Anaerobic bacteria cultured from CF airways correlate to milder disease-a multisite study

Anaerobic and aerobic bacteria were quantitated in respiratory samples across three cystic fibrosis (CF) centres using extended culture methods. Subjects, ages 1–69 years, who were clinically stable provided sputum (n=200) or bronchoalveolar lavage (n=55). Eighteen anaerobic and 39 aerobic genera were cultured from 59% and 95% of samples, respectively; 16/57 genera had a ≥5% prevalence across centres. Analyses of microbial communities using co-occurrence networks in sputum samples showed groupings of oral, including anaerobic, bacteria whereas typical CF pathogens formed distinct entities. Pseudomonas was associated with worse nutrition and F508del genotype, whereas anaerobe prevalence was positively associated with pancreatic sufficiency, better nutrition and better lung function. A higher ratio of total anaerobe/total aerobe colony forming units was associated with pancreatic sufficiency and better nutrition. Subjects grouped by factor analysis who had relative dominance of anaerobes over aerobes had milder disease compared to a Pseudomonas-dominated group with similar proportions of subjects being homozygous for F508del. In summary, anaerobic bacteria occurred at an early age. In sputum producing subjects anaerobic bacteria were associated with milder disease suggesting that targeted eradication of anaerobes may not be warranted in sputum producing CF subjects.

Full article here.

£11 million-a-year US pharmaceutical boss is accused of trying to ‘blackmail’ Theresa May into buying cystic fibrosis drug

By Stephen Adams and Glen Owen

The boss of a US pharmaceutical giant was last night accused of trying to ‘blackmail’ Theresa May into buying a groundbreaking drug at an eye-watering annual cost of £100,000 per patient.

Thousands of people with the deadly lung condition cystic fibrosis (CF) have been pleading with NHS bosses to strike a deal with Vertex over Orkambi, a new treatment that could extend their lives by years.

The talks collapsed acrimoniously ten days ago, after which Vertex boss Dr. Jeff Leiden wrote to the Prime Minister threatening to scale back the firm’s investment in the UK unless NHS England agreed to buy Orkambi on its terms.

In an extraordinary outburst, Dr. Leiden accused Britain of placing ‘a lower value on the life of a CF patient than other countries’ which have purchased Orkambi, and warned that British jobs relied on his benevolence.
The row comes amid growing anger among health chiefs about how the ‘profiteering’ of drugs companies is heaping pressure on the NHS budget.

The starting price for Orkambi negotiations is thought to be £104,000 per patient per year.

Tory MP Bob Stewart said: ‘Drug companies have every right to turn a profit to fund their vital research and development work, but it is completely immoral to overcharge for a life-saving drug. If the CEO is trying to blackmail the Prime Minister that is utterly disgraceful.’

In his letter to Mrs. May, Dr. Leiden, who received £11 million in salary and stock options last year, wrote: ‘Vertex is heavily committed to the UK with its international HQ in London, an R&D site near Oxford and runs many clinical trials in the NHS. Since 2006, Vertex has invested over £1.2 billion in the UK and now employs 250 people, of whom over 110 are scientists.’

But he added: ‘We are questioning this ecosystem as [the UK] is unable to value life-changing medicines for the patients that need them.’ Without major changes to how new drugs were assessed, he pointedly warned that ‘any future biotech investment in the UK is at significant risk’.

In 2014, Dr. Leiden, who owns a string of waterfront homes in Massachusetts and Florida, faced a shareholder revolt over his ‘exorbitant’ pay package of almost £35 million. Orkambi is the only current therapy that slows the inevitable progression of CF. It could benefit up to half of the 10,500 Britons with the condition.

CF causes lungs to produce too much mucus, reducing their effectiveness. Around half of sufferers die before the age of 47, but Orkambi has been shown to boost lung function by 42 percent.

Catherine Upstone, from Brackley, Northamptonshire, whose daughter Cerys, 14, is one of those who could benefit from Orkambi, said: ‘The two sides need to get back around the table.’

But NHS England boss Simon Stevens recently told MPs that Vertex must first drop its price.

‘Right now, the company is a very long way from acting responsibly,’ he said. ‘The implication of the kinds of prices that are being talked about would either be to deny patients those drugs or to rip off British taxpayers, and neither of those situations is acceptable.’

Vertex’s chief commercial officer Stuart Arbuckle said the firm had made NHS England ‘the best offer in the world, which provides all eligible patients immediate access to our current and future medicines. However, the NHS wants our existing medicines and those coming down the line in the next year for no extra money – this is essentially asking for our medicines for free.’

NHS England said: ‘If Vertex believes they are offering a reasonable deal, they should waive their confidentiality clause and let patients and taxpayers judge whether it is fair.’

Original article here.

CF Foundation ‘Venture Philanthropy’ Model Crucial to CF Breakthroughs

By Larry Luxner

When the Cystic Fibrosis Foundation (CFF) was established in 1955, most people with cystic fibrosis (CF) didn’t make it to their sixth birthday. Today, the average life expectancy of a CF patient is 47 years.

To date, the U.S. Food and Drug Administration has approved 12 CF therapies. Three of them are CFTR modulators that treat the basic disease-causing defect, benefiting 60 percent of all patients, and more therapies are on the way.

Preston W. Campbell III, the CFF’s president and CEO, directly attributes this dramatic improvement to the foundation’s philosophy of “venture philanthropy.”

“We are now in Phase 3 CFTR trials that, if successful, will mean that as early as next year, more than 90 percent of all individuals with CF will have a highly effective therapy targeting CF’s basic defect,” he said. “More therapies that treat the complications of CF are in the pipeline than ever before.

“It begs the question: how did all of this happen?”

Campbell answered that during his March 26 presentation, “Patient advocates taking a real stand in drug development: How the CFF worked with biotech and pharma to find a cure,” at the 2018 World Orphan Drug Congress USA in Oxon Hill, Maryland.

Back in 1960, the Bethesda, Maryland-based foundation broke ground by establishing a Care Center Network to provide multidisciplinary care. Within five more years, it had formed a patient registry.

With only $400,000 in the bank, it would also commit $11 million to research, Campbell said. “Five years later, in 1985, the basic CF defect was identified, and in 1989, the CFTR gene was discovered. That opened the floodgates,” he added.

Campbell’s predecessor, Robert J. Beall, created the Therapeutics Development Program — now called its Venture Philanthropy Model — in 1998 to entice industry to focus on CF, and specifically on CFTR as a target. Its three components were financial assistance, research tools and scientific advice, and a clinical trials network.

“We would lower the risk for industry to come into the CF space. We also made our research tools and scientific advice freely available, and we also embedded the best scientists in the world in these industry programs,” said Campbell, who took over from Beall as head of the CFF in January 2016. “Finally, in order to make sure clinical trials were safely and efficiently done, we created a clinical trials network that originally had seven centers and now has 89.”

In the beginning, CFF’s investments were typically in the $1.5 million range. Ultimately, the foundation invested more than $100 million in Aurora and its successor, Vertex Pharmaceuticals, whose headquarters are in Boston.

To date, the FDA has approved three Vertex CFTR modulators: Kalydeco (ivacaftor) for patients with the G551D mutation in the CFTR gene (2012); Orkambi (lumacaftor/ivacaftor)for patients who are homozygous for F508del, the most common mutation in the CFTR gene (2015); and Symdeko (tezacaftor/ivacaftor) for homozygous F508del patients as well as others (2018).

“Payments are milestone-based, so we pay for success,” Campbell said. “A scientific advisory committee determines if milestones are met and if the project should continue. Successful programs offer a return on our investment, so if the program is foundering, we shake hands and walk away.”

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‘Sham’ or public interest? ICER suggests 70%-plus discounts on Vertex’s cystic fibrosis drugs

By Angus Liu

Vertex has often talked about its admiration for Gilead, setting the big biotech’s ability to roll out multiple antivirals as a model for its cystic fibrosis endeavor. Now, though, it faces the same pricing issue once pinned on Gilead’s hepatitis C franchise. But the company refuses to play sitting duck.

In a new report, the U.S. cost-effectiveness watchdog the Institute for Clinical and Economic Review argues that Vertex’s cystic fibrosis trio—Kalydeco, Orkambi and newly approved Symdeko—need a huge price cut to achieve cost-effectiveness. Its suggested discount? Over 70%. Continue reading ‘Sham’ or public interest? ICER suggests 70%-plus discounts on Vertex’s cystic fibrosis drugs

Steps in the Journey: CFTR mutation to sweat chloride concentration to survival

Associations between “salty” sweat and early mortality can be found in the scientific literature dating back to the 17th century [1], hundreds of years before a comprehensive medical description of cystic fibrosis (CF) [2]. Insightful observation of excessive dehydration and deaths among children during a 1948 New York City heat wave suggested that salt homeostasis was a fundamental cellular problem in CF [3], with identification of supranormal sweat chloride concentrations remaining fundamental to the diagnosis of CF today. Since identification of the mutated gene associated with CF (the cystic fibrosis transmembrane conductance regulator; CFTR) [4], pieces of the CF puzzle seem to have, for the most part, fallen into place. Continue reading Steps in the Journey: CFTR mutation to sweat chloride concentration to survival

New Promising Results from Phase 3 of Combination Therapy

Findings from a phase 3 trial evaluating the efficacy and safety of tezacaftor in combination with ivacaftor in patients with cystic fibrosis (CF) who were homozygous for the Phe508del mutation were published in the New England Journal of Medicine.

The Phe508del mutation has been known to result in greatly reduced conductance regulator (CFTR) protein activity and a loss of chloride secretion, which can lead to impaction of mucus in the airways, gastrointestinal tract, and exocrine organs, with the potential for severe clinical consequences including gradual loss of lung function, nutritional deficits, pulmonary exacerbations, and respiratory failure. It is the most prevalent CFTR mutation worldwide, and affects approximately 46% of American CF patients.

Previous data has shown Ivacaftor’s association with a rate of progressive decline in lung function that is lower than that in untreated patients. In a phase 2 clinical trial involving patients who were homozygous for the Phe508del mutation or heterozygous for the Phe508del and G551D mutations, when combined with the investigational CFTR corrector tezacaftor, it has exhibited enhanced CFTR function and improved lung function.

In August, just one month removed from Vertex’s announcement of positive datafrom Phase 1 and Phase 2 studies, Rare Disease Report covered the acceptance of applications for the use of the tezacaftor/ivacaftor combination treatment in this patient population by the U.S. Food and Drug Administration (FDA) and European Medicines Agency (EMA).

The phase 3 trial enrolled a total of 510 patients 12 years and older with CF who were homozygous for the Phe508del CFTR mutation at 91 sites in the U.S., Canada, and Europe from January 30, 2015 to January 20, 2017. Patients were randomly assigned to be administered either tezacaftor and ivacaftor (administered as a fixed-dose combination tablet containing 100 mg of tezacaftor and 150 mg of ivacaftor in the morning and a tablet containing 150 mg of ivacaftor in the evening) combination therapy or placebo for 24 weeks.

In total, 475 patients completed the full 24 weeks of the trial, with 93.6% (n=235) in the tezacaftor-ivacaftor group and 93% (n=240) in the placebo group. While no significant difference in the body mass index (BMI) was experienced between the groups at week 24, the use of the combination therapy led to a significantly greater absolute change from baseline in the predicted forced expiratory volume in 1 second (FEV1) than placebo. Despite advances in standard-of-care therapy, patients with CF continue to lose lung function at a rate of an estimated 1% to 3% per year. This trial exhibited a significant effect of the combination therapy compared to the placebo, as the mean absolute change from baseline in FEV1 through week 24 was 3.4 percentage points in the former, compared to 0.6 in the latter.

The most common adverse events (AEs) among the enrolled patients included infective pulmonary exacerbation, cough, headache, nasopharyngitis, increased sputum production, pyrecia, hemoptysis, oropharyngeal pain, and fatigue. The incidence of AEs was similar in both the group for combination therapy and the placebo group, however, those treated with lumacaftor-ivacaftor in the phase 3 did not experience an increased incidence of respiratory events (33 patients [13.1%] vs. 41 patients [15.9%]).

This improved safety profile of the tezacaftor-ivacaftor combination supports its use in a broad range of patients with CF, and, if approved, the therapy will be the third of Vertex’s drugs approved for CF patients, and the second intended specifically to treat patients with F508del mutations (Orkami [lumacaftor/ivacaftor]).

For original article please visit: http://www.raredr.com/news/phase-3-combination-therapy-cystic-fibrosis?t=physicians

For the published study please visit: http://www.nejm.org/doi/full/10.1056/NEJMoa1709846?query=genetics#t=articleDiscussion

Newly Discovered CF Mutations Could Be Why Some People with CF are Living Longer

Researchers hypothesize that the newly-discovered mutations help re-hydrate the airways, discouraging bacterial build-up in the lungs.

Despite a narrow average lifespan, there is a big range in how severely cystic fibrosis (CF) affects the lungs and other organs depending on an individual’s specific genetic variation, and even in how long patients sharing the same, most common genetic mutation are able to survive with CF.

This led researchers at Boston Children’s Hospital to wonder if other genetic mutations could be protective against CF’s effects. Recent findings published in the American Journal of Respiratory Cell and Molecular Biology suggest that may be the case.

“There are some patients at one end of extreme severity who need a lung transplant very early in life, then others whose clinical presentation seems to stabilize so that they can live into the fifth and sixth decades of life,” says Pankaj Agrawal, MBBS, MMSc, principal investigator and medical director of The Manton Center’s Gene Discovery Core at Boston Children’s, who was the co-first author on the study.

To find out why, Agrawal and researchers at Boston Children’s — including Ruobing Wang, MD, a pulmonologist, and Craig Gerard, MD, PhD, chief of the Division of Respiratory Diseases — conducted the first-ever longitudinal analysis of genetic modifiers related to CF.

They combed through a population of nearly 600 CF patients registered at the Boston Children’s Cystic Fibrosis Center and found five individuals who stood out because of their advanced age — in their 50s or 60s — and relatively normal lung function.

“Given the large size of our center’s patient population, we were able to find a number of individuals at this rare ‘extreme,'” says Wang, who was co-first author on the paper.

A new hypothesis for mitigating cystic fibrosis

To discover the genetic variants, the researchers collected blood from these patients and performed whole exome sequencing on their DNA, analyzing the “coding” section of the genome that is responsible for most disease-related mutations.

Sequencing the genes of these five Boston Children’s patients — a cohort known as “long-term non-progressors” — the researchers found a set of rare and never-before-discovered genetic variants that might help explain their longevity and stable lung function.

The gene variants are related to so-called epithelial sodium channels (ENaCs), semi-permeable cellular pathways responsible for reabsorbing sodium in the kidney, colon, lung and sweat glands.

“Our hypothesis is that these ENaC mutations help to rehydrate the airways of CF patients, making it less likely for detrimental bacteria to take up residence in the lungs,” says Wang.

The discovery brings ENaCs into the limelight as a potential new therapeutic target.

“For example, if we could target ENaCs with a small molecule or an antibody-based drug, we might be able to incur a protective effect against CF’s progression,” says Agrawal, who is also a physician in the Boston Children’s Division of Newborn Medicine.

Based on their findings, the team is now doing further studies to analyze the genetics of patients at the other end of the CF spectrum — those with extremely severe clinical presentation of symptoms at a young age.

Story Source:

Boston Children’s Hospital. “Some people with cystic fibrosis might live longer because of genetic mutations: Researchers hypothesize that the newly-discovered mutations help re-hydrate the airways, discouraging bacterial build-up in the lungs.” ScienceDaily. ScienceDaily, 25 October 2017. <https://www.sciencedaily.com/releases/2017/10/171025150620.htm>.

Materials provided by Boston Children’s HospitalNote: Content may be edited for style and length.

Positive Results for Phase 3 Studies of the Tezacaftor/Ivacaftor Combination Treatment

Vertex Pharmaceuticals Incorporated (Nasdaq: VRTX) announced that the New England Journal of Medicine (NEJM) published two articles with results from two Phase 3 studies of the tezacaftor/ivacaftor combination treatment, a medicine in development that is designed to treat the underlying cause of cystic fibrosis (CF) in people ages 12 and older who have certain mutations in the cystic fibrosis transmembrane conductance regulator (CFTR) gene. Continue reading Positive Results for Phase 3 Studies of the Tezacaftor/Ivacaftor Combination Treatment

Phase 1b Trial of QR-010

https://globenewswire.com/news-release/2017/08/29/1101646/0/en/ProQR-Completes-Dosing-of-Cystic-Fibrosis-Patients-in-QR-010-Phase-1b-Trial.html

ProQR Completes Dosing of Cystic Fibrosis Patients in QR-010 Phase 1b Trial

Key Updates
• Last patient received their final dose in the PQ-010-001 Phase 1b clinical trial of QR-010 in CF patients with the F508del mutation.
Top-line trial data are expected to be issued in a press release Continue reading Phase 1b Trial of QR-010