Key Word(s): 1 OGIB; 2 baloon endscopy; 3 elder patients; Pres

Key Word(s): 1. OGIB; 2. baloon endscopy; 3. elder patients; Presenting Author: ZHI-JIE XU Additional Authors: YAO-PENG ZHANG Corresponding Author: ZHI-JIE XU Affiliations: Peking University Third Hospital Objective: To study a Case of Intestinal Bleeding Due to Cavernous

Hemangioma. Methods: A 40-year old female Veliparib concentration had hypochromic microcytic anemia for more than 10 years. The lowest hemoglobin was close to 60 g/L. Intestinal bleeding led to her anemia, because she defecated occult blood for many times. The gastroscopy was normal. The colonoscopy found multiple cavernous hemangioma in her sigmoid colon (Fig. 1). She also had multiple hemangioma in the skin. She was told no special treatment could be done because of the diffuse lesions, then she had been taking hemostatic and iron supplements for years. However, she never defecated fresh blood. Small intestinal bleeding was suspected. We recommended her to undertake a double contrast enteranography, which she had done in other

hospital about 3 years ago and found nothing. This time, the examination showed a niche (a diameter of 2.5 cm) in her ileum (Fig. 2). Ileal stromal tumor was diagnosed. She underwent an operation. Results: Three big cavernous hemangioma growing out of the cavity (4 cm, 3 cm and 1 cm respectively) were found and resected. Her anemia disappeared after the operation,. and her hemoglobin keeps normal for more than 1 year up to now, without selleck chemicals hemostatic or iron supplements. Conclusion: We selleck compound should treat every patient carefully, especially when the patient has “atypical” symptoms, although he might already have a “clear” diagnosis. Reliable small intestine double contrast radiography was the best diagnosis method to intestinal lesion at present. Key Word(s): 1. intestinal bleeding; 2. cavernous hemangioma;

3. double contrast; 4. enteranography; Presenting Author: EKATERINA IVANOVA Additional Authors: EVGENY FEDOROV, OLEG YUDIN, EVGENIA POLUKHINA, DENIS SELEZNEV Corresponding Author: EKATERINA IVANOVA Affiliations: Moscow University Hospital No31 Objective: To estimate the value of the capsule enteroscopy (CE) and balloon-assisted enteroscopy (BAE) in the management of the patients with obscure small bowel bleeding. Methods: From 14.02.2007 to 21.04.2013 we performed 70 CE and 102 BAE in 98 pts. (m-54, f-44, mean age 50,3 ± 12,3 yrs., range 17–89) with suspected obscure bleeding. In 40 (58,0%) pts. BAE was performed after the CE. Obvious bleeding was found in 77 pts.; occult in 21. We performed 74 planned and 24 urgent enteroscopies.

Key Word(s): 1 OGIB; 2 baloon endscopy; 3 elder patients; Pres

Key Word(s): 1. OGIB; 2. baloon endscopy; 3. elder patients; Presenting Author: ZHI-JIE XU Additional Authors: YAO-PENG ZHANG Corresponding Author: ZHI-JIE XU Affiliations: Peking University Third Hospital Objective: To study a Case of Intestinal Bleeding Due to Cavernous

Hemangioma. Methods: A 40-year old female Ku0059436 had hypochromic microcytic anemia for more than 10 years. The lowest hemoglobin was close to 60 g/L. Intestinal bleeding led to her anemia, because she defecated occult blood for many times. The gastroscopy was normal. The colonoscopy found multiple cavernous hemangioma in her sigmoid colon (Fig. 1). She also had multiple hemangioma in the skin. She was told no special treatment could be done because of the diffuse lesions, then she had been taking hemostatic and iron supplements for years. However, she never defecated fresh blood. Small intestinal bleeding was suspected. We recommended her to undertake a double contrast enteranography, which she had done in other

hospital about 3 years ago and found nothing. This time, the examination showed a niche (a diameter of 2.5 cm) in her ileum (Fig. 2). Ileal stromal tumor was diagnosed. She underwent an operation. Results: Three big cavernous hemangioma growing out of the cavity (4 cm, 3 cm and 1 cm respectively) were found and resected. Her anemia disappeared after the operation,. and her hemoglobin keeps normal for more than 1 year up to now, without RGFP966 hemostatic or iron supplements. Conclusion: We this website should treat every patient carefully, especially when the patient has “atypical” symptoms, although he might already have a “clear” diagnosis. Reliable small intestine double contrast radiography was the best diagnosis method to intestinal lesion at present. Key Word(s): 1. intestinal bleeding; 2. cavernous hemangioma;

3. double contrast; 4. enteranography; Presenting Author: EKATERINA IVANOVA Additional Authors: EVGENY FEDOROV, OLEG YUDIN, EVGENIA POLUKHINA, DENIS SELEZNEV Corresponding Author: EKATERINA IVANOVA Affiliations: Moscow University Hospital No31 Objective: To estimate the value of the capsule enteroscopy (CE) and balloon-assisted enteroscopy (BAE) in the management of the patients with obscure small bowel bleeding. Methods: From 14.02.2007 to 21.04.2013 we performed 70 CE and 102 BAE in 98 pts. (m-54, f-44, mean age 50,3 ± 12,3 yrs., range 17–89) with suspected obscure bleeding. In 40 (58,0%) pts. BAE was performed after the CE. Obvious bleeding was found in 77 pts.; occult in 21. We performed 74 planned and 24 urgent enteroscopies.

Prednisolone administration attenuated ConA- and α-GalCer-induced

Prednisolone administration attenuated ConA- and α-GalCer-induced hepatitis and systemic inflammatory responses. Treating mice with prednisolone also see more suppressed inflammatory responses in a model of hepatotoxin (CCl4)-induced hepatitis, but surprisingly exacerbated

liver injury and delayed liver repair. In addition, administration of prednisolone also enhanced acetaminophen-, ethanol-, or ethanol plus CCl4-induced liver injury. Immunohistochemical and flow cytometric analyses demonstrated that prednisolone treatment inhibited hepatic macrophage and neutrophil infiltration in CCl4-induced hepatitis and suppressed their phagocytic activities in vivo and in vitro. Macrophage and/or neutrophil depletion aggravated CCl4-induced liver injury and impeded liver regeneration. Finally, conditional disruption of glucocorticoid receptor in macrophages and neutrophils abolished prednisolone-mediated exacerbation of hepatotoxin-induced liver injury. Conclusion: Prednisolone treatment prevents T/NKT cell hepatitis but exacerbates hepatotoxin-induced liver injury by inhibiting macrophage- and neutrophil-mediated phagocytic and hepatic regenerative

functions. These findings may not only increase our understanding of LY2157299 mouse the steroid treatment mechanism but also help us to better manage steroid therapy in liver diseases. (Hepatology 2014;59:1094–1106) “
“The efficacy of treatment with multispecies probiotics on irritable bowel syndrome (IBS) symptoms and the alterations of gut microbiota in patients who have taken probiotics were investigated. This randomized, double-blind,

placebo-controlled trial involved 49 IBS patients (probiotics: 25, placebo: 24) diagnosed according to the Rome III criteria. Patients were randomly assigned to two groups: either to receive multispecies probiotics (a mixture of Bifidobacterium longum, B. bifidum, B. lactis, Lactobacillus acidophilus, L. rhamnosus, and Streptococcus thermophilus) twice a day for 4 weeks or to receive a placebo twice a day for 4 weeks. The primary efficacy end-point was the proportion of participants whose IBS symptoms were substantially relieved at week 4. Secondary end-points were the intensity of abdominal click here pain/discomfort, bloating, stool frequency/consistency, alterations in fecal microflora over the 4 weeks. Fecal microflora were analyzed in 34 patients (probiotics: 17, placebo: 17) by quantitative real-time polymerase chain reaction assays. The proportion of patients whose IBS symptoms were substantially relieved at week 4 was significantly higher in the probiotics group than in the placebo group: 68.0% (17/25) versus 37.5% (9/24) (P < 0.05). Secondary end-points such as improvement in abdominal pain/discomfort and bloating occurred in the probiotics group but not in the placebo group. Fecal analysis revealed that B. lactis, L.

, Waltham, MA) and utilizing a label-free approach Two independe

, Waltham, MA) and utilizing a label-free approach. Two independent replicate MS analyses were carried out per sample. Data are represented as the mean ± standard error of mean (SEM) and were analyzed for statistical significance using one-way analysis of variance, Akt inhibitor followed by Newman-Keuls’

test as a post-hoc test. A P value of <0.05 was considered as significant. We have created a TG mouse in a B6/CBA background with hepatocyte-specific expression of human AEG-1 by using the mouse ALB promoter/enhancer element to drive AEG-1 expression. This particular strain of mouse was chosen because it is very sensitive to hepatocarcinogenesis induced by DEN.11 The human AEG-1 has a C-terminal HA-tag. The expression of AEG-1 in the liver of Alb/AEG-1 mice was confirmed by western blotting PF-01367338 research buy analysis

using anti-HA antibody (Ab) (Fig. 1A). Two founder lines were characterized, initially revealing no significant differences. We therefore pursued further characterization employing one founder line. Male WT and Alb/AEG-1 littermates were given a single IP injection of DEN (10 μg/g) at 14 days of age and were monitored every 4 weeks, starting at 20 weeks. At 28 weeks of age, only 2 of 11 WT animals showed a few very small nodules in the liver, whereas all of the 17 Alb/AEG-1 mice livers harbored numerous nodules of different sizes (arrows in Fig. 1B,C). There was a significant increase in liver-to-body-weight ratio in Alb/AEG-1 mice, when compared to that in WT (Fig. 1D). Histological analysis of the livers of WT mice showed

a few dysplatic, hyperchromatic nuclei (arrow in Fig. 2A), indicating that, with time, HCC would eventually develop. In Alb/AEG-1 mice, a marked increase in dysplastic, hyperchromatic nuclei was observed both in the nodules as well as in the adjacent healthy liver (arrows in Fig. 2B,C). The most striking feature was observed in the hepatic nodules of Alb/AEG-1 mice, showing profound steatotic phenotypes with large lipid droplets in the hepatocytes (Fig. 2C). A moderate level of steatosis was also observed this website in the adjacent healthy liver in Alb/AEG-1 mice. There was a significant increase in hepatic enzymes in the sera of Alb/AEG-1 mice versus the sera of WT mice (Supporting Fig. 1). At 32 weeks of age, the WT mice developed hepatic nodules; however, the nodules that developed in Alb/AEG-1 mice were markedly larger (Supporting Fig. 2). These findings indicate that AEG-1 significantly accelerated the hepatocarcinogenic process in DEN-treated animals. The WT and Alb/AEG-1 mice were followed for 1 year without any DEN treatment. Although AEG-1-induced steatosis was profoundly evident, overt nodular HCC did not develop at this time point.

29 In this context, Tregs are likely to have synergistic regulato

29 In this context, Tregs are likely to have synergistic regulatory effects on different arms of the immune system based on the stages of bile duct injury. Collectively, our in vitro and in vivo studies in a well-established murine model of BA provide compelling evidence that Treg deficiency leads to unopposed DC-dependent costimulation and aberrant activation of effector

T-lymphocytes in the neonatal liver conferring susceptibility to BA. Furthermore, our study revealed cellular and molecular candidates for future investigations to elucidate whether costimulatory blockade of T-cell activation by targeting Tregs or Treg-dependent pathways may prevent progression of bile buy Dorsomorphin duct obstruction in BA. Additional Supporting Information may be found in the online version of this Adriamycin in vitro article. “
“In a recent article in HEPATOLOGY, Kremer et al. explored the association between steatosis, cytokines, and natural killer T (NKT) cell numbers. Elegant experiments suggest that increased interleukin-12 (IL12) secretion, in part by Kupffer

cells, leads to NKT depletion in mice and humans with liver steatosis.1 Recent data suggests that steatosis (consisting mainly of triglycerides) per se is a benign condition and reflects the body’s strategy to cope with excessive fatty acid flux.2 Progressive fatty liver disease that develops in a minority of individuals may stem from learn more dysregulated repair responses.3 The hedgehog pathway has been shown to modulate such responses, and overactivation of the hedgehog pathway leads to fibrogenesis. Furthermore, exposure of primary liver NKT cells to increasing concentrations of Sonic hedgehog, a hedgehog ligand, promotes NKT cell viability and proliferation, and enhances IL13 (a T helper 2 [Th2]cytokine) secretion.4 Mice with excessive hedgehog signaling also harbor increased NKT cells and develop increased

fibrosis in diet-induced nonalcoholic steatohepatitis (W. K. Syn et al., manuscript submitted). Indeed, Tajiri et al. noted increased NKT numbers among individuals with greater nonalcoholic steatohepatitis activity scores.5 In contrast to benign hepatic steatosis, there is increasing data supporting the concept that NKT cells accumulate with progressive fatty liver disease. In this study, NKT cell depletion was associated with elevated IL12 levels; conversely, NKT population was preserved in IL12 knockout mice. As suggested, additional factors are likely to be involved in determining the size of the hepatic NKT population. For example, NKT cells express cysteine-X-cysteine receptor 3 (CXCR3) and CXCR6; recruitment of NKT cells in steatotic liver is likely to be regulated by their associated ligands. In addition, because NKT cell viability is modulated by IL15,6 it would be important to determine if expression of IL15 alters with steatosis.

29 In this context, Tregs are likely to have synergistic regulato

29 In this context, Tregs are likely to have synergistic regulatory effects on different arms of the immune system based on the stages of bile duct injury. Collectively, our in vitro and in vivo studies in a well-established murine model of BA provide compelling evidence that Treg deficiency leads to unopposed DC-dependent costimulation and aberrant activation of effector

T-lymphocytes in the neonatal liver conferring susceptibility to BA. Furthermore, our study revealed cellular and molecular candidates for future investigations to elucidate whether costimulatory blockade of T-cell activation by targeting Tregs or Treg-dependent pathways may prevent progression of bile Volasertib mw duct obstruction in BA. Additional Supporting Information may be found in the online version of this JNK inhibitor article. “
“In a recent article in HEPATOLOGY, Kremer et al. explored the association between steatosis, cytokines, and natural killer T (NKT) cell numbers. Elegant experiments suggest that increased interleukin-12 (IL12) secretion, in part by Kupffer

cells, leads to NKT depletion in mice and humans with liver steatosis.1 Recent data suggests that steatosis (consisting mainly of triglycerides) per se is a benign condition and reflects the body’s strategy to cope with excessive fatty acid flux.2 Progressive fatty liver disease that develops in a minority of individuals may stem from selleck inhibitor dysregulated repair responses.3 The hedgehog pathway has been shown to modulate such responses, and overactivation of the hedgehog pathway leads to fibrogenesis. Furthermore, exposure of primary liver NKT cells to increasing concentrations of Sonic hedgehog, a hedgehog ligand, promotes NKT cell viability and proliferation, and enhances IL13 (a T helper 2 [Th2]cytokine) secretion.4 Mice with excessive hedgehog signaling also harbor increased NKT cells and develop increased

fibrosis in diet-induced nonalcoholic steatohepatitis (W. K. Syn et al., manuscript submitted). Indeed, Tajiri et al. noted increased NKT numbers among individuals with greater nonalcoholic steatohepatitis activity scores.5 In contrast to benign hepatic steatosis, there is increasing data supporting the concept that NKT cells accumulate with progressive fatty liver disease. In this study, NKT cell depletion was associated with elevated IL12 levels; conversely, NKT population was preserved in IL12 knockout mice. As suggested, additional factors are likely to be involved in determining the size of the hepatic NKT population. For example, NKT cells express cysteine-X-cysteine receptor 3 (CXCR3) and CXCR6; recruitment of NKT cells in steatotic liver is likely to be regulated by their associated ligands. In addition, because NKT cell viability is modulated by IL15,6 it would be important to determine if expression of IL15 alters with steatosis.

clinicaltrialsorg #NCT01002547) We believe that both ongoing tr

clinicaltrials.org #NCT01002547). We believe that both ongoing trials will help close some of our knowledge gaps. Ratziu et al. selleck kinase inhibitor clearly outline the shortcomings of TZDs in NASH and identify areas where more research is needed. Their review should encourage additional work and accelerate our understanding of the role of TZDs in the management of patients with NASH. Stephen

A. Harrison M.D.*, Steven Schenker M.D.†, Kenneth Cusi M.D.†, * Brooke Army Medical Center, Fort Sam Houston, TX, † The University of Texas Health Science Center at San Antonio, San Antonio, TX. “
“Clinical application of the prognostic gene expression signature has been delayed due to the large number of genes and complexity of prediction algorithms. In the current study we aimed to develop an easy-to-use risk

score with a limited number of genes that can robustly predict prognosis of patients with hepatocellular carcinoma (HCC). The risk score was developed using Cox coefficient values of 65 genes in the training set (n = 139) and its robustness was validated in test sets (n = 292). The risk score was a highly significant predictor of overall survival (OS) in the first test cohort (P = 5.6 × 10−5, n = 100) and the second test cohort (P = 5.0 × 10−5, n = 192). In multivariate analysis, the risk score was a significant risk factor among clinical variables examined together (hazard ratio [HR], 1.36; 95% confidence interval [CI], 1.13-1.64; P = 0.001 click here for OS). Conclusion: The risk score classifier we have developed can identify two clinically distinct Rucaparib HCC subtypes at early and late stages of the disease in a simple and highly reproducible manner across multiple datasets. (HEPATOLOGY 2011) Hepatocellular carcinoma (HCC) is the third leading cause of

cancer death worldwide and accounts for an estimated 600,000 deaths annually.1 Although surgical resection for HCC provides the best chance for a cure, the prognosis after surgery differs considerably among patients. Because of this clinical heterogeneity, predicting the recurrence or survival of HCC patients after surgical resection remains challenging. An accurate stratification reflecting the prognosis of HCC patients would help select the therapy with the potential to confer the best survival, so considerable effort has been devoted to establishing such a stratification (or staging) model for HCC by using clinical information and pathological criteria.2, 3 Currently, several clinical classification systems, including Cancer of the Liver Italian Program, the Barcelona-Clinic Liver Cancer (BCLC), the Chinese University Prognostic Index, and the Japanese Integrated Staging schema have been developed and used in clinics.4–7 Although these staging systems have proven useful,8 their predictive accuracy remains limited and they failed to provide biological characteristics of HCC that might account for the clinical heterogeneity.

clinicaltrialsorg #NCT01002547) We believe that both ongoing tr

clinicaltrials.org #NCT01002547). We believe that both ongoing trials will help close some of our knowledge gaps. Ratziu et al. http://www.selleckchem.com/products/r428.html clearly outline the shortcomings of TZDs in NASH and identify areas where more research is needed. Their review should encourage additional work and accelerate our understanding of the role of TZDs in the management of patients with NASH. Stephen

A. Harrison M.D.*, Steven Schenker M.D.†, Kenneth Cusi M.D.†, * Brooke Army Medical Center, Fort Sam Houston, TX, † The University of Texas Health Science Center at San Antonio, San Antonio, TX. “
“Clinical application of the prognostic gene expression signature has been delayed due to the large number of genes and complexity of prediction algorithms. In the current study we aimed to develop an easy-to-use risk

score with a limited number of genes that can robustly predict prognosis of patients with hepatocellular carcinoma (HCC). The risk score was developed using Cox coefficient values of 65 genes in the training set (n = 139) and its robustness was validated in test sets (n = 292). The risk score was a highly significant predictor of overall survival (OS) in the first test cohort (P = 5.6 × 10−5, n = 100) and the second test cohort (P = 5.0 × 10−5, n = 192). In multivariate analysis, the risk score was a significant risk factor among clinical variables examined together (hazard ratio [HR], 1.36; 95% confidence interval [CI], 1.13-1.64; P = 0.001 click here for OS). Conclusion: The risk score classifier we have developed can identify two clinically distinct selleck screening library HCC subtypes at early and late stages of the disease in a simple and highly reproducible manner across multiple datasets. (HEPATOLOGY 2011) Hepatocellular carcinoma (HCC) is the third leading cause of

cancer death worldwide and accounts for an estimated 600,000 deaths annually.1 Although surgical resection for HCC provides the best chance for a cure, the prognosis after surgery differs considerably among patients. Because of this clinical heterogeneity, predicting the recurrence or survival of HCC patients after surgical resection remains challenging. An accurate stratification reflecting the prognosis of HCC patients would help select the therapy with the potential to confer the best survival, so considerable effort has been devoted to establishing such a stratification (or staging) model for HCC by using clinical information and pathological criteria.2, 3 Currently, several clinical classification systems, including Cancer of the Liver Italian Program, the Barcelona-Clinic Liver Cancer (BCLC), the Chinese University Prognostic Index, and the Japanese Integrated Staging schema have been developed and used in clinics.4–7 Although these staging systems have proven useful,8 their predictive accuracy remains limited and they failed to provide biological characteristics of HCC that might account for the clinical heterogeneity.

Collectively, our findings indicate that the clinical course of H

Collectively, our findings indicate that the clinical course of HCC, even in very early (T1) and early stage (T2), varies widely and can be only partially predicted by current staging systems, which are mainly based on size and number of tumor nodules.21, 22 Differences in the clinical outcome of HCCs diagnosed at the same stage in patients with preserved liver function may reflect biological differences of the tumor and cirrhotic liver tissue.37, 38 This study also shows that mortality unrelated to cancer progression

has an important impact on the survival of HCC patients, who in Western countries are generally elderly.3, 4, 32 In conclusion, our ability to select optimal treatment strategies for patients with cirrhosis with HCCs is currently limited by three factors: (1) unpredictability of tumor progression and de novo carcinogenesis37,38; selleck chemical (2) tumor understaging14; and (3) substantial risk of HCC-unrelated death. Safe, effective, and minimally invasive treatments, thus, seem to be the most reasonable approach for HCC patients. Our experience indicates that RFA should be the treatment of choice for patients with one or two small HCCs, whereas surgical resection can be reserved for patients with preserved liver function whose tumors cannot be treated with RFA or in which RFA did not produce CR. It is important to recall

that RFA failure does not preclude subsequent R788 molecular weight surgical resection, whereas surgery can compromise the residual liver function, making subsequent RFA useless. On the other hand, neither RFA nor surgical resection is appropriate in the group of patients who, although successful treated for early/very-early (T1, T2) HCC, develop advanced nonlocal recurrences

shortly after treatment (Table 3). To improve our ability to define effective selleck chemicals individualized strategies for the management of this complex disease, future research should focus on the identification of tumor cell markers and/or genetic profiles associated with specific patterns of HCC growth. The authors thank all of the radiologists, pathologists, and surgeons who worked with us in the management of these patients for many years. We also thank Annalisa De Silvestri, M.D., for help provided in data analysis and Marian Everett Kent for editing the article. Ms. Kent received payment for this service from the IRCCS Policlinico San Matteo Foundation (Pavia, Italy). She has seen and approved the final version of the article and has no conflicts of interest to disclose. Additional supporting information may be found in the online version of this article. “
“Early complications after liver transplantation include bleeding, bile leaks, anastomotic and non-anastomotic biliary strictures, and hepatic artery or portal vein thrombosis.

Immunogenicity should

Immunogenicity should Pictilisib be investigated prior to marketing authorization and substantiated with postmarketing studies. The detection of neutralizing antibodies is dependent on the method of measurement

employed, and the standardization and optimization of assays used to quantify FVIII inhibitor levels is essential to the meaningful comparison of the results of inhibitor studies. The Nijmegen modification of the Bethesda assay has been recommended by the EMA as the gold standard in preauthorization studies and in postmarketing surveillance. A modification to the current Bethesda/Nijmegen method [3], which replaces FVIII deficient plasma with buffered normal plasma, promises to reduce the potential variability in the test. In addition, for the novel concentrates, additional assays such as an electro-chemiluminescent immunoassay and a radioimmunoassay have buy Galunisertib been used with high sensitivity for neutralizing and non-neutralizing antibodies [4, 5]. A Pediatric Investigational Plan (PIP) is required by the EMA in the assessment of new drugs to ensure that there is adequate information about how children fare on an experimental medication before it goes to market. The regulation

states that the submission of the PIP should occur no later than at the completion of human pharmacokinetic studies, which is interpreted by the EMA as the end of phase I of the clinical trials. In contrast, the FDA recommends paediatric studies as a postmarketing phase IV commitment. The demands of the EMA, regarding paediatric trials, place an excessive requirement on manufacturers of new haemophilia products, and threaten to create a delay in access to these therapies among adults with this disorder in Europe. The

number of children required for premarketing studies by the EMA amounts to at least 50 and 20 children for clinical trials in haemophilia A and B respectively. Given the rarity of haemophilia such paediatric trials will take years to complete. Therefore, these requirements need to be amended for rare disorders. A further proposal discussed by the ISTH SSC project group is to review alternative approaches to trial design for preauthorization studies with respect to safety, particularly selleckchem immunogenicity. The number of patients typically needed for preauthorization clinical trials is currently 100 for the EMA, and 80 for the FDA. The patient number required by the EMA has been selected by balancing the clinical data package needed to demonstrate efficacy and safety against the availability of patients suffering from a rare disease. The number of patients is expected to be adequate to provide relevant information on general safety aspects and to demonstrate the efficacy of a FVIII product in terms of its ability to restore FVIII levels and achieve haemostasis, i.e.