ADMINISTRATION) Elderly patients should be monitored with particular care, since decreases in renal function also occur with age. If patients are not properly monitored and doses are not properly adjusted, cyclosporine therapy can be associated with the occurrence of structural kidney damage and persistent renal dysfunction.

An increase in serum creatinine and BUN may occur during Gengraf® therapy and reflect a reduction in the glomerular filtration rate. Impaired renal function at any time requires close monitoring, and frequent dosage adjustment may be indicated. The frequency and severity of serum creatinine elevations increase with dose and duration of cyclosporine therapy. These elevations are likely to become more pronounced without dose reduction or discontinuation.

Because Gengraf® Oral Solution (Cyclosporine Oral Solution, USP [MODIFIED]) is not bioequivalent to Sandimmune® Oral Solution (Cyclosporine Oral Solution, USP), conversion from Gengraf® to Sandimmune® using a 1:1 ratio (mg/kg/day) may result in lower cyclosporine blood concentrations. Conversion from Gengraf® to Sandimmune® should be made with increased monitoring to avoid the potential of underdosing.

Kidney, Liver, and Heart Transplant

Nephrotoxicity

Cyclosporine, the active ingredient of Gengraf® Oral Solution (cyclosporine oral solution, USP [MODIFIED]), can cause nephrotoxicity and hepatotoxicity when used in high doses. It is not unusual for serum creatinine and BUN levels to be elevated during cyclosporine therapy. These elevations in renal transplant patients do not necessarily indicate rejection, and each patient must be fully evaluated before dosage adjustment is initiated.

Based on the historical Sandimmune® experience with oral solution, nephrotoxicity associated with cyclosporine had been noted in 25% of cases of renal transplantation, 38% of cases of cardiac transplantation, and 37% of cases of liver transplantation. Mild nephrotoxicity was generally noted 2 to 3 months after renal transplant and consisted of an arrest in the fall of the pre-operative elevations of BUN and creatinine at a range of 35 to 45 mg/dL and 2.0 to 2.5 mg/dL respectively. These elevations were often responsive to cyclosporine dosage reduction.

More overt nephrotoxicity was seen early after transplantation and was characterized by a rapidly rising BUN and creatinine. Since these events are similar to renal rejection episodes, care must be taken to differentiate between them. This form of nephrotoxicity is usually responsive to cyclosporine dosage reduction.

Although specific diagnostic criteria which reliably differentiate renal graft rejection from drug toxicity have not been found, a number of parameters have been significantly associated with one or the other. It should be noted however, that up to 20% of patients may have simultaneous nephrotoxicity and rejection.

A form of a cyclosporine-associated nephropathy is characterized by serial deterioration in renal function and morphologic changes in the kidneys. From 5% to 15% of transplant recipients who have received cyclosporine will fail to show a reduction in rising serum creatinine despite a decrease or discontinuation of cyclosporine therapy. Renal biopsies from these patients will demonstrate one or several of the following alterations: tubular vacuolization, tubular microcalcifications, peritubular capillary congestion, arteriolopathy, and a striped form of interstitial fibrosis with tubular atrophy. Though none of these morphologic changes is entirely specific, a diagnosis of cyclosporine-associated structural nephrotoxicity requires evidence of these findings.

When considering the development of cyclosporine-associated nephropathy, it is noteworthy that several authors have reported an association between the appearance of interstitial fibrosis and higher cumulative doses or persistently high circulating trough concentrations of cyclosporine. This is particularly true during the first 6 post-transplant months when the dosage tends to be highest and when, in kidney recipients, the organ appears to be most vulnerable to the toxic effects of cyclosporine. Among other contributing factors to the development of interstitial fibrosis in these patients are prolonged perfusion time, warm ischemia time, as well as episodes of acute toxicity, and acute and chronic rejection. The reversibility of interstitial fibrosis and its correlation to renal function have not yet been determined. Reversibility of arteriolopathy has been reported after stopping cyclosporine or lowering the dosage.

Impaired renal function at any time requires close monitoring, and frequent dosage adjustment may be indicated.

In the event of severe and unremitting rejection, when rescue therapy with pulse steroids and monoclonal antibodies fail to reverse the rejection episode, it may be preferable to switch to alternative immunosuppressive therapy rather than increase the Gengraf® dose to excessive blood concentrations.

Due to the potential for additive or synergistic impairment of renal function, caution should be exercised when coadministering Gengraf® with other drugs that may impair renal function. (See PRECAUTIONS, Drug Interactions)

Thrombotic Microangiopathy

Occasionally patients have developed a syndrome of thrombocytopenia and microangiopathic hemolytic anemia which may result in graft failure. The vasculopathy can occur in the absence of rejection and is accompanied by avid platelet consumption within the graft as demonstrated by Indium 111 labeled platelet studies. Neither the pathogenesis nor the management of this syndrome is clear. Though resolution has occurred after reduction or discontinuation of cyclosporine and 1) administration of streptokinase and heparin or 2) plasmapheresis, this appears to depend upon early detection with Indium 111 labeled platelet scans. (See ADVERSE REACTIONS)

Hyperkalemia

Significant hyperkalemia (sometimes associated with hyperchloremic metabolic acidosis) and hyperuricemia have been seen occasionally in individual patients.

Hepatotoxicity

Cases of hepatotoxicity and liver injury including cholestasis, jaundice, hepatitis, and liver failure have been reported in patients treated with cyclosporine. Most reports included patients with significant co-morbidities, underlying conditions and other confounding factors including infectious complications and comedications with hepatotoxic potential. In some cases, mainly in transplant patients, fatal outcomes have been reported. (See ADVERSE REACTIONS, Postmarketing Experience, Kidney, Liver and Heart Transplantation)

Hepatotoxicity, usually manifested by elevations in hepatic enzymes and bilirubin, was reported in patients treated with cyclosporine in clinical trials: 4% in renal transplantation, 7% in cardiac transplantation, and 4% in liver transplantation. This was usually noted during the first month of therapy when high doses of cyclosporine were used. The chemistry elevations usually decreased with a reduction in dosage.

Malignancies

As in patients receiving other immunosuppressants, those patients receiving cyclosporine are at increased risk for development of lymphomas and other malignancies, particularly those of the skin. Patients taking cyclosporine should be warned to avoid excess ultraviolet light exposure. The increased risk appears related to the intensity and duration of immunosuppression rather than to the use of specific agents. Because of the danger of oversuppression of the immune system resulting in increased risk of infection or malignancy, a treatment regimen containing multiple immunosuppressants should be used with caution. Some malignancies may be fatal. Transplant patients receiving cyclosporine are at increased risk for serious infection with fatal outcome.

Serious Infections

Patients receiving immunosuppressants, including Gengraf®, are at increased risk of developing bacterial, viral, fungal, and protozoal infections, including opportunistic infections. These infections may lead to serious, including fatal, outcomes. (See BOXED WARNING and ADVERSE REACTIONS)

Polyoma Virus Infections

Patients receiving immunosuppressants, including Gengraf®, are at increased risk for opportunistic infections, including polyoma virus infections. Polyoma virus infections in transplant patients may have serious, and sometimes, fatal outcomes. These include cases of JC virus-associated progressive multifocal leukoencephalopathy (PML), and polyoma virus-associated nephropathy (PVAN), especially due to BK virus infection, which have been observed in patients receiving cyclosporine. PVAN is associated with serious outcomes, including deteriorating renal function and renal graft loss, (See ADVERSE REACTIONS, Postmarketing Experience, Kidney, Liver and Heart Transplantation). Patient monitoring may help detect patients at risk for PVAN.

Cases of PML have been reported in patients treated with Gengraf®. PML, which is sometimes fatal, commonly presents with hemiparesis, apathy, confusion, cognitive deficiencies and ataxia. Risk factors for PML include treatment with immunosuppressant therapies and impairment of immune function. In immunosuppressed patients, physicians should consider PML in the differential diagnosis in patients reporting neurological symptoms and consultation with a neurologist should be considered as clinically indicated.

Consideration should be given to reducing the total immunosuppression in transplant patients who develop PML or PVAN. However, reduced immunosuppression may place the graft at risk.

Neurotoxicity

There have been reports of convulsions in adult and pediatric patients receiving cyclosporine, particularly in combination with high dose methylprednisolone.

Encephalopathy, including Posterior Reversible Encephalopathy Syndrome (PRES), has been described both in post-marketing reports and in the literature. Manifestations include impaired consciousness, convulsions, visual disturbances (including blindness), loss of motor function, movement disorders and psychiatric disturbances. In many cases, changes in the white matter have been detected using imaging techniques and pathologic specimens. Predisposing factors such as hypertension, hypomagnesemia, hypocholesterolemia, high-dose corticosteroids, high cyclosporine blood concentrations, and graft-versus-host disease have been noted in many but not all of the reported cases. The changes in most cases have been reversible upon discontinuation of cyclosporine, and in some cases improvement was noted after reduction of dose. It appears that patients receiving liver transplant are more susceptible to encephalopathy than those receiving kidney transplant. Another rare manifestation of cyclosporine-induced neurotoxicity, occurring in transplant patients more frequently than in other indications, is optic disc edema including papilloedema, with possible visual impairment, secondary to benign intracranial hypertension.

Care should be taken in using cyclosporine with nephrotoxic drugs. (See PRECAUTIONS)

Rheumatoid Arthritis

Cyclosporine nephropathy was detected in renal biopsies of 6 out of 60 (10%) rheumatoid arthritis patients after the average treatment duration of 19 months. Only one patient, out of these 6 patients, was treated with a dose ≤4 mg/kg/day. Serum creatinine improved in all but one patient after discontinuation of cyclosporine. The "maximal creatinine increase" appears to be a factor in predicting cyclosporine nephropathy.

There is a potential, as with other immunosuppressive agents, for an increase in the occurrence of malignant lymphomas with cyclosporine. It is not clear whether the risk with cyclosporine is greater than that in rheumatoid arthritis patients or in rheumatoid arthritis patients on cytotoxic treatment for this indication. Five cases of lymphoma were detected: four in a survey of approximately 2,300 patients treated with cyclosporine for rheumatoid arthritis, and another case of lymphoma was reported in a clinical trial. Although other tumors (12 skin cancers, 24 solid tumors of diverse types, and 1 multiple myeloma) were also reported in this survey, epidemiologic analyses did not support a relationship to cyclosporine other than for malignant lymphomas.

Patients should be thoroughly evaluated before and during Gengraf® Oral Solution (cyclosporine oral solution, USP [MODIFIED]) treatment for the development of malignancies. Moreover, use of Gengraf® therapy with other immunosuppressive agents may induce an excessive immunosuppression which is known to increase the risk of malignancy.

Psoriasis

(See also BOXED WARNING for Psoriasis)

Since cyclosporine is a potent immunosuppressive agent with a number of potentially serious side effects, the risks and benefits of using Gengraf® Oral Solution (cyclosporine oral solution, USP [MODIFIED]) should be considered before treatment of patients with psoriasis. Cyclosporine, the active ingredient in Gengraf®, can cause nephrotoxicity and hypertension (See PRECAUTIONS) and the risk increases with increasing dose and duration of therapy. Patients who may be at increased risk such as those with abnormal renal function, uncontrolled hypertension or malignancies, should not receive Gengraf®.

Renal dysfunction is a potential consequence of Gengraf®, therefore renal function must be monitored during therapy.

Patients receiving Gengraf® require frequent monitoring of serum creatinine. (See Special Monitoring under DOSAGE AND ADMINISTRATION) Elderly patients should be monitored with particular care, since decreases in renal function also occur with age. If patients are not properly monitored and doses are not properly adjusted, cyclosporine therapy can cause structural kidney damage and persistent renal dysfunction.

An increase in serum creatinine and BUN may occur during Gengraf® therapy and reflects a reduction in the glomerular filtration rate.

Kidney biopsies from 86 psoriasis patients treated for a mean duration of 23 months with 1.2 to 7.6 mg/kg/day of cyclosporine showed evidence of cyclosporine nephropathy in 18/86 (21%) of the patients. The pathology consisted of renal tubular atrophy and interstitial fibrosis. On repeat biopsy of 13 of these patients maintained on various dosages of cyclosporine for a mean of 2 additional years, the number with cyclosporine induced nephropathy rose to 26/86 (30%). The majority of patients (19/26) were on a dose of ≥5.0 mg/kg/day (the highest recommended dose is 4 mg/kg/day). The patients were also on cyclosporine for greater than 15 months (18/26) and/or had a clinically significant increase in serum creatinine for greater than 1 month (21/26). Creatinine levels returned to normal range in 7 of 11 patients in whom cyclosporine therapy was discontinued.

There is an increased risk for the development of skin and lymphoproliferative malignancies in cyclosporine-treated psoriasis patients. The relative risk of malignancies is comparable to that observed in psoriasis patients treated with other immunosuppressive agents.

Tumors were reported in 32 (2.2%) of 1439 psoriasis patients treated with cyclosporine worldwide from clinical trials. Additional tumors have been reported in 7 patients in cyclosporine postmarketing experience. Skin malignancies were reported in 16 (1.1%) of these patients; all but 2 of them had previously received PUVA therapy. Methotrexate was received by 7 patients. UVB and coal tar had been used by 2 and 3 patients, respectively. Seven patients had either a history of previous skin cancer or a potentially predisposing lesion was present prior to cyclosporine exposure. Of the 16 patients with skin cancer, 11 patients had 18 squamous cell carcinomas and 7 patients had 10 basal cell carcinomas.

There were two lymphoproliferative malignancies; one case of non-Hodgkin's lymphoma which required chemotherapy, and one case of mycosis fungoides which regressed spontaneously upon discontinuation of cyclosporine. There were four cases of benign lymphocytic infiltration: 3 regressed spontaneously upon discontinuation of cyclosporine, while the fourth regressed despite continuation of the drug. The remainder of the malignancies, 13 cases (0.9%), involved various organs.

Patients should not be treated concurrently with cyclosporine and PUVA or UVB, other radiation therapy, or other immunosuppressive agents, because of the possibility of excessive immunosuppression and the subsequent risk of malignancies. (See CONTRAINDICATIONS) Patients should also be warned to protect themselves appropriately when in the sun, and to avoid excessive sun exposure. Patients should be thoroughly evaluated before and during treatment for the presence of malignancies remembering that malignant lesions may be hidden by psoriatic plaques. Skin lesions not typical of psoriasis should be biopsied before starting treatment. Patients should be treated with Gengraf® Oral Solution (cyclosporine oral solution, USP [MODIFIED]) only after complete resolution of suspicious lesions, and only if there are no other treatment options. (See Special Monitoring for Psoriasis Patients)

Applies to cyclosporine: oral capsule, oral capsule liquid filled, oral solution

Other dosage forms:

• intravenous solution

Along with its needed effects, cyclosporine (the active ingredient contained in Gengraf) may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.

Check with your doctor immediately if any of the following side effects occur while taking cyclosporine:

• Abdominal or stomach pain or tenderness
• back pain
• black, tarry stools
• blurred vision
• chest pain
• chills
• clay colored stools
• cloudy urine
• cough
• dark urine
• decrease in urine output or decrease in urine-concentrating ability
• decreased appetite
• dizziness
• drowsiness
• fever
• headache
• headache, severe and throbbing
• itching
• loss of appetite
• muscle spasms (tetany) or twitching
• nausea and vomiting
• nervousness
• painful or difficult urination
• pounding in the ears
• shakiness in the legs, arms, hands, or feet
• shortness of breath
• skin rash
• slow or fast heartbeat
• sore throat
• sores, ulcers, or white spots on the lips or in the mouth
• swelling of the feet or lower legs
• swollen glands
• trembling or shaking of the hands or feet
• unusual bleeding or bruising
• unusual tiredness or weakness
• yellow eyes or skin

• Bleeding gums
• blood in the urine
• blood in the vomit
• burning, crawling, itching, numbness, prickling, "pins and needles", or tingling feelings
• convulsions
• difficulty swallowing
• hives
• pale skin
• pinpoint red spots on the skin
• puffiness or swelling of the eyelids or around the eyes, face, lips, or tongue
• severe or continuing stomach pain
• tightness in the chest
• troubled breathing with exertion

• Bloating
• chest discomfort
• constipation
• darkened urine
• hoarseness
• indigestion
• lower back or side pain
• night sweats
• pain or discomfort in the arms, jaw, back, or neck
• pains in the stomach, side, or abdomen, possibly radiating to the back
• sweating
• vomiting of blood or material that looks like coffee grounds

Some side effects of cyclosporine may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects. Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:

• Abdominal or stomach discomfort
• bleeding, tender, or enlarged gums
• blemishes on the skin
• increased hair growth, especially on the face
• pain or tenderness around the eyes and cheekbones
• pimples
• stuffy or runny nose

• Brittle fingernails
• burning feeling in the chest or stomach
• burning, dry, or itching eyes
• continuing ringing or buzzing or other unexplained noise in the ears
• cramps
• discharge or excessive tearing
• feeling of warmth
• hearing loss
• redness of the face, neck, arms, and occasionally, upper chest
• redness, pain, swelling of the eye, eyelid, or inner lining of the eyelid
• swelling of the breasts or breast soreness in both females and males
• weight loss

• Blurred or loss of vision
• discouragement
• disturbed color perception
• double vision
• fear
• feeling sad or empty
• halos around lights
• irritability
• joint pain
• loss of interest or pleasure
• night blindness
• overbright appearance of lights
• tiredness
• trouble concentrating
• trouble sleeping
• tunnel vision
• unusual drowsiness, dullness, tiredness, weakness, or feeling of sluggishness
• weakness
• weight loss