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4.4 Measurable Disease Lesions that can be accurately measured in at least one dimension longest diameter to be recorded ; as 10 mm measured with CT scanning. Lesions 10 mm diameter or bone lesions in the presence of demonstrable uptake of 123I-MIBG on diagnostic scanning, plus elevated levels of tumor markers that are specific for malignant pheochromocytoma: plasma catecholamines or metanephrines, urine catecholamines or metanephrines, serum chromogranin A. Lesions whose size is considered non-measurable include the following: Bone lesions see above ; Leptomeningeal disease Ascites Pleural pericardial effusion Chylothorax Lesions within the chest or abdomen that are not confirmed to be pheochromocytoma by biopsy or 123I-MIBG scanning. 4.5 131I-MIBG or 123I-MIBG Avidity: All patients must have 123I-MIBG or 131 I-MIBG whole-body scanning prior to therapy. Metastases must be avid for the isotope such that their measured gamma radiation measures twice that of background radiation. 4.6 Age: 4 years of age. 4.7 Life Expectancy: greater than 12 weeks. 4.8 Karnofsky Performance Status: 60% or higher. 4 . 9Anticoagulation: Heparin, LMW heparin, coumadin, and other anticoagulants may be used only when platelet counts are 100, 000 L. Platelet counts will be monitored twice weekly after 131I-MIBG therapy. Section 6.2.3 ; 4.10 Pregnancy & Nursing: Non-pregnant and non-nursing because the effects of high-dose 131I-MIBG on the fetus infant are unknown.
Pleted the double-blind phase with documentation of at least 1 episode of AF. Two patients had no symptomatic episodes of AF during double-blind treatment, and a third withdrew consent on the day of randomization: these 3 patients were replaced, so that 43 patients were randomized. Table 1 summarizes clinical and echocardiographic features of the patients in the registry and randomized phases, which showed no significant differences. Echocardiography was not mandatory for the registry, but data were available in 144 patients 76% ; . Thirty-eight patients had a history of prior antiarrhythmic drug treatments: digoxin 32 ; , Vaughan Williams class 1 24 ; , -blocker 19 ; , amiodarone or sotalol 19 ; , and verapamil diltiazem 13 ; . These treatments were continuing in 22 patients up to screening for the present study; prior treatments had been discontinued due to inefficacy 43 ; , side effects 27 ; , or unspecified reasons 25.
LOH and Copy Number Change in Barrett's Esophagus By evaluating the same flow-sorted populations for FISH and LOH using probes and microsatellite polymorphisms corresponding to the TP53 locus from samples representing stages of evolution of 17p TP53 ; LOH diploid, aneuploid, cancer ; during neoplastic progression, our study has extended the results of the earlier investigations. Our use of the same cell populations for FISH and LOH analysis, while overcoming previous sampling limitations, resulted in some populations having relatively few cells for FISH analysis because flowsorted cells are more dilute than cells in situ. However, we do not believe this affected our conclusions because only 8 19% ; samples had 50 nuclei evaluated by FISH and 7 of those had concordant LOH and FISH results. In the one discrepant case, LOH was detected by genotyping, but FISH showed 34 of 40 nuclei with 2 centromeres and 2 arms. Because at least 50% of cells in the population must have LOH for it to be detected, it is statistically highly unlikely that the FISH result could actually have been aneuploid P 0.0016 ; . Exclusion of the one discrepant sample did not affect our conclusions. Because our study design involved multiple samples from the same patient, there might be concern that a large clone with one abnormality might lead to overrepresentation of different patterns of LOH e.g., LOH with normal copy number ; , but this does not seem to be the case. These samples came from 4 patients, and 2 patients each had two samples. Thus, the findings were identical in multiple patients and in duplicate samples of the same clone in single patients. LOH cannot be detected reliably in populations in which less than half of the cells have LOH 54 ; . All samples with normal modal FISH patterns had a modal population of 50%. We attempted to improve FISH sensitivity by combining all abnormal FISH subpopulations in these samples and decreasing the threshold percentage of cells that would result in a FISH abnormal call. This resulted in a modest improvement in sensitivity at a cost of progressively decreasing specificity. At a threshold of 20% abnormal FISH, the sensitivity for LOH was 78%, but the specificity dropped to 63%. It might be hypothesized that because FISH can detect abnormalities in a few cells or even a single cell, it may be more sensitive than LOH. However, sensitivity for a predictive biomarker is defined by its ability to predict future progression to cancer 32 ; , and the available evidence indicates that the size of a 17p TP53 ; LOH clone predicts cancer risk; larger clones progress more rapidly than small clones 66 ; . Further, the fundamental result of our study and those of others is that some cases of 17p TP53 ; LOH arise by genetic mechanisms that do not produce copy number changes, including cases that progress to cancer. Thus, FISH or other copy number assays cannot be equated to LOH, and adequately powered longitudinal phase 3 and or 4 ; studies will be required before considering FISH for clinical assessment of esophageal adenocarcinoma risk. In such studies, TP53 FISH or a combination of TP53 FISH and 17p TP53 ; LOH may provide better, worse, or the same predictive information as 17p TP53 ; LOH alone. These results indicate that validation of biomarker assays should be guided by an appreciation of the biological and genetic mechanisms generating the biomarker abnormality. This principle may be useful in considering other biomarkers as well. For example, TP53 protein overexpression assessed by immunohistochemistry is frequently used as an alternative biomarker assay for TP53 mutation without consideration of potential false-positive or false-negative results. However, nonsense or frameshift mutations can lead to false-negative results because the protein is not expressed, and Barrett's esophagus and esophageal cancers have a relatively high frequency of false-negative and false-positive results for TP53 immunostaining compared with the gold standard of mutation detection 67, 68, 80-83 ; . This potential for false-negative and false-positive results relative to the underlying biomarker, TP53 mutations, may contribute to variable success in cancer risk prediction in case-control and prospective studies of Barrett's esophagus 84, 85 ; . Doak et al. have recently reported results of FISH on cytology brushings of patients with Barrett's esophagus, including probes for the p16 locus on chromosome 9p and the TP53 locus on chromosome 17p 86 ; . Although they did not evaluate LOH by genotyping, they did report low frequencies of p16 and TP53 FISH abnormalities compared with other studies that have used genotyping 71, 80, 87, ; . This suggests that our results may be generalizable to patients in endoscopic surveillance and that many LOH events in Barrett's esophagus arise by mechanisms that do not produce copy number changes. Fahmy et al. reported results of FISH probes for the TP53 locus on 17p as well as other chromosomal loci in Barrett's endoscopic cytology samples 89 ; . Although they also did not evaluate LOH, they reported that TP53 locus loss was associated with a gain of chromosome 17 centromeric copies in 50% of cases, consistent with our observation that that this was a common finding in patients with 17p TP53 ; LOH mechanism 3 ; . These results are consistent with a previous longitudinal study in Barrett's esophagus in which 17p TP53 ; LOH was associated with development of a tetraploid population that rapidly progressed to aneuploidy 37 ; . The issue of alternative biomarker assays is likely to become increasingly common in biomarker validation. Rapid advances in discovery science are producing an increasing number of potential biomarker assays for clinical application, some of which, such as copy number change, might be considered as alternatives for existing biomarkers, such as LOH. Our results indicate that alternative assays should be directly compared with existing biomarker s ; early in phase 1 discovery ; and phase 2 established disease ; validation studies to detect suspected or unsuspected biological mechanisms that may result in discordant results. Such early comparisons are likely to facilitate biomarker selection and power calculations for more advanced validation studies, including clinical platform development and phase 3 retrospective, longitudinal ; and phase 4 prospective ; trials.
[1] Mundy GR, Garrett IR, Harris SE, Chan J, Chen D, Rossini G, et al. Stimulation of bone formation in vitro and in rodents by statins. Science 1999; 286: 1946 - 9. [2] Sugiyama M, Kodama T, Konishi K, Abe K, Asami S, Oikawa S. Compactin and simvastatin, but not pravastatin, induce bone.
Sevelamer - oral renagel ; side effects, medical uses, and drug.
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Exists bound almost entirely to transferrin, several situations can alter the gallium disposition. A deficiency of apotransferrin, caused either by a lack of the protein or by overload of trivalent metal such as Ga3 or Fe3 ; , may not permit all available gallium to be bound to transferrin. In this case, most of the unbound gallium will exist as Ga OH ; less than 2% of the unbound gallium will exist as Ga OH ; 3, and traces will be present as citrate, phosphate, and other species Harris and Pecoraro, 1983; Jackson and Byrne, 1996; Weiner, 1996 ; . Even in the presence of excess apotransferrin, a large sudden influx of gallium cannot bind to transferrin all at once. Thus, when gallium enters the bloodstream rapidly as from i.v. administration ; , the largest portion is initially present as Ga OH ; even when administered with citrate Jackson and Byrne, 1996 ; . When gallium enters the bloodstream more gradually as when administered orally ; it is likely to bind almost entirely to TF as entering. Few data exist on the therapeutic plasma concentrations of Ga, but they are postulated to be approximately 10 to 15 the acute treatment of hypercalcemia of malignancy Warrell et al., 1986 ; , which is within the range where Ga is normally more than 99.9% bound to transferrin. At concentrations several times this high, however, significant amounts of gallate will be present even at equilibrium. As discussed in Section II.B., it is possible that large amounts of plasma gallate may be associated with the nephrotoxicity in rats Newman et al., 1979 ; and humans Krakoff et al., 1979 ; that has sometimes been observed after large i.v. bolus doses of gallium; maximum plasma Ga in these cases was reported to exceed 200 M. In addition to binding to transferrin, gallium binds even more avidly to the related protein lactoferrin, which can remove Ga from transferrin Harris, 1986 ; . Lactoferrin LF ; , like TF, is a two-lobed protein with a molecular weight of approximately 80, 000, which can bind two Fe3 or Ga3 ; ions Levay and Viljoen, 1995 ; . The binding constants of Ga-LF in plasma are log K1 21.43 and log K2 20.57, or approximately 90 times those of Ga-TF Harris, 1986 ; . Apolactoferrin which possesses antibacterial activity ; is concentrated in many epithelial secretions such as milk, seminal fluid, tears, and nasal secretions, typically in amounts of 0.5 to 1 mg ml Masson et al., 1966; Larson and Schall, 1971 ; . It.
Abstract It is possible to differentiate malignant from healthy cells and to classify diseases based upon identification of specific gene expression profiles. We hypothesized that gene expression profiling could also be used to identify differential activation of healthy and malignant cells, and as a model for this examined the molecular sequelae of CD40 activation of healthy and B cell chronic lymphocytic leukemia CLL ; . Hierarchical clustering analysis of gene expression signatures grouped samples by CD40 activation status and further sub-classified CD40 activated CLL cells from healthy B cells. Supervised analyses in healthy B cells compared to CLL cells identified differential regulation of genes governing cell cycle progression and apoptosis. CD40 signaling of CLL cells increases their susceptibility to immune recognition, but promotes survival and cell cycle arrest, making these cells potentially more resistant to chemotherapy. These results illustrate the utility of gene expression profiling to elucidate the molecular sequelae of signaling in healthy cells and altered signaling pathways in malignant cells. This type of approach should be useful to identify targets of therapy of malignant diseases and restasis.
Crohn's disease: In the demyelinating CD subgroup, immunomodulatory therapy led to major improvement in 60% 75% of the patients who could complete treatment ; and moderate in 20% 25% in the patients who could complete treatment ; . Patient 4 discontinued IVIg early in the treatment due to side effects headache and anxiety; prednisone also caused psychosis ; , which precluded an accurate analysis. A detailed list of each agent employed for each patient can be seen in Table 2. For the two patients with MMN, prednisone led to no benefit for patient 4 and mild improvement.
Hervas, Prados, and Cerezo: Treatment of hyperphosphatemia with sevelamer 9. Kaye M: Oral aluminium toxicity in a nondialized patient with renal failure. Clin Nephrol 20: 208211, 1983 Malluche HH, Smith AJ, Abreo K, Faugere M-C: The use of deferoxamine in the management of aluminum accumulation in bone in patients with renal failure. N Engl J Med 311: 140144, 1984 Hodsman AB, Sherrard DJ, Alfrey AC, et al: Bone aluminium and histomorphometric features of renal osteodystrophy. J Clin Endocrinol Metab 54: 539546, 1982 Cannata JB, Olaizola IR, Gomez C, et al: Serum aluminum transport and aluminum uptake in crhonic renal failure: Role of iron and aluminum metabolism. Nephron 65: 141146, 1993 Cannata JB, Fernandez I, Fernandez MJ, Fernandez JL: Role of iron metabolism in absorption and cellular uptake of aluminum. Kidney Int 39: 799803, 1991 Delmez J, Slatopolsky E: Hyperphosphatemia: Its consequences and treatment in patients with chronic renal disease. J Kidney Dis 4: 303317, 1992 Hercz G, Kraut JA, Andress DA, et al: Use of calcium carbonate as a phosphate binder in dialysis patients. Miner Electrolyte Metab 12: 314319, 1986 Chertow GM, Burke SK, Dillon MA, Slatopolsky E: Long term effects of sevelamer hydrochloride on the calcium x phosphate profile on haemodialysis patients. Nephrol Dial Transplant 14: 2907 2914, Burke SK, Slatopolsky EA, Goldberg DI: Renagel , a novel calcium and aluminium-free phosphate binder, inhibits phosphate absorption in normal volunteers. Nephrol Dial Transplant 12: 1640 1644, Chertow GM, Burke SK, Lazarus JM, et al: Poly[allylamina hydrochloride] Renagel ; : A non-calcemic phosphate binder for the treatment of hyperphosphatemia in chronic renal failure. J Kidney Dis 29: 6671, 1997 Golberg DI, Dillon MA, Slatopolsky EA, et al: Effect of Renagel , a non-absorbed, calcium and aluminium-free phosphate binder, on serum phosphorus, calcium and intact parathyroid hormone in end-stage renal disease patients. Nephrol Dial Transplant 13: 23032310, 1998 Block GA, Hulbert-Shearon TE, Levin NW, Port FK: Association of serum phosphorus and calcium x phosphate product with mortality risk in chronic hemodialysis patients: A national study. J Kidney Dis 31: 607617, 1998 Goodman WG, Goldin J, Kuizon BD, et al: Coronary-artery calcification in young adults with end-stage renal disease who are undergoing dialysis. New Engl J Med 342: 14781483, 2000 Raggi P, Boulay A, Chasan-Taber S, et al: Cardiac calcification in adult hemodialysis patients. A link between end-stage renal disease? J Coll Cardiol 39: 695701, 2002 Raggi P, Burke SK, Dillon MA: Sevelamer attenuates the progression of coronary and aortic calcification compared to calciumbased phosphate binder. J Soc Nephrol 12: A1232, 2001 24. Scandinavian Simvastatin Study Group: Randomized trial of cholesterol lowering in 4444 patients with coronary heart disease. The Scandinavian Simvastatin Survival Study 4S ; . Lancet 344: 13831389, 1994 The Lovastatin Study Group III: A multicenter comparison of lovastatin and cholestyramine therapy for severe primary hypercholesterolemia. JAMA 260: 359366, 1988 Lowrie EG, Lew NL: Death risk in hemodialysis patients: The predictive value of commonly measured variables as an evaluation of death rate differences between facilities. J Kidney Dis 15: 458482, 1990 Bommer J, Strohbeck E, Baehner M, Zuna I: Arteriosclerosis in dialysis patients. Int J Artif Organs 19: 638644, 1996 Ma KW, Greene EL, Raji L: Cardiovascular risk factors chronic renal failure and hemodialysis population. J Kidney Dis 19: 505513, 1992 and restoril.
However, in a pre-specified sub-group analysis, renagel demonstrated a significant reduction in mortality from all causes in patients 65 years of age or older and in patients using renagel for two years or more.
The CYP2C9 * 18 allele, occurring in a single Indian 1 of 52 alleles ; , contained two coding mutations, D397A and I359L also found on the defective CYP2C9 * 3 allele ; . Since the CYP2C9 * 3 allele itself is markedly defective, we first tested the effect of the single mutation D397A. Similar to the null variant CYP2C9 * 15, the cDNA carrying the D397A mutation could not be expressed in E. coli despite three repeated rounds of expression, followed by solubilization and purification of the extract. There was no spectral evidence for CYP2C9 holoprotein at any time during the 72-h expression period or after hydroxyapatite purification of the extract. Western blotting with a polyclonal antibody to CYP2C9 also showed no evidence of the apoprotein in partially purified bacterial extracts. These data suggest this amino acid change may prevent expression in E. coli. In the crystal structure of CYP2C9 Williams et al., 2003 ; , D397 is on the surface of the protein; however, it is highly conserved in all the structures that have been determined CYP2A6, CYP2B4, CYP2C5, CYP2C8, CYP2C9, and CYP3A4 ; Johnson et al., 2002; Mestres, 2004; Scott and Halpert, 2005 ; as well as most members of cytochrome P450 families 1 to 3. uncertain whether this D397A change would also prevent expression in humans; however, this change may represent a null allele. This hypothesis is based on a single cDNA expression system. Additional experimentation with other cDNA expression systems and additional clinical data will be helpful to clarify this possibility. The CYP2C9 * 14 R125H ; allele was found in an Indian individual 1 of 52 alleles ; Zhao et al., 2004 ; . The present in vitro results indicate that recombinant CYP2C9.14 is highly defective, with a 90% reduction in tolbutamide clearance. Examination of the crystal structure of CYP2C9 indicates R125 is on the surface of the protein near the heme ligand. R125 is highly conserved in family 2. This amino acid is equivalent to R126 in CYP2B6. R126 is one of several amino acids that appear to be part of binding sites for cytochrome b5 and cytochrome P450 reductase Bridges et al., 1998 ; . These basic amino acids were also proposed to help neutralize the charge of buried heme propionic acid residues, one of which forms hydrogen bonds with the adjacent R124 of CYP2C9. The CYP2C9 * 16 T299A ; allele was found in one Chinese individual 1 of 118 alleles ; . The in vitro data indicated that the recombinant allelic protein had a markedly decreased affinity, maximum velocity, and 90% decrease in the intrinsic clearance for tolbutamide. Thr299 occurs on the back side of and revlimid.
04 11 2006--Announced that it has secured an excess of million in new equity financing from institutional sources through the issuance of Common Stock at current market prices. The funding is intended to be used to immediately implement key aspects of the Company's product development plans, including hiring key personnel for its research laboratory with Dr. Gorodeski and its product development laboratory with the Automated Image Proteomic System AIPS ; project in Chicago, Illinois, putting the e2 CollectorTM into manufacturing development, and bringing together resources and people to develop the strategic distribution strategy for the e2 CollectorTM. 03 30 2006--Announced that Steven Waggoner, M.D. biography on page 15 ; , joined the Company's Scientific-Medical Advisory Board. Dr. Waggoner is to assist Dr. Gorodeski and the Company's research teams in the development, activation, conduct, and analysis of clinical trials designed to test the accuracy and practicality of the Cocktail-CVXTM GCI assays, the Endometrial Cancer Scan, and the Drug Delivery System DDS ; . 03 22 2006--Announced that with its recent product licenses, CytoCore has assembled four product components altogether called the InPathTM System NG, a unique and complete system to address the various aspects of the traditional Pap test. The four components are the e2 CollectorTM, the CocktailCVXTM GCI assays, the AIPS automated microscopy platform, and a new DDS. Each product is an enhancement or upgrade to the current methods being used with the Pap test today. 02 23 2006--Announced that it licensed a new DDS developed by physician Dr. Gorodeski from UHCMC. This DDS could, for the first time, give physicians the ability to apply FDA-approved drugs to existing cervical lesions. The Company anticipates entering trials on this product before the end of the year. 02 17 2006--Announced that it has licensed a new cancer biomarker from Dr. Gorodeski, the inventor, and UHCMC. The new biomarker, labeled CGI5 P2X7 ; , is unique among the few apoptosis markers that were found in preliminary experiments to distinguish precancerous and cancer cells from the corresponding normal cells. CytoCore's CGI5 P2X7 ; biomarker tracks the changes in the dying or apoptotic process, and initial laboratory results have produced excellent sensitivity and specificity measures of biomarker accuracy ; in testing for both cervical and endometrial cancers. 02 13 2006--Announced the signing of a technology transfer agreement between itself and UHCMC, CASE, and Dr. Gorodeski. With this agreement, CytoCore is expanding and strengthening its partnership with these two organizations, which together form a world-class medical teaching and research partnership. 02 09 2006--Announced that CytoCore intends to open a research facility within UHCMC's Center for Clinical Research. The research at UHCMC will likely focus on clinical applications developed at UHCMC for the identification and treatment of certain gynecological disorders including cervical dysplasia and cervical cancer. 02 06 2006--Announced that the Company is changing its name to CytoCore, Inc. The Company's Board approved the name change during the January Board meeting. The Company will be "doing business as" CytoCore, Inc. until the name is officially ratified by a vote of the shareholders at the annual shareholders meeting in June 2006.
Between gingival tissue collagenolytic activity assayed using an exogenous collagen substrate similar to that described by Fullmer ; 1, 2 and GCF flow. However, this was much weaker than the relationship between flow and GCF collagenolytic activity. Moreover, Robertson and Grupe, 4 using a different system, actually found less collagenase activity in the culture media of inflamed gingiva compared to non-inflamed gingiva. Several reasons could explain why the enzyme activity in the GCF appeared to be more strongly correlated to gingival disease than collagenolytic activity in the tissue itself: 1 ; In the gingiva, as in other tissues, most of the extracellular collagenase could and reyataz.
In kidney failure patients, when GFR drops below 25% of normal, compensatory increases in renal excretion are no longer sufficient to maintain normal serum phosphorus level. Control of serum phosphorus is critical to prevent metastatic calcification, a condition where calcium and phosphate precipitate into soft tissues, often in association with a high calcium phosphorus product. Elevated serum phosphorus and calcium phosphorus product are associated with increased risk of death in dialysis patients. Patients with chronic kidney disease on dialysis are usually placed on phosphorus-restricted diets in attempt to control serum phosphorus levels. Dietary phosphorus restriction is usually insufficient to control serum phosphorus levels, and phosphate binders are also used to decrease absorption of dietary phosphorus. Sevelamer Renagel ; is a non absorbable phosphate-binding polymer, approved for the control of serum phosphorus in adult patients on haemodialysis. The MAH has now conducted one clinical study, protocol REN00304 in peritoneal dialysis patients. The objective of this study was to evaluate the safety and efficacy of sevelamer hydrochloride compared with calcium acetate in peritoneal dialysis patients. Regarding the efficacy, it is concluded that treatment for 12 weeks with sevelamer hydrochloride was non-inferior to the 12-week treatment with calcium acetate calcium ; in reducing serum phosphorus levels. The serum phosphorus concentrations in both groups reached the K DOQI guideline target concentration in approximately half the patients. The magnitudes of reduction in serum phosphorus were similar to studies conducted in the HD population. Regarding the safety of the product, the clinical trial REN00304 conducted with Renagel in the PD population has shown that the product is well tolerated in general in this population. The safety profile of Renagel in this new population is consistent with patients' underlying renal disease and with the known safety profile for Renagel. No newly important and potential risks have been identified in this population. Although a higher percentage of patients on sevelamer experienced gastrointestinal events, that is consistent with results from previous studies with the product. The higher prevalence of peritonitis in the Renagel treated group compared with the calcium-acetate treated group and compared with reported prevalence of peritonitis episodes in the literature remains a matter for further surveillance. At present there is no evidence of an association between Renagel use and peritonitis. Therefore, the MAH has proposed modifications to the original risk minimization strategy to follow up the reported cases by the collection of additional information at sites and provide it in the PSURs every six months for the period of two years after approval of this variation. Because failure of a transplant kidney is an increasing reason for end-stage renal disease necessitating dialysis, the CHMP proposed that the interactions with tacrolimus should also be indicated in the Summary of Product Characteristics SPC ; . In addition, cyclosporine A, tacrolimus and mycophenolate mofetil should be mentioned also in the Package Leaflet because up to 50 % patients still continue to take immunosuppressive drugs to maintain residual renal function when on dialysis. The CHMP suggested that drug-drug interactions between sevelamer hydrochloride and antiarrhythmics anti-epileptics could not be accurately judged from the results of the REN00304 study. Therefore instructions for intake of these drugs should be given in the SPC and in the Package Leaflet. The Risk Management Plan will be revised and re-submitted to the CHMP for evaluation. The MAH has accepted this commitment. The CHMP concluded that the overall benefit-risk is favourable for the control of hyperphosphatemia in adult patients receiving peritoneal dialysis and agreed to the extension of the indication of Renagel as applied by the MAH and renagel.
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