Motif Bio是一家专注于新型抗生素研发的临床阶段生物制药公司。近日，该公司宣布，美国食品和药物管理局（FDA）已授予新型抗生素iclaprim治疗囊性纤维化（CF）患者金黄色葡萄球菌肺部感染的孤儿药地位。

在美国，罕见病是指患病人群少于20万的疾病类型。开发罕见病药物的制药公司将获得相关激励措施，包括各种临床开发激励措施，如临床试验费用相关的税收抵免、FDA用户费减免、临床试验设计中FDA的协助，以及药物获批上市后为期7年的市场独占期。

Motif Bio公司首席执行官Graham Lumsden表示，金黄色葡萄球菌，包括耐甲氧西林金黄色葡萄球菌（MRSA），是CF患者肺部感染最常见的原因之一。目前，还没有任何抗生素获批用于这一适应症。据估计，约有80%或更多的CF患者死于多种细菌引起的呼吸道感染，而MRSA感染近年来不断增加。该公司正在进行配方开发工作，探索潜在的静脉注射和吸入性配方，专门用于CF患者群体。

目前，Motif Bio一直在慢性肺MRSA感染动物模型中调查iclaprim，该模型模拟了在CF患者肺部观察到的病理学。这些数据将提交至2017年10月6日在圣地亚哥举行的IDWeek。

iclaprim是一种新型抗生素，其作用机理与目前的大多数其他抗生素作用机理均不相同。该药旨在开发用于针对其他抗生素（包括甲氧苄氨嘧啶，trimethoprim）已产生抗药性的细菌感染的治疗。在体外试验中，iclaprim针对多属葡萄球菌革兰氏阳性临床分离株均表现出强大的活性，包括甲氧西林敏感的金黄色葡萄球菌（MSSA）和耐甲氧西林金黄色葡萄球菌（MRSA）。

iclaprim可以快速抑制细菌增殖，在体外可以于4-6小时内杀死99%的MRSA，而万古霉素需要8-10小时。迄今为止，iclaprim已经在超过1300名患者及健康志愿者身上进行了研究。

在临床研究中，iclaprim通过静脉输注以固定剂量给药，在伴有肾功能损害的患者或肥胖患者中无需剂量调整，这可能有助于降低整体医院治疗费用，尤其是肾功能受损的患者。

iclaprim

Treatment for Skin and Structure Infection

Facebook Twitter Google Plus Email to a friend Print this page

NEW YORK, June 14, 2018 (GLOBE NEWSWIRE) -- Motif Bio plc (AIM:MTFB) (NASDAQ:MTFB), a clinical-stage biopharmaceutical company specialising in developing novel antibiotics, today announced the completion of its rolling submission of a New Drug Application (NDA) to the U.S. Food & Drug Administration (FDA) for iclaprim, a targeted, Gram-positive investigational antibiotic, for the treatment of acute bacterial skin and skin structure infections (ABSSSI).

“The NDA submission for iclaprim is a major milestone for Motif Bio. Our team of experts has worked tirelessly to achieve this important goal,” said Graham Lumsden, Chief Executive Officer. “We look forward to working with the FDA with the goal of bringing this antibiotic candidate to patients as expeditiously as possible.”

Iclaprim has received Qualified Infectious Disease Product (QIDP) designation from the FDA together with Fast Track Designation. Upon acceptance of the filing of the NDA by the FDA, iclaprim will receive Priority Review, a review period of six months instead of the standard ten months. If iclaprim is approved as a new chemical entity with QIDP designation, it will be eligible for 10 years of market exclusivity in the U.S. starting from the date of approval.

Iclaprim is a novel investigational antibiotic with a targeted Gram-positive spectrum of activity. In contrast to commonly used broad-spectrum antibiotics, this “precision medicine approach” is consistent with antibiotic stewardship principles which, among other things, seek to reduce the inappropriate use of broad-spectrum products to avoid the build-up of resistance and to lessen the impact on the microbiome of the patient.

Iclaprim has a different and underutilised mechanism of action compared to most other antibiotics. Following positive results from two Phase 3 trials (REVIVE-1 and REVIVE-2), a New Drug Application (NDA) has been submitted to the U.S. Food & Drug Administration (FDA) for the treatment of acute bacterial skin and skin structure infections (ABSSSI). To date, iclaprim has been studied in over 1,400 patients and healthy volunteers. Clinical and microbiological data indicate that iclaprim has a targeted Gram-positive spectrum of activity, low propensity for resistance development and favourable tolerability profile. In clinical studies, iclaprim has been administered intravenously at a fixed dose with no dosage adjustment required in patients with renal impairment or in obese patients. The iclaprim fixed dose may, if approved, help reduce the resources required in hospitals since dosage adjustment by health care professionals is avoided and overall hospital treatment costs may be lower, especially in patients with renal impairment. Many standard of care Gram-positive antibiotics are not suitable for hospitalized ABSSSI patients with renal impairment due to efficacy and/or safety issues.

Motif Bio plc (AIM:MTFB) (NASDAQ:MTFB) is a clinical-stage biopharmaceutical company focused on developing novel antibiotics for hospitalised patients and designed to be effective against serious and life-threatening infections caused by multi-drug resistant bacteria, including MRSA. The Company’s lead product candidate is iclaprim. Following positive results from two Phase 3 trials (REVIVE-1 and REVIVE-2), an NDA has been submitted to the U.S. FDA for the treatment of acute bacterial skin and skin structure infections (ABSSSI). More than 3.6 million patients with ABSSSI are hospitalised annually in the U.S. It is estimated that up to 26% of hospitalized ABSSSI patients have renal impairment. The Company believes, based on the data from the Phase 3 REVIVE studies, that iclaprim may be suitable for first-line empiric therapy in ABSSSI patients, including those with renal impairment, with or without diabetes.

The Company also plans to develop iclaprim for hospital acquired bacterial pneumonia (HABP), including ventilator associated bacterial pneumonia (VABP), as there is a high unmet need for new therapies in this indication. A Phase 2 trial in patients with HABP has been successfully completed and a Phase 3 trial is being planned. Additionally, iclaprim has been granted orphan drug designation by the FDA for the treatment of Staphylococcus aureus lung infections in patients with cystic fibrosis and is in preclinical development for this indication.

Iclaprim has received Qualified Infectious Disease Product (QIDP) designation from the FDA together with Fast Track status. Upon acceptance by the FDA of an NDA, iclaprim will receive Priority Review status and, if approved as a New Chemical Entity, will be eligible for 10 years of market exclusivity in the U.S. from the date of first approval, under the Generating Antibiotic Incentives Now Act (the GAIN Act). In Europe, 10 years of market exclusivity is anticipated.

Forward-Looking Statements

This press release contains forward-looking statements. Words such as “expect,” “believe,” “intend,” “plan,” “continue,” “may,” “will,” “anticipate,” and similar expressions are intended to identify forward-looking statements. Forward-looking statements involve known and unknown risks, uncertainties and other important factors that may cause Motif Bio’s actual results, performance or achievements to be materially different from any future results, performance or achievements expressed or implied by the forward-looking statements. Motif Bio believes that these factors include, but are not limited to, (i) the timing, progress and the results of clinical trials for Motif Bio’s product candidates, (ii) the timing, scope or likelihood of regulatory filings and approvals for Motif Bio’s product candidates, (iii) Motif Bio’s ability to successfully commercialise its product candidates, (iv) Motif Bio’s ability to effectively market any product candidates that receive regulatory approval, (v) Motif Bio’s commercialisation, marketing and manufacturing capabilities and strategy, (vi) Motif Bio’s expectation regarding the safety and efficacy of its product candidates, (vii) the potential clinical utility and benefits of Motif Bio’s product candidates, (viii) Motif Bio’s ability to advance its product candidates through various stages of development, especially through pivotal safety and efficacy trials, (ix) Motif Bio’s estimates regarding the potential market opportunity for its product candidates, and (x) the factors discussed in the section entitled “Risk Factors” in Motif Bio’s Annual Report on Form 20-F filed with the SEC on April 10, 2018, which is available on the SEC’s web site, www.sec.gov. Motif Bio undertakes no obligation to update or revise any forward-looking statements.

Source: Motif BioSciences Inc.

Posted: June 2018