Nivolumab benefit in advanced head and neck cancer maintained regardless of age

The OS benefit observed with nivolumab compared with investigator’s choice of single-agent chemotherapy for patients with recurrent or metastatic head and neck squamous cell carcinoma who previously received platinum therapy occurred regardless of patient age, according to a post hoc analysis of the CheckMate 141 trial presented at Chemotherapy Foundation Symposium. In addition, objective response rates were higher with nivolumab (Opdivo, Bristol-Myers Squibb) among patients aged younger than 65 years, as well as those aged 65 years or older. Results of the phase 3 CheckMate 141 trial showed nivolumab, an anti-PD-1 antibody, significantly prolonged OS compared with investigator’s choice of single-agent chemotherapy among patients with recurrent or metastatic squamous cell carcinoma who underwent prior platinum therapy (median, 7.5 months vs. 5.1 months; HR = 0.7; 97.73% Ci, 0.51-0.96). Researchers observed the benefit at 1-year and 2-year follow-up, regardless of tumor PD-L1 expression or HPV status. In addition, after minimum follow-up of 24.2 months, incidence of grade 3 or grade 4 treatment-related adverse events was lower in the nivolumab group (15.3% vs. 36.9%). A considerable percentage of patients with HNSCC are aged 65 years or older, and they often have comorbidities that may limit their ability to tolerate chemotherapy. However, data on use of immune checkpoint inhibitors among elderly patients with HNSCC are lacking, according to study background. Nabil F. Saba, MD, FACP, professor in the department of hematology and medical oncology at Winship Cancer Institute at Emory University, and colleagues presented results of a post-hoc analysis of CheckMate 141 that explored outcomes based on patient age. The randomized, phase 3 trial included 361 patients with recurrent or metastatic HNSCC of the oral cavity, pharynx or larynx who experienced progression at least 6 months after platinum therapy in the adjuvant, primary, recurrent or metastatic setting. Researchers assigned 240 patients to nivolumab 3 mg/kg every 2 weeks. The other 121 patients received investigator’s choice of chemotherapy, which included methotrexate, docetaxel or cetuximab (Erbitux, Eli Lilly). OS served as the primary endpoint. Secondary endpoints included PFS, ORR, duration of response, safety, biomarkers and patient-reported quality of life. The post-hoc analysis included 113 patients aged 65 years or older (nivolumab, n = 68; chemotherapy, n = 45). Data cutoff was September 2017, and minimum follow-up was 24.2 months. Median duration of therapy did not differ significantly between patients aged younger than 65 years or 65 years and older in either treatment group. Article Source: https://www.healio.com/hematology-oncology/head-neck-cancer/news/online/34a8fb6b-c4d2-4ce9-bf06-4d0fb4c7df23/nivolumab-benefit-in-advanced-head-and-neck-cancer-maintained-regardless-of-age

Pomalidomide, low-dose dexamethasone active in multiple myeloma with renal impairment

根据发表于Journal of Clinical Oncology的 2期研究结果,泊马度胺加低剂量地塞米松改善了复发/难治性多发性骨髓瘤和中度至重度肾功能损害患者的反应。 该组合也表现出良好的耐受性。 “肾功能损害是多发性骨髓瘤的常见合并症。大约20%至30%的多发性骨髓瘤患者在诊断时出现肾功能损害,约10%需要透析,“ 雅典大学医学院临床治疗学教授兼主席Meletios Dimopoulos及其同事中写道。“随着时间的推移,患有多发性骨髓瘤的患者可能会出现肾功能损害,这与预后不良和生存期短有关。” 这些患者的中位OS为2年。 Dimopoulos及其同事在非比较性MM-013试验中招募了81名患有复发/难治性多发性骨髓瘤的患者(中位年龄72岁)。 研究人员将患者分为三组:中度肾功能损害(估计肾小球滤过率,30 mL / min / 1.73 m 2至45 mL / min / 1.73 m 2),严重肾功能损害(估计肾小球滤过率,小于30 mL / min) /1.73 m 2)或需要血液透析的严重肾功能损害。 患者经历了四次中位抗凝血症方案的中位数。 患者在第1天至第21天每天接受4mg 泊马度胺(Pomalyst,Celgene),并且在28天周期中每周一次接受20mg或40mg地塞米松。 总体响应率作为主要终点。中位随访时间为8.6个月。 中度肾功能不全患者的ORR为39.4%,严重损害患者为32.4%,需要血液透析的患者为ORR的14.3%。 中度肾功能不全患者的中位反应持续时间为14.7个月,严重肾功能不全患者为4.6个月。尚未达到需要血液透析的患者的中位反应时间。 所有中度肾功能不全患者均表现出疾病控制,而79.4%的严重肾功能不全患者和78.6%需要血液透析的严重肾功能不全患者表现出疾病控制。 中位操作系统是: 中度肾功能不全患者16.4个月; 严重肾功能不全患者11.8个月; 和 需要血液透析的严重肾功能不全患者需5.2个月。 研究人员观察到18.2%的中度损伤患者完全肾脏反应。 没有在基线需要血液透析的患者变得不依赖于透析。 数据截止时仍有13名患者继续接受治疗。 16%的患者出现需要减少剂量的不良事件。 最常见的3级或4级治疗相关不良事件包括中性粒细胞减少症(53.1%),贫血症(35.8%),感染(32.1%),血小板减少症(27.2%),疲劳(6.2%),高钾血症(6.2%),肾功能衰竭(6.2%),低钙血症(4.9%),发热(2.5%)和外周水肿(1.2%)。 “MM-013试验是第一项提供证据证明这些患者可以从泊马度胺加低剂量地塞米松治疗中获益的证据,并支持使用这种治疗复发/难治性多发性骨髓瘤和严重肾功能不全的患者,包括那些接受血液透析的人,“研究人员写道。“实现疾病控制和稳定具有重要的临床益处,特别是对于需要血液透析的患者。 “这里提供的结果增加了多发性骨髓瘤和肾功能不全晚期患者治疗选择的有限证据,并将帮助医疗保健提供者为这一患者群体做出适当的治疗选择,”他们补充说。 文章来源: https://www.healio.com/hematology-oncology/myeloma/news/in-the-journals/%7Bf2a2a191-ed73-4699-ac70-213db5008645%7D/pomalidomide-low-dose-dexamethasone-active-in-multiple-myeloma-with-renal-impairment

Imatinib Determined the Most Cost-Effective Frontline TKI for Chronic Myeloid Leukemia

Imatinib Determined the Most Cost-Effective Frontline TKI for Chronic Myeloid Leukemia The introduction of BCR-ABL1 tyrosine kinase inhibitors (TKIs) to the treatment of chronic myeloid leukemia (CML) dramatically changed long-term outcomes.1 Now, there are several TKI options, and optimal treatment selection can be challenging given differences in patient characteristics and cost of therapy. “While successful therapeutic outcomes and long-term survival are clearly the main goal of TKI treatment, patients are also faced with lifelong management of the financial aspects of being diagnosed with CML and affording treatment,” Giuseppe Saglio, MD, of the San Luigi Hospital in Turin, Italy, and Elias Jabbour, MD, of The University of Texas MD Anderson Cancer Center, Houston, wrote.1 Imatinib, a first-generation TKI that was approved by the US Food and Drug Administration (FDA) in 2002, dramatically improved survival compared with the previous standard of care, which was the combination of interferon-α and cytarabine. The 10-year overall survival (OS) with imatinib is estimated at 83% compared with a 5-year OS of 68% with interferon-α plus cytarabine.1 Since then, the second-generation TKIs have emerged — dasatinib was first approved by the FDA in 2006 and nilotinib in 2007. Both agents can induce faster and deeper treatment responses compared with imatinib, but the safety profiles differ, so must also be considered, particularly when selecting first-line therapy.2 Cost-effectiveness should also be measured, as expenses increase for both the patient and the payer as CML becomes a chronic disease. Cost-effectiveness analyses have been conducted that compare the TKIs to each other, but these results will change as generic formulations become available. In 2016, Gleevec (imatinib) lost its exclusivity, resulting in the introduction of the generic formulation of imatinib.1Dasatinib and nilotinib will lose their exclusivity in the coming years, which will further change the cost-effectiveness of these agents. Cost-effectiveness of TKIs for CML treatment is, therefore, a complex topic that requires consideration of multiple factors — not just apparent costs to payers. Article Source: 文章来源: https://www.cancertherapyadvisor.com/chronic-myeloid-leukemia/imatinib-determined-most-cost-effective-frontline-tki-chronic-myeloid-leukemia/article/812167/

Dose-Escalation Mitigates Risk of Grade 34 Adverse Events With Ruxolitinib for Myelofibrosis

Dose escalation may combat worsening anemia during early ruxolitinib therapy in patients with myelofibrosis, according to a recent study published in the Journal of Hematology and Oncology. Ruxolitinib improves splenomegaly and alleviates the symptoms of intermediate-2 or high-risk myelofibrosis. However, its use is associated with an increased risk of developing grade 3/4 anemia and/or thrombocytopenia, requiring additional dose reductions or transfusions. The authors of the study aimed to preserve clinical benefit, but reduce hematologic risk early during treatment using dose escalation. The study was an open-label phase 2 study of 45 patients with myelofibrosis, 68.9% of whom had a Dynamic International Prognostic Scoring System score of 1 to 2, indicating intermediate disease risk. Patients received ruxolitinib 10 mg twice daily with increases in increments of 5 mg at 12 weeks and 18 weeks for a maximum dose of 20 mg. Symptom severity was assessed using the Myelofibrosis Symptom Assessment Form Total Symptom Score. The median percentage change in spleen volume at 24 weeks from baseline was 17.3% with a clear dose response. Similarly, the median Myelofibrosis Symptom Assessment Form Total Symptom Score also showed a clear dose response and had a median percentage change of 45.6%. Incidence of grade 3/4 anemia (20%), dose decreases due to anemia (11.1%), or thrombocytopenia (6.7%) were uncommon. Other observed adverse effects were anemia (26.7%), fatigue (22.2%), and arthralgias (20%). According to the authors, “dose-escalation approach may mitigate worsening anemia during early ruxolitinib therapy in some patients with myelofibrosis.” Article Source: https://www.oncologynurseadvisor.com/myeloproliferative-neoplasms/dose-escalation-mitigates-adverse-events-with-ruxolitinib-for-mf/article/814455/

Adrenal Cancer Treatment

Following a diagnosis of adrenal cancer, there are several treatment options that may be used. Each of these techniques has unique advantages and disadvantages that will make it preferable for some cases and not others. As adrenal cancer is relatively rare, it can be worthwhile to collaborate with other endocrine specialists to discuss the best treatment options for the particular case. The treatment of adrenal cancer typically involves a multidisciplinary team a may include surgeons, endocrinologists, radiation oncologists, medical oncologists, nurses, psychologists, social workers, and other health professionals. Surgery The most common treatment for adrenal cancer is adrenalectomy or surgical removal of the adrenal gland. In this procedure, the cancer is removed as much as possible, including areas where the cancer has spread to such as nearby lymph nodes. The procedure can be performed in two main ways: through an incision in the back below the ribs or an incision in the front of the abdomen. The incision in the back is useful to remove small tumors but can be difficult for larger tumors. As such, the incision in the front of the abdomen is the most common method used in practice. If the cancer has metastasized to other areas of the body, such as the liver, surgical removal of these secondary tumors may also be needed. For small adrenal tumors, a laparoscope can also be inserted into the adrenal gland to view the tumor and remove it. This is most commonly used for smaller tumors and helps to reduce recovery time. However, it cannot be used for larger tumors as the whole tumor should be removed in one piece to reduce the risk of recurrence. Radiation therapy Radiotherapy, which involves a focused beam of high-energy radiation, can be used to target the region of the cancerous cells in the adrenal gland. This is usually used as adjuvant therapy, in addition to other techniques such as surgery. There are two main types of radiation therapy that may be used: external beam radiation therapy and internal radiation therapy (brachytherapy). External beam radiation therapy uses a machine outside of the body to direct the radiation towards the adrenal gland. The radiation is usually administered once or twice a day, five days a week for a treatment period of approximately 6 weeks. In this type of radiation therapy, the surrounding tissue that the radiation passes through before it reaches the tumor is also affected. Treatment times are kept short to minimize this, but some adverse effects may be experienced. Internal radiation therapy, also known as brachytherapy, uses small pellets of radioactive material, which are placed inside the body next to or inside the tumor. This is usually left inside the body for a few days then removed. The localization of the radiation helps to reduce exposure to the surrounding tissues. Chemotherapy Chemotherapy for patients with adrenal cancer may be administered via intravenous injection or oral medications. This technique is usually reserved for patients with stage 4 adrenal cancers because it can help to destroy cancer cells in several parts of the body simultaneously. For cancer contained in the adrenal gland, surgical removal is usually preferred. Mitotane is a common chemotherapeutic agent used for adrenal gland because it can block adrenal gland hormone production and destroys cancers cells. It is particularly useful for cancers caused by excessive hormone production. Like other chemotherapeutic agents, it also destroys some healthy cells in this process. Other chemotherapeutic agents, which are often used in combination with mitotane, may include: Cisplatin Doxorubicin Etoposide Streptozocin Paclitaxel 5-fluorouracil Vincristine Other medications There are several other medications that may be used in the treatment of adrenal cancer, primarily to reduce the production of hormones related to the tumor. These may include: Ketoconazole and Metyrapone to reduce the production of adrenal steroid hormones Spironolactone to decrease the effects of aldosterone Mifepristone to decrease the effects of cortisol Tamoxifen, Toremifene, and Fulvestrant to block the effects of estrogen Article Source: https://www.news-medical.net/health/Adrenal-Cancer-Treatment.aspx

RV Hemodynamics Improved With Riociguat in Pulmonary Arterial Hypertension

SAN ANTONIO — Riociguat is associated with improvements in right ventricular (RV) function in patients with pulmonary arterial hypertension(PAH) compared with placebo, according to a study presented at the CHEST Annual Meeting, held October 6-10, 2018, in San Antonio, Texas. Riociguat improved functional measures such as the 6-minute walk distance (6MWD), World Health Organization functional class, and N-terminal pro-brain natriuretic peptide in the PATENT-1 study (ClinicalTrials.gov Identifier: NCT00810693). The agent also demonstrated improvements in hemodynamic parameters, including pulmonary vascular resistance (PVR) and cardiac index (CI). “However, mortality in PAH is usually related to RV failure and so we performed a post hoc analysis to determine if riociguat improved hemodynamic parameters of RV function in PATENT-1,” researchers noted. Patients with PAH and a 6MWD between 150 and 450 m, PVR of >300 dyn⋅s⋅cm−5, and mean pulmonary arterial pressure (mPAP) of ≥25 mm Hg at baseline were enrolled. The investigators randomly assigned patients to either riociguat at up to 2.5 mg 3 times daily (n=254) or placebo (n=126) for a 12-week treatment period. At 12-week follow-up, the researchers performed right heart catheterization, and stroke volume (SV, mL), stroke volume index (SVI, mL/m2), RV work (cardiac output × mPAP × 0.0144), RV work index (CI × mPAP × 0.0144), RV power (mPAP × CI), cardiac efficiency (SV/mPAP), and pulmonary artery (PA) elastance (systolic pulmonary artery pressure/SV) were assessed. At 12-week follow-up, riociguat was associated with increases in RV work (+0.30 ±0.78), RV work index (+0.17 ±0.46), RV power (+0.05 ±0.12), SV (+10.63 ±13.68), SVI (+6.16 ±7.87), and cardiac efficiency (+0.44 ±0.60) from baseline. Additionally, treatment with riociguat demonstrated a decrease in PA elastance (–0.34 ±0.53). Patients who received placebo had decreases in RV work (–0.10 ±0.94), RV work index (–0.07±0.57), RV power (–0.02±0.15), and SVI (–0.04±9.52) at 12 weeks compared with baseline. Placebo was also associated with increases in PA elastance (+0.02±0.65), SV (+0.33±16.30), and cardiac efficiency (+0.09±0.57). Article Source: https://www.pulmonologyadvisor.com/chest-2018/pulmonary-arterial-hypertension-riociguat-right-ventricular-hemodynamics/article/805972/

Modafinil or Amantadine: Who Decides?

Fatigue. That No. 1 symptom that a large majority of people with multiple sclerosis are affected by. MS fatigue. It can be crushing, numbing, and stop the hardiest person in their tracks. I know MS fatigue all too well because it affects me all the time. Combating MS fatigue What causes MS fatigue isn’t exactly known, but there are lots of educated guesses. It might be because it is a challenge to do anything physical and remain upright, thanks to balance problems. Or with MS, it is just exhausting to move because it takes extra effort for our central nervous system to get the right message. It could be a side effect of the medicines we take for other symptoms. It very well could be tied to depression, another common problem for people with MS. The list of possible causes of MS fatigue is lengthy. Whatever the cause, we’re fortunate if we find something that helps us with fatigue. That help can come in the form of pharmaceuticals, although no FDA-approved therapy for MS fatigue exists. Everything we take for MS fatigue is done off-label, meaning it hasn’t been thoroughly studied for use in rigorous scientific trials. I’ve been fortunate to have been prescribed modafinil (also known by the brand name Provigil) for over four years. While it isn’t perfect, it does keep me going through the day and it is obvious when I skip a dose. My energy reserve is depleted within a few hours of getting out of bed if I don’t take this medication. Modafinil is not an amphetamine, but it is a therapy approved for people who do shift-work through the night and need help with sleep disorders. It doesn’t work for everyone, but it does work for me. I’ve also been fortunate to have this therapy available because people are often refused access as it isn’t an official multiple sclerosis medication. Prescription changes You can imagine my surprise and dismay when I received a call from my neurologist’s nurse today to let me know that my prescription refill for modafinil had been denied. I have a new pharmaceutical provider and am no longer in the Express Scripts system. Instead, I have Caremark, a division of CVS drugs. The CVS Caremark folks, whoever it is that makes the decisions, want me to try amantadine in place of modafinil. I wasn’t even familiar with this medication and am surprised to see it is an antiviral medicine used to treat influenza A symptoms and off-label for Parkinson’s disease and movement disorders. Of course, this has me confused — I don’t see the connection with this recommended treatment and my MS fatigue. I find online notes that it is used off-label, but it has a low efficacy rate in helping with MS fatigue. I was so caught off-guard by the phone call from the MS nurse, that I told her no, I don’t want to make the change and that she should appeal the insurance decision. I have success with modafinil and it makes no sense that I should change up therapies. As we have all been told over and over,if it ain’t broke, don’t fix it.Modafinil works for me, so why would I change? Comparing costs I can only hypothesize that the bottom line for their decision is money. A three-month supply of modafinil had been billed to my previous drug provider at about $4,500 (I take two a day over 90 days, or 180 tablets). Of course, the insurance company doesn’t pay this much, but this is the list price for a generic drug. According to GoodRx, a website that specializes in helping people find the best pricing on prescriptions, the average cost of amantadine at the time of this writing is $120 for 180 capsules at Costco, a warehouse shopping club. The average price at Costco for 180 modafinil tablets is $175. I have no idea why modafinil costs more, but should that be the factor that determines denial of a therapy that works? If Costco can sell me my 90-day prescription directly for $175, why did Express Scripts show that same cost at $4,500? It’s an easy leap to guess my new pharmacy insurance wants me to change treatments to save them money, even though it’s a therapy that works for me. It’s broke — fix it The prices shouldn’t be this far-ranging. Instead of the insurance provider, my doctor and I should decide what treatments I take. I’m now forced to wait and see the results of engaging Caremark in this appeal and hope I am not forced to stop taking this drug that makes a huge difference for my fatigue. Our system for prescription drugs, the ease of access to them, and who decides which ones we are allowed to take is broken. Isn’t it time for it to be fixed? Article Source:

FLAMSA versus busulfan/fludarabine conditioning for acute myeloid leukemia patients

2018年7月19日 代表的的EBMT的急性白血病工作组(ALWP),托马斯·海尼克从奥托-冯-格里克大学,马格德堡,德国,和他的同事回顾性分析(AML)患者在第一或第二完全缓解CR1急性髓性白血病的结果(或CR2)在白消安/氟达拉滨(BuFlu)后进行异基因造血干细胞移植(allo-HSCT),顺序FLAMSA(氟达拉滨+ Ara-C + amsacrine化疗),然后是环磷酰胺加全身照射(FLAMSA-TBI)或环磷酰胺加白消安(FLAMSA-Bu)调理。该研究发表在“骨与骨髓移植生物学”的印刷版之前。 数据来自EBMT登记处的ALWP。在2005年1月至2016年6月期间,在CR1或CR2中接受allo-HSCT的AML患者被纳入分析。患者接受BuFlu(n = 1,197;中位年龄= 58.8岁[范围,20.1-76])或FLAMSA-TBI(n = 258;中位年龄= 47岁[范围,18.1-66.8])或FLAMSA-Bu(n = 141;中位年龄= 59.6岁[范围,19.6-74.4])。 该研究的主要终点是无白血病生存(LFS)。次要终点包括总生存期(OS),精确移植物抗宿主病无生存期,无复发生存期(GRFS),中性粒细胞植入,急性和慢性移植物抗宿主病(GvHD),复发率(RI)和非复发死亡率(NRM)。 主要发现: 中位随访:24.72个月 BuFlu vs FLAMSA-TBI vs FLAMSA-Bu组: 2年LFS:53.6%vs 61.6%vs 50.1%,P = 0.03 2年OS:60%vs 68.3%vs 56.4%NS GRFS:40.2%vs 46.9%vs 38.1%,NS 中性粒细胞移植:99.75%对 97.7%对 97.1%,P <0.001 RI:30.3%vs 21.9%vs 23.1%,P <0.01 2年NRM:16.1%vs 16.4%vs 26.7%,P <0.01 allo-SCT后第100天急性GvHD II-IV级和II-IV级累积发生率:分别为22.9%(95%CI,20.8-20.5)和9.1(95%CI,7.7-10.6) BuFlu和FLAMSA队列中的急性GvHD:21.1%对 26.9%,P <0.001 慢性GvHD的2年累积发病率:34%(95%CI,31.4-36.5) FLAMSA-TBI与BuFlu比较显示复发率较低(RI):HR = 0.64(95%CI,0.42-0.98),P = 0.04 FLAMSA-TBI与BuFlu比较显示优越的LFS:HR = 0.72(95%CI,0.49-1.06),P = 0.09 总之,这些发现表明,与移植于CR1或CR2的AML患者中的BuFlu相比,FLAMSA-TBI导致较低的复发发生率。该研究的主要局限性包括其回顾性以及施用GvHD预防的异质性。作者指出,需要进行前瞻性研究以进一步评估FLAMSA方案。 参考 与第一次或第二次完全缓解的AML患者相比,使用FLAMSA-RIC调节的复发率降低与Busulfan / Fludarabine相比 – 来自EBMT的急性白血病工作组的研究。Biol血髓移植。2018年7月12日.DOI:1016 / j.bbmt.2018.07.007。[印刷前的电子版]。 文章来源 http://www.amlglobalportal.com/medical-information/flamsa-versus-busulfan-fludarabine-conditioning-for-acute-myeloid-leukemia-patients

Safety evaluation of adenovirus type 4 and type 7 vaccine live, oral in military recruits

Before the widespread adoption of vaccination, adenovirus type 4 and type 7 were long associated with respiratory illnesses among military recruits. When supplies were depleted and vaccination was suspended in 1999 for approximately a decade, respiratory illnesses due to adenovirus infections resurged. In March 2011, a new live, oral adenovirus vaccine was licensed by the US Food and Drug Administration and was first universally administered to military recruits in October 2011, leading to rapid, dramatic elimination of the disease within a few months. As part of licensure, a postmarketing study (Sentinel Surveillance Plan) was performed to detect potential safety signals within 42days after immunization of military recruits. This study retrospectively evaluated possible adverse events related to vaccination using data from the Armed Forces Health Surveillance Branch Defense Medical Surveillance System (DMSS) database. Among 100,000 recruits who received the adenovirus vaccine, no statistically significant greater risk of prespecified medical events was observed within 42days after vaccination when compared with a historical cohort of 100,000 unvaccinated recruits. In an initial statistical analysis of International Classification of Disease, 9th Revision, Clinical Modification codes, a statistically significant higher risk for 19 other (not prespecified) medical events occurring in 5 or more recruits was observed among vaccinated compared with unvaccinated groups. After case record data abstraction for attribution and validation, two events (psoriasis [21 vs 7 cases] and serum reactions [12 vs 4 cases]) occurred more frequently in the vaccinated cohort. A causal relation of these rare events with adenovirus vaccination could not be established given confounding factors in the DMSS, such as coadministration of other vaccines and incomplete or inaccurate medical information, for some recruits. Prospective surveillance assessing these uncommon, but potentially relevant, immune-related symptoms may be beneficial in defining potential causal association with adenovirus vaccination.

Nesipide Chinese Description

Description Natrecor® (Nexitide) is a novel drug, a sterile preparation of human B-type natriuretic peptide (hBNP), prepared from E. coli using recombinant DNA techniques. The molecular weight of nesiceptin is 3464g / mol, and the empirical formula is C143H244N50O42S4. Nesiritide has the same 32 amino acid sequence as the endogenous peptide, which is produced by the ventricular myocardium. Natrecor is formulated as a citrate salt of rhBNP and is provided in a sterile disposable vial. Each 1.5 mg vial contains a white to off-white lyophilized powder for intravenous (IV) administration after reconstitution. The quantitative composition of each bottle of lyophilized drug was: 1.58 mg of nesiceptin, 20.0 mg of mannitol, 2.1 mg of citric acid monohydrate, and 2.94 mg of sodium citrate dihydrate. The mechanism of action of human BNP binds to the granule guanylate cyclase receptor of vascular smooth muscle and endothelial cells, resulting in increased intracellular concentrations of guanosine 3'5'-cyclic monophosphate (cGMP) and smooth muscle cell relaxation. Circulating GMP acts as a second messenger to dilate veins and arteries. Nesiritide has been shown to relax isolated arterial and venous tissue preparations that pre-contract with endothelin-1 or the alpha-adrenergic agonist phenylephrine. In human studies, nesiritide produced a dose-dependent reduction in pulmonary capillary wedge pressure (PCWP) and systemic arterial pressure in patients with heart failure. In animals, nesiritide has no effect on cardiac contractility or cardiac electrophysiological measurements, such as atrial and ventricular effective refractory time or atrioventricular node conduction. The naturally occurring atrial natriuretic peptide (ANP) is a related peptide that increases vascular permeability in animals and humans and reduces the amount of vascular content. The effect of nesiceptin on vascular permeability has not been studied. Pharmacokinetics In patients with congestive heart failure (CHF), Natrecor administered intravenously by infusion or bolus showed biphasic treatment from plasma. Natrecor's average terminal elimination half-life (t1 / 2) is approximately 18 minutes and is associated with approximately 2/3 of the area under the curve (AUC). The average initial elimination phase is estimated to be approximately 2 minutes. In these patients, the average volume of the Natrecor central chamber (Vc) was estimated to be 0.073 L / kg, the mean steady-state volume (Vss) was 0.19 L / kg, and the mean clearance (CL) was about 9.2 ml / min / kilogram. At steady state, plasma BNP levels increased approximately 3- to 6-fold from baseline endogenous levels, and Natrecor infusion doses ranged from 0.01 to 0.03 μg/kg/min. Elimination of clearance from human BNP by three independent mechanisms, reduced importance: 1) binding to cell surface clearance receptors, followed by cell internalization and lysosomal proteolysis; 2) by endopeptidases (eg neutral endopeptides) Enzyme) proteolytic cleavage of the peptide, the endopeptidase is present on the surface of the vascular lumen; 3) renal filtration. In the special population, although the Natrecor part was eliminated by renal clearance, clinical data indicate that patients with renal insufficiency do not need to adjust the dose. Natrecor's effects on PCWP, cardiac index (CI), and systolic blood pressure (SBP) were not significantly different in patients with chronic renal insufficiency (baseline serum creatinine range of 2 mg/dL to 4.3 mg/dL) and patients. Renal function is normal. Population pharmacokinetic (PK) analysis was performed to determine the effect of demographic and clinical variables on PK parameters, indicating that Natrecor's clearance is proportional to body weight and supports the weight-adjusted dose of Natrecor (ie, in μg/give Medicine) kg / min (basis). Age, gender, race/ethnicity, baseline endogenous hBNP concentration, CHF severity (as indicated by baseline PCWP, baseline C1 or New York Heart Association [NYHA] classification) or concurrent administration of ACE inhibitors had no significant effect on clearance . Concomitant drug effects The co-administration of Natrecor with enalapril had no significant effect on Natrecor's PK. The PK effect of Natrecor in combination with other IV vasodilators such as nitroglycerin, sodium nitroprusside, milrinone or IV ACE inhibitors has not been evaluated. Natrecor is used concurrently with other drugs during clinical studies, including: diuretics, digoxin, oral ACE inhibitors, anticoagulants, oral nitrates, statins, class III antiarrhythmic drugs, beta-receptors Blockers, dobutamine, calcium channel blockers, angiotensin II receptor antagonists, and dopamine. Although there is no specific assessment of PK interactions, there appears to be no evidence of any clinically significant PK interaction. Pharmacodynamics Natrecor's recommended dosing regimen is an intravenous bolus of 2 μg/kg followed by an intravenous infusion of 0.01 μg/ Read more...

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