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- University of Sunderland
- 3 - Allied Health Professions, Dentistry, Nursing and Pharmacy
- Submitting institution
- University of Sunderland
- Unit of assessment
- 3 - Allied Health Professions, Dentistry, Nursing and Pharmacy
- Summary impact type
- Health
- Is this case study continued from a case study submitted in 2014?
- No
1. Summary of the impact
Oral health treatment costs NHS England approximately £3.4 billion per year (of which 9.1% is urgent care) and yet 39% of the UK population does not attend a dentist. To improve oral health in this disengaged population, researchers at Sunderland developed an intervention that can be delivered by pharmacists. This intervention has significantly improved knowledge and practice in over 1,000 people; is one of the required criteria for all 109 Healthy Living Pharmacies in County Durham; and is incorporated into Health Education England North East’s CPD provision and Sunderland’s MPharm programme, with over 300 pharmacy staff and 300 trainee pharmacists already trained. The research has given approximately 529,000 people free and simple access to oral health guidance. The success of this project provides critical evidence of the benefits of interprofessional collaboration in healthcare.
2. Underpinning research
When oral health is a significant problem and over a third of the population does not attend a dentist, there is an opportunity to explore whether this can be addressed by delivering oral health interventions in places that they do attend. Andrew Sturrock and colleagues at the University of Sunderland conducted research that investigates role that pharmacists could play in addressing the lack of advice and resulting oral health problems.
Sturrock (in collaboration with the Durham County Council Public Health Team, County Durham and Darlington Local Pharmaceutical Committee, and County Durham and Darlington Foundation Trust) designed and trialled a pharmacy-based oral health intervention [R1]. Its main purpose was to establish whether community pharmacies could play a role in tackling the problem of oral health, an issue compounded by disengagement from dental services. This research found that pharmacists were able to reach patients with a poor history of accessing dental services and produce positive intentions to change oral hygiene behaviours in a large number of patients.
A team from Sunderland (in collaboration with the National University of Singapore) then utilised interpretive qualitative methods to interview a wide range of primary care health professionals (pharmacists, doctors, nurses, practice managers) and patients. This study provided evidence of a lack of integration between oral and general healthcare services and the isolation of dental teams from other professional groups, both of which potentially impact negatively on patient care. It also identified an opportunity to improve oral and general healthcare through the developing role of clinical pharmacists working in general practice [R2].
The same group adopted a grounded theory approach to interview pharmacists and doctors [R3] and dentists [R4]. This study explored the interprofessional prevention of medication-related osteonecrosis of the jaw (MRONJ), a rare yet significant adverse effect of some prescribed medications. This research identified that patient safety continues to be compromised due to limited awareness of the condition and preventive interventions and lack of integration between oral and general health services.
They then adopted a grounded theory approach to interview a wide range of patients, including those with a diagnosis of MRONJ [R5]. This study highlighted the significant detrimental impact that MRONJ can have on a patient’s quality of life, despite poor awareness of the condition amongst those who prescribed implicated medications. This provided evidence to support the recommendations in guidelines published by the Scottish Dental Clincal Effectiveness Programme for the prioritisation of preventive measures and closer interprofessional working. A key finding related to the barriers for patients accessing dental services, with the pharmacist providing significant opportunities for reinforcement of information and the provision of advice to patients on the adverse effects of newly prescribed medications.
This research has led to an NIHR ARC grant of £48,155 awarded to Sturrock to explore the role of community pharmacists in delivering opportunistic head and neck cancer screening for at-risk patients.
3. References to the research
R1 Sturrock A, Cussons H, Jones C, Woodcock C, Bird L. Oral health promotion in the community pharmacy: An evaluation of a pilot oral health promotion intervention. British Dental Journal 2017;223. doi:10.1038/sj.bdj.2017.784
R2 Sturrock, A, Preshaw, PM, Hayes, C and Wilkes, S (2020) ‘We do not seem to engage with dentists’: a qualitative study of primary healthcare staff and patients in the North East of England on the role of pharmacists in oral healthcare. BMJ Open, 10 (2). e032261.
R3 Sturrock A, Preshaw P, Hayes C, Wilkes S. Attitudes and perceptions of GPs and community pharmacists towards their role in the prevention of bisphosphonate-related osteonecrosis of the jaw: a qualitative study in the North East of England. BMJ Open 2017;7:e016047. doi:10.1136/bmjopen-2017-016047
R4 Sturrock A, Preshaw PM, Hayes C, Wilkes S. General dental practitioners’ perceptions of, and attitudes towards, improving patient safety through a multidisciplinary approach to the prevention of medication-related osteonecrosis of the jaw (MRONJ): a qualitative study in the North East of England. BMJ Open 2019;9:e029951. doi:10.1136/bmjopen-2019-029951.
R5 Sturrock A, Preshaw PM, Hayes C, Wilkes S. Perceptions and attitudes of patients towards medication-related osteonecrosis of the jaw (MRONJ): a qualitative study in England BMJ Open 2019;9:e024376. doi:10.1136/bmjopen-2018-024376.
Quality indicators
All journal articles were peer-reviewed. R1 was published in a Q2 journal and received a favourable review in the issue by the editor. R2-5 were published in a Q1 journal.
R5 was funded by the UK Clinical Pharmacy Association and Pharmacy Research UK. PI: Sturrock, Jan-Dec 2017, £20,000.
4. Details of the impact
This research underpinned the creation, piloting and evaluation of a pharmacy-based oral health intervention and an educational intervention to support the development of pharmacists’ roles in the interprofessional management and integration of oral and general health. The health intervention, piloted in late 2016, was offered to adults in receipt of free prescriptions, and consisted of a short demonstration of how teeth should be cleaned, after which patients received supporting information and advice from the Oral Health Foundation, details of local dental providers, and a bag containing a toothbrush, toothpaste and an information leaflet. Five Healthy Living Pharmacies (HLPs) in deprived County Durham communities took part in the pilot. Each pharmacy was asked to deliver the intervention to at least 200 patients; in total, 1,069 patients participated.
The focus of the impact is on the North East because poor oral health is particularly acute in the region; in Sunderland 28.4% of the population have at least one incidence of decay, tooth loss or filling, and in Middlesbrough this rises to 32.1% (national average: 23.3%) [S1]. It has since been extended into other areas.
Impact on patients
Evaluation of the pilot indicated a clear improvement in patient knowledge and intended behaviour, with 72% of the 1,069 patients who took part saying that their knowledge about oral health was now “much better”. One pharmacist reported that “ a lot of people […] actually didn’t know how to do their teeth,” and another said that “ people who thought because they had no teeth anymore, they didn’t have to go back to the dentist.” In addition, 66% said they would definitely change the way they look after their teeth. The majority (64%) of patients also agreed that the pharmacy is the right place to receive advice about their teeth [S2]. Crucially, the intervention reached patients who stand to benefit most; all patients were from deprived communities where at least one incidence of decay, tooth loss or filling (d3mft > 0) exceeds the national average. Given the relationship between poor oral health and long-term conditions such as cardiovascular disease and diabetes, the population of patients intending to change how they care for their teeth can be expected to show an associated improvement in general health.
Behind these statistics lies a more fundamental change: patients have had a positive experience with oral healthcare. The intervention, using short and spontaneous conversations about how to care for their teeth, reengaged patients in oral healthcare and improves patient trust in healthcare professionals – important for managing dental anxiety, a major barrier to using dental services. Promisingly, 73% of patients said they wanted details of local dental practices, information that was provided by the pharmacy team.
Impact on practice
Staff at the participating HLPs completed training to enable them to provide the recommended advice specified by Public Health England in the Delivering better oral health toolkit. Qualitative interviews with these staff showed that their knowledge had improved after receiving the training; for example, “ One of the things I didn’t realise until I came back was the amount of toothpastes on the market that don’t actually have any fluoride in” [S2]. Other staff have identified how the training augments their professional practice, saying that it helped them to consider how medications may be related to oral health problems, and that they would keep sugar-free medication in mind [S3].
The pilot’s success confirmed that the concept could be replicated more widely. Health Education England covering North East and North Cumbria (HEENE) now offer pharmacy team training in oral health as accredited CPD as continuing support following the pilot. Since 2018 346 pharmacy staff from North Tyneside, Newcastle, Northumberland, South of Tyne, Teesside, County Durham and Carlisle have completed it. HEENE’s Clinical Lead says “ Pharmacy curricula do not typically incorporate oral health training, and this in-service training addresses that gap” [S4]. In response, since 2018/19 the University of Sunderland has integrated this training into its MPharm programme. Through this route , approximately 300 training pharmacists have benefited from this enhanced capacity. Alongside face-to-face training, since 2019 HEENE has delivered oral health training as e-learning modules as well as face to face events to include specialists topic, for example oral cancer [S4]. The unit’s research thus contributes to the development of both the existing and future workforce.
Impact on health policy
The success of the pilot resulted in a change in health policy at Durham County Council. In 2018-19 oral health became a local target for all 109 HLPs in the county, meaning that pharmacies must actively support their patients’ oral health to maintain their HLP status [S5]. Patients do not need to attend the dentist for guidance about oral health, but can access it in a setting they already visit, at a time convenient to them, for free. Since there is one pharmacy for every 4,850 people in England, staff in these pharmacies can prompt as many as 529,000 patients to follow signposting to dental services and take action to prevent the occurrence or worsening of oral health problems, thus also protecting their general health. The British Dental Journal’s editor agrees, saying that the intervention “ highlights how interdisciplinary collaboration can be of great potential benefit to society in general and dental patients, actual and potential, in particular” [S6].
5. Sources to corroborate the impact
S1 Public Health England. 2018. Results of 5 year old oral health survey 2017. Electronic dataset. UK Government.
S2 Final Report: Oral health promotion in a community Pharmacy: An evaluation of a pilot oral health promotion intervention
S3 Training evaluation, Health Education England, Directorate of Multi-disciplinary Dental Education
S4 Statement of support from Clinical lead for multi-disciplinary oral health, Health Education England covering North East and North Cumbria
S5 Durham County Council Oral Health Strategy Update, October 2019
S6 Review of Oral health promotion in the community pharmacy: an evaluation of a pilot oral health promotion intervention, Stephen Hancocks, British Dental Journal 2017, 223
- Submitting institution
- University of Sunderland
- Unit of assessment
- 3 - Allied Health Professions, Dentistry, Nursing and Pharmacy
- Summary impact type
- Health
- Is this case study continued from a case study submitted in 2014?
- No
1. Summary of the impact
Graham’s research on the social aspects of bariatric surgery has improved the practice of over 550 surgeons, nurses, psychologists and nutritionists in the UK, Mexico and India. Clinicians better understand the social factors that influence life after surgery, the need for specialised contraceptive support and the role that pharmacists play after discharge. For the first time they systematically address these issues in pre- and post-operative care, leading to improved health and wellbeing of 111,000 patients around the world. The work empowers patients to overcome discrimination and challenges the stigma associated with bariatric surgery, giving voice to - and validating the experiences of - often alienated individuals.
2. Underpinning research
Obesity is an increasing global health issue, with nearly 30% of adults in the UK classed as obese. Obesity is a stigmatised health condition, which results in a poor quality of life for many people. An increasing number of adults with obesity seek bariatric surgery as a method of weight-loss and improvement of illnesses associated with obesity, e.g. Type 2 diabetes. Bariatric surgery is commonly perceived as both cosmetic and an easy way to lose weight, and portrayed as cheating, and/or that the surgery does the work and not the person. Currently only a small body of research explores the patient perspective of bariatric surgery.
This research, led by Graham, was undertaken in collaboration with Sunderland Royal Hospital, one of the highest volume centres in the UK. A series of qualitative studies examined the patient experience of the impact of bariatric surgery on their everyday lives. Individual face to face interviews were held with patients up to two years post-operatively, exploring self-reported issues in detail.
The findings show that many bariatric patients who have been stigmatised for their weight go on to be judged further for the method of their weight loss. The mechanisms of bariatric surgery induce rapid weight loss, which may significantly alter a person’s physical appearance, leaving them open to scrutiny over the changes from others. In order to avoid any confrontation and judgment, many people choose not to disclose the method of weight-loss and resort to lying or avoiding the discussion altogether. This has a significant impact on a person’s life and may hinder social encounters and situations.
The findings [R1] provided three conceptual risk adjustment categories that patients may fall into: Risk Accepters (accepting of the social risks and comfortable disclosing), Risk Challengers (who accept the social risks, but are not compliant with post-surgical advice) and Risk Contenders (who are wary/frightened of social risks and disclosure, and whose adjustment process following surgery is complex owing to ongoing social and clinical issues). Explicating these categories provides a framework for clinical discussions and for patients to have a non-clinical framework to reflect on.
Findings further showed areas where patient support was provided well [R3] and illuminated areas where it could be more fully utilised, such as the use of social media and technology [R2], along with exploring a potential role for community pharmacies to be involved in patient care, to bridge the gap between hospitals and community and provide long-term support once patients were discharged. [R2, R3, R5]
The highest proportion of people who seek bariatric surgery are females in their reproductive years, and issues such as contraception, fertility and sexual health are important, but are not widely discussed in surgical environments [R4, R6]. Further research, based on patient and clinician responses, identified gaps in knowledge and pathways to improve patient care.
The research highlights the need for clinicians working within bariatric surgical multidisciplinary teams to be aware of the impact of social changes following surgery and the need to embed these into patient support in clinical environments. The findings have informed further work into sources of support outside the bariatric surgical teams, with published research into the patient-reported impact on the role of the specialist bariatric pharmacist focussing on how community pharmacists might be utilised to provide additional support for patients in community-based settings [R6].
3. References to the research
R1 Graham, Yitka, Hayes, Catherine, Small, Peter, Mahawar, Kamal and Ling, Jonathan (2017) Patient experiences of adjusting to life in the first two years after bariatric surgery: a qualitative study. Clinical Obesity. ISSN 1758-8111 Quality indicator: Peer-reviewed journal article. 19 citations.
R2 Graham, Yitka, Hayes, Catherine, Mahawar, Kamal, Small, Peter, Attala, Anita, Seymour, Keith, Woodcock, Sean and Ling, Jonathan (2017) Ascertaining the place of social media and technology for bariatric patient support: what do allied health practitioners think? Obesity Surgery. ISSN 0960-8923 (Print) 1708-0428 (Online) Quality indicator: Peer-reviewed article in Q1 journal. 17 citations.
R3 Graham, Yitka, Callejas-diaz, Lindes, Parkin, Lindsay, Mahawar, Kamal, Small, Peter and Hayes, Catherine(2018) Exploring the patient-reported impact of the pharmacist on pre-bariatric surgical assessment. Obesity Surgery. pp. 1-12. ISSN 0960-8923 Quality indicator: Peer-reviewed article in Q1 journal.
R4 Graham, Yitka, Mansour, D., Small, P.K., Hinshaw, Kim, Gatiss, S., Mahawar, K.K., McGarry, Kenneth and Wilkes, Scott (2016) A survey of bariatric surgical and reproductive health professionals' knowledge and provision of contraception to reproductive-aged bariatric surgical patients. Obesity Surgery, 26 (8). pp. 1918-1923. ISSN 0960-8923 Quality indicator: Peer-reviewed article in Q1 journal. 18 citations.
R5 Mahawar, K, Hayes, C and Graham, Yitka (2019) Ascertaining areas for long-term follow-up of bariatric surgical patients for primary care. Bariatric Surgical Practice and Patient Care. ISSN 2168-023X Quality indicator: Peer-reviewed article.
R6 Graham, Y, Earl-Sinha, C, Parkin, L, Callejas-Diaz, L, Fox, A Tierney, C Mahawar, K and Hayes, C (2020) Evaluating a potential role for community pharmacists in post-bariatric patient nutritional support. Clinical Obesity. ISSN 1758-8111 Quality indicator: Peer-reviewed article.
Funding
Metagenics. March-Sept 2018. £12,400. PI: Graham
4. Details of the impact
Context
Bariatric surgery is a widely used intervention; over 1.8m surgeries were performed between 2008-16 worldwide, and annual numbers show a steep upward trend. Bariatric surgical research and practice typically focus on clinical outcomes such as weight loss and disease improvement, overlooking the impact of non-clinical factors on patients’ lives after surgery. As one bariatric surgeon says, “ *We as physicians and surgeons are very focussed on the medical changes to our patients after bariatric surgery **[… ] and seldom stop to analyse and reflect on the impact of the social aspects” [S1]. There is an implicit assumption that as weight is lost, patients feel better and everything in their lives falls into place [S2]. Graham’s work for the first time brought patients’ perspectives and the effects of surgery on their everyday lives firmly into multi-disciplinary bariatric care.
Impact
Graham’s research was undertaken in collaboration with clinicians and has been disseminated globally through articles in journals and professional publications, academic and practitioner conferences and patient events. Its impact extends from improved professional understanding to improved patient health and wellbeing after bariatric surgery (see diagram for overview). The eight clinicians who provide testimonials for this case study estimate that, since 2016, 555 bariatric surgeons, nurses, pharmacists, psychologists and nutritionists in the UK, Mexico and India have changed how they work as a result of Graham’s work [see breakdown in Section 5]. This includes clinicians based in Sunderland, which has one of the busiest bariatric units in the UK, and Tijuana, where 12,000 surgeries are carried out on patients from Mexico, the USA and Canada per year. They estimate that 2,550 of their patients have benefited from this research [see breakdown in Section 5]. Extrapolating from a median of 200 patients per clinician, approximately 111,000 patients around the world have benefitted. Graham is embedded in the bariatric surgical communities in the UK, India and Latin America, and these impacts result from purposeful engagement with patients and clinicians before, during and after the research.
Professional knowledge has been enhanced
Bariatric surgical clinicians have a new understanding of the social aspects of bariatric surgery and their huge importance to patients. Practitioners across the care pathway report increased awareness [S3, S1, S2, S4, S5, S6, S7]. One bariatric surgeon in England describes the research’s “phenomenal impact on our understanding of the importance of taking the non-clinical aspects of bariatric surgery into our professional practice” **[S4]. A bariatric nurse in England recognises that she didn’t realise how social factors affect patients, and that she “was unaware of how important to the patients this was.” As a result of Graham’s research, she says “I better understand what patients think about in everyday life, and that even the smallest things which most people take for granted […] are much more complex and fraught with risk than I thought” [S2]. Clinicians report improvements in their own practice from this knowledge, being able to “prepare patients for the changes that surgery brings, thereby increasing their quality of life, and giving them knowledge and confidence to deal with situations new to them”. Graham’s research also identified the need for pharmacists on multidisciplinary teams. As one patient advocate explains, Graham’s research clearly illustrates that *“the information and support provided by a pharmacist, given the changes to medication and lifelong vitamin supplementation, is crucial” [S5]**.
Practice has improved
Bariatric surgical clinicians around the world have used Graham’s research to transform their pre- and post-surgical practice [S3, S1, S2, S4, S5, S6, S7]. A surgeon in Mexico says “Graham’s work has challenged and indeed changed the way that surgeons think, and has been done in a way that has motivated surgeons like myself to apply her work in our practice and patient care” [S1]. For the first time, they have revised protocols for discussions with patients to include the social aspects of bariatric surgery in pre- and post-operative consultations. Consultations now cover topics such as how eating in the home and restaurants will be affected and whether they will tell others that they’ve had bariatric surgery, and prepare them to receive and manage negative judgments from others against this method of weight loss. He estimates that 1,000 of his patients, living in Mexico, the USA and Canada, have benefited from this change. A surgeon in India says the research has “ profoundly influenced the types of conversations I have with my patients”, confirming that they now discuss non-clinical aspects of surgery “ *not as a social conversation, but as part of the pre- and post-surgical consultations and follow up.*” [S7]. Another new inclusion in discussions is contraception [S2, S8, S4, S6]. A UK surgeon describes the change: “we now provide patients with information on contraception and suitable methods before and after surgery. We have also changed practice so that this is discussed in more detail, and patients are signposted to appropriate contraceptive services as appropriate” [S4]. This enhanced awareness has driven expansion of multidisciplinary teams. In 2015 City Hospitals Sunderland, home to one of the UK’s busiest bariatric units with between 400 and 600 surgeries per year, added a pharmacy role into the team, delivering pre-operative assessment, peri-operative monitoring, and support for community nurses and GPs. It has since created a second post to manage demand for pharmacist input [S4].
Patient care has improved
Clinicians attest that these changes improve patient care; as one surgeon said, “Graham’s research has positively influenced the UK bariatric surgical community’s approach to patients and many clinical counters are more patient-focused” [S9]. This shift towards patient-centred care has been acknowledged by other clinicians beyond the UK [S3, S7]. Graham’s risk adjustment categories are used to tailor consultations to patients’ needs. A Bariatric Surgeon in Mexico says “This helps us to understand how they may deal with the changes after surgery, and has led to more open and honest discussions with patients, which has resulted in improved care… [which has]… improved the lives of patients and helped them adjust to life after surgery” [S3]. Some clinicians have established support groups for patients in response to the research findings [S2].
Patients’ health and wellbeing has improved
Patients report improvements in physical and mental health and wellbeing as a result of these improvements. One says that clinicians’ greater appreciation for patients’ needs has given her “the right support to change, accept and understand what works to sustain a healthier and happier life” [S10], and another says that the research *“has educated me regarding bariatric surgery, which in turn has impacted my wellbeing, physical and mental health.*” Better pre-operative care means that patients “feel more confident about being open about the surgery” and empowered to be *“honest and **[*tell ] people from day one.” [S10] Improved post-operative care, and access to support groups have reduced patient isolation and increased their understanding and appreciation of themselves as individuals. One patient says that the research “made me realise I’m not alone, definitely eating better again and having more confidence as well.” [S10]
Patients’ voices are heard, and their needs and experiences recognised
Conducting qualitative research with patients means that patients’ voices about the social aspects of bariatric surgery are now being heard, with positive effects on their wellbeing. Patients say that it makes them “feel valued and listened to”; others highlight the importance of this representation, saying “It’s important to have someone to be a voice for those who have had or are considering bariatric surgery,” because “bariatric patients often feel alienated and uninvolved” [S10]. Clinicians agree that these issues are “often underestimated aspects of bariatric surgery” [S1]. By foregrounding patients’ views, Graham’s work “‘legitimised’ many issues that patients experience, and find difficult to speak about” [S11]. A patient advocate says that many people “assume that weight loss is the main outcome of surgery. Talk to any patient and you will see that quality of life issues and matters that go beyond weight are important to us. [This] research incorporates the patient voice […] so clinicians and others gain a more comprehensive understanding of bariatric surgery from the patient perspective” [S5]. The result is a change in the dynamics of doctor-patient relationships. Patients are empowered to be open about their experiences; as one surgeon says, “patients are more open in their conversations with me, which helps me to support them not only medically, but in a more holistic, patient-centred approach” [S4].
Stigmas are being confronted
Graham’s research challenges stigmas around surgery as a weight loss method, and has supported patients in overcoming discrimination. One patient says, “society sees surgery as the ‘easy’ option for obese people,” and that this research has built the foundations for changing narratives around bariatric surgery to recognise that “the operation is only a ‘tool’, the operation is predominantly for most patients the ‘easy’ bit.” Another says “the research is important as it is helping both bariatric patients and the general public understand why the surgery is so important and it's usually last resort for most patients.” This has tangible benefits; as one patient says, the research “has helped me and many others who have had surgery overcome the social discrimination we can feel” [S10].
5. Sources to corroborate the impact
### Source | ### Patients benefitting | ### No. other clinicians known to have changed practice |
---|---|---|
S1 Written testimonial: Endocrine and Bariatric Surgeon, Mexico | 200 | - |
S2 Written testimonial: Specialist Bariatric Nurse, England | 500 | 15 |
S3 Written testimonial: Bariatric Surgeon, Mexico | 1000 | 13 |
S4 Written testimonial: Consultant Surgeon, England | 200 | 300 |
S5 Written testimonial: Nurse and Patient Advocate, England | ||
S6 Written testimonial: Consultant Chemical Pathologist, England | 100 | 4 |
S7 Written testimonial: Bariatric Surgeon, India | 200 | 200 |
S8 Written testimonial: Bariatric Surgeon, Mexico | 150 | 23 |
S9 Written testimonial: Consultant Bariatric Surgeon and Secretary of the British Obesity and Metabolic Surgery Society, England. | 200 | - |
S10 Survey of bariatric surgery patients in the UK | ||
S11 Written testimonial: Executive Director, European Coalition for People Living with Obesity (ECPO) |
- Submitting institution
- University of Sunderland
- Unit of assessment
- 3 - Allied Health Professions, Dentistry, Nursing and Pharmacy
- Summary impact type
- Technological
- Is this case study continued from a case study submitted in 2014?
- No
1. Summary of the impact
Research led by Dodou has changed how a global pharmaceutical company develops spray-dried drug-polymer solid dispersions (SDSDs). The research set out to improve the screening processes used to develop formulations of new chemical entities, resulting in a cost- and material-efficient screening protocol used for screening SDSDs. This protocol improves on existing approaches by integrating processing properties which are traditionally tested after screening, thereby providing a more accurate and efficient pathway from screening to manufacturing phases. This new protocol has now been adopted commercially by UCB Pharma for the screening of all SDSDs and has enabled the company to bring screening work in-house, saving at least EUR 100,000 since 2018.
2. Underpinning research
Drug crystallisation in dosage forms is a formulation defect because it hinders drug release. Drug-in-adhesive films contain the drug in the adhesive thin layer that attaches the patch on the skin surface. Crystallisation of drugs in the adhesive layer is usually detected during QC stability testing before the patches are released to the market. However this is a challenging issue for the transdermal industry, which has led to the recall of some commercial patches such as Neupro. Since 2005 Dodou has conducted research to address this matter, focussing on the crystallisation of drugs in drug-in-adhesive transdermal films.
The stabilisation approach Dodou investigated was via the formation of amorphous drug-polymer solid dispersions (ASDs). The first milestone of the research on this topic was the discovery that the manufacturing method of drug-polymer solid dispersions can affect both the crystallisation tendency of the drug in the adhesive layer and the solubility of the drug in the adhesive [R1]. In this work Ibuprofen was used as a model drug and poloxamer 188 as the polymeric carrier in different drug/polymer ratios. It showed that solid dispersions formulated via melting of the drug/polymer mixture in the adhesive layer provide crystal-free films of high drug loading capacity, and that the ratio adjacent to the eutectic composition exhibits the highest thermodynamic activity.
The research formed the basis of her first collaboration with UCB Pharma, a multinational biopharmaceutical giant headquartered in Belgium. Dodou was PI on this collaboration, working with scientists in the company’s drug delivery design and development team. The collaboration achieved a second milestone; the development of novel thermodynamic predictive models that enable the estimation of the required polymer amount to stabilise, over long-term storage conditions, a given drug concentration in the adhesive layer of transdermal patches [R2]. This work was fully funded by UCB Pharma.
The findings highlighted the use of theoretical thermodynamic models in the prediction of the long-term stability of drug/polymer amorphous solid dispersions and led to Dodou’s second collaboration with UCB Pharma on the systematic investigation of the theoretical prediction of drug-polymer miscibility and how the determination of drug-polymer miscibility at small manufacturing scale could correlate with the large-scale manufacture of solid dispersions. This work was fully funded by UCB Pharma.
Having thus established that the theoretical thermodynamic models cannot accurately predict drug/polymer miscibility [R3], they addressed the issue by developing a novel effective miniaturised screening device for the prediction of drug-polymer miscibility at an industrial pre-formulation stage [R4], and a novel small-scale spray-drying approach for the miscibility of drug/polymer solid dispersions at early drug development [R5].
These findings culminated in the derivation of a novel industrial protocol [R6] which is the focus of this impact case study. The protocol improves on existing approaches by integrating processing properties which are traditionally tested after screening. In this way, the protocol is a more accurate and direct pathway from screening to manufacturing phases.
3. References to the research
Dodou, Kalliopi and Saddique, Waqaas (2012) Effect of manufacturing method on the in-vitro drug release and adhesive performance of drug-in-adhesive films containing binary mixtures of ibuprofen with poloxamer 188. Pharmaceutical Development and Technology, 17 (5). pp. 552-561. ISSN 1083-7450
Chenevas-Paule, Clemence, Wolff, Hans, Ashton, Mark, Schubert, Martin and Dodou, Kalliopi (2017) "Development of a predictive model for the long term stability assessment of drug-in-adhesive transdermal films using polar pressure sensitive adhesives as carrier/matrix.". Journal of Pharmaceutical Sciences, 106 (5). pp. 1293-1301. ISSN 0022-3549
Ousset, Aymeric, Chavez, Pierre-François, Meeus, Joke, Robin, Florent, Schubert, Martin Alexander, Somville, Pascal and Dodou, Kalliopi (2018a) Prediction of Phase Behavior of Spray-Dried Amorphous Solid Dispersions: Assessment of Thermodynamic Models, Standard Screening Methods and a Novel Atomization Screening Device with Regard to Prediction Accuracy. Pharmaceutics, 10 (1). pp. 29-54. ISSN 1999-4923
Ousset, Aymeric, Meeus, Joke, Robin, Florent, Schubert, Martin, Somville, Pascal and Dodou, Kalliopi (2018b) Comparison of a Novel Miniaturized Screening Device with Büchi B290 Mini Spray-Dryer for the Development of Spray-Dried Solid Dispersions (SDSDs). Processes, 6 (8). p. 129. ISSN 2227-9717
Ousset, Aymeric, Bassand, Celine, Chavez, Pierre-Francois, Meeus, Joke, Robin, Florent, Schubert, Martin Alexander, Somville, Pascal and Dodou, Kalliopi (2018c) Development of a small-scale spray-drying approach for amorphous solid dispersions (ASDs) screening in early drug development. Pharmaceutical Development and Technology.
Ousset, Aymeric, Chirico, Rosanna, Robin, Florent, Schubert, Martin, Somville, Pascal and Dodou, Kalliopi (2018d) A Novel Protocol Using Small-Scale Spray-Drying for the Efficient Screening of Solid Dispersions in Early Drug Development and Formulation, as a Straight Pathway from Screening to Manufacturing Stages. Pharmaceuticals, 11 (3). p. 81. ISSN 1424-8247
Evidence of quality of research
The research externally funded:
Transdermal patches. UCB Pharma. PI: Dodou. 2013-16. £40,113
Drug polymer solid dispersions. UCB Pharma. PI: Dodou. 2014-19. £91,793.
Journal rankings:
R1, R2 and R6 are published in Q1-ranked Pharmaceutical Science journals .
R3, R4 and R5 are published in Q2-ranked Pharmaceutical Science/Process Chemistry and Technology journals.
R6 provides a conclusive solution to a problem faced by all pharmaceutical developers producing SDSDs. The body of research is highly relevant and of significance to any pharmaceutical developer producing SDSDs and has proven application in pharmaceutical development.
4. Details of the impact
Since 2005 Dodou has worked in partnership with the drug delivery design and development group at UCB Pharma. Spray dried solid dispersion (SDSD) products are a key part of the UCB new chemical entities pipeline for both non-clinical and clinical development. The significance of this pipeline prompted UCB to appoint an expert partner to provide new insights into manufacturing methodologies and quality control tools for the development of poorly water-soluble drugs, with the aim of developing a more accurate protocol for quality control that would be used to optimise drug stability and speed up the drug development process.
Dodou’s research demonstrated that standard screening tools used in development of spray-dried solid dispersions (SDSDs) do not fully account for the effect of the preparation method on the properties of screened ASDs [R6]. This inaccuracy meant that additional experimentation is needed, resulting in a more time-consuming and wasteful process with additional costs. Dodou’s protocol is more accurate because it incorporates the processing method throughout development of the active pharmaceutical ingredient (API), therefore removing the need for additional experimentation, creating a faster, less wasteful (and therefore cheaper) screening process. UCB implemented the new protocol in August 2018 for the screening of all SDSDs in their pipeline in both clinical and non-clinical development.
By removing the need for further post-screening experimentation, the protocol has reduced API consumption from 10g to 735mg, and screening/formulation time from 16 weeks to 9 days [R6]. Prior to this research UCB outsourced their solid dispersion screening at a cost of approximately EUR 10,000 – 15,000 per molecule; each year approximately 5 molecules are selected as potential solid dispersion candidates. This screening tool has removed the need for outsourcing this activity, thus saving between EUR 50-75,000 per year, or EUR 100-150,000 during the assessment period. The change has also enhanced the organisation’s capacity for development of new molecules: “ Adoption of this new time- and material-efficient protocol has made an impact on UCB Pharma’s capacity to speed up the lead discovery and lead optimization phases up to the clinical development of pipelines’ molecules” [S1].