Correspondence 10 11 Ding Y, He L, Zhang Q, et al. Organ distribution of severe acute respiratory syndrome (SARS) associated coronavirus (SARS-CoV) in SARS patients: implications for pathogenesis and virus transmission pathways. J Pathol 2004; 203: 622–30. Wei C, Wan L, Yan Q, et al. HDL-scavenger receptor B type 1 facilitates SARS-CoV-2 entry. Nat Metab 2020; 2: 1391–400. Access to insulin and diabetes care in the Philippines Published Online November 23, 2021 https://doi.org/10.1016/ S2213-8587(21)00309-0 16 Millions of people from low-income and middle-income countries (LMICs) are unable to access insulin and routine diabetes care.1 The Philippines, a lowermiddle income country in southeast Asia with almost 4 million adults with diabetes,2 is no stranger to this crisis. Diabetes ranks fourth among the leading causes of death in the Philippines.3 Filipino people face substantial barriers to health care, which preclude access to insulin and diabetes care, including inadequate health financ­ing leading to high out-of-pocket expendi­ ture and a fragmented referral system from primary care to specialised care units. During the COVID-19 pandemic, access to diabetes medications became an even greater problem for Filipino people because of financial constraints from the economic recession and substantial supply deficits. Addressing these barriers is instrumental to solving the problem of insulin and diabetes care access in the country. In 2009, the Philippine Department of Health launched the Insulin Medicine Access Program (InMAP), a public–private partnership to provide affordable insulin. 4 Under InMAP, pharmaceutical companies provide insulin products through consignment with 22 hospitals across the country. However, most of these hospitals are in cities, presenting a challenge for patients living in geographically isolated and disadvantaged areas. Expanding InMAP is crucial to increase accessibility and reduce the out-ofpocket costs of insulin. The Universal Health Care Act of the Philippines, passed in 2019, created the Health Technology Assessment Council (HTAC), an advisory body mandated to recommend medicines and tech­ nologies for government funding.5 Currently, a single insulin analogue pen is worth 3 days of minimum wage pay. To bring down these costs and leverage government negotiations, HTAC is working to include insulin analogues in the Philippine formulary. As this approach gains momentum, strengthening primary care units and referral systems is imperative to create a robust infrastructure for diabetes care delivery. We agree with the sentiment expressed in the recent Editorial1 in The Lancet Diabetes & Endocrinology that global collaborative action is needed to tackle the diabetes epidemic. We also support multi­ sectoral discussions among local ministries of health, policy makers, health-care workers, patient advo­ cates, community leaders, and pharmaceutical companies to make insulin more accessible and affordable. Furthermore, we encourage LMICs to come together and share best practice in diabetes care and prevention given limited resources. Not least, we look forward to the fulfillment of the WHO Global Diabetes Compact,6 which aims to increase treatment access, improve patient outcomes, and promote prevention of diabetes. The Compact’s vision can be realised, but only through meaningful engagement, united action, and lifelong commitment among stakeholders around the world. CAJ has received honoraria for serving on the speaker’s bureau for Novo Nordisk, Sanofi Aventis, Merck, Merck, Sharpe and Dohme, Servier Philippines, and Johnson and Johnson. CAJ has also received support for attending meetings and travel for conventions from Sanofi Aventis, Merck, Sharpe and Dohme, Natrapharm, Novo Nordisk and AstraZeneca. All other authors declare no competing interests. Michelle Ann B Eala, John Jefferson V Besa, Regiel Christian Q Mag-usara, Anna Elvira S Arcellana, *Cecilia A Jimeno cajimeno@up.edu.ph College of Medicine, University of the Philippines, Manila, Philippines (MABE); Department of Medicine, Philippine General Hospital, Manila, Philippines (JJVB, RCQM); Division of Endocrinology, Diabetes and Metabolism, Department of Medicine, Philippine General Hospital, Manila, Philippines (AESA, CAJ); Department of Pharmacology and Toxicology, College of Medicine, University of the Philippines, Manila 1000, Philippines (CAJ) 1 2 3 4 5 6 The Lancet Diabetes & Endocrinology. Insulin for all: a hope yet to be realised. Lancet Diabetes Endocrinol 2021; 9: 639. International Diabetes Federation. IDF Western Pacific Members: The Philippines. May 14, 2020. https://idf.org/our-network/ regions-members/western-pacific/ members/116-the-philippines.html (accessed Oct 10, 2021). Philippine Statistics Authority. Causes of deaths in the Philippines (preliminary): January to December 2020. March 16, 2021. https://psa.gov.ph/content/causes-deathsphilippines-preliminary-januarydecember-2020 (accessed Nov 11, 2021). Department of Health, Republic of the Philippines. Insulin access program. https://doh.gov.ph/faqs/Insulin-AccessProgram (accessed Oct 10, 2021). Department of Health, Republic of the Philippines. Implementing rules and regulations of the Universal Health Care Act (Republic Act No. 11223). 2019. https://doh. gov.ph/sites/default/files/health_magazine/ UHC-IRR-signed.pdf (accessed Oct 15, 2021). Hunt D, Hemmingsen B, Matzke A, et al. The WHO Global Diabetes Compact: a new initiative to support people living with diabetes. Lancet Diabetes Endocrinol 2021; 9: 325–27. Diabetes and the WHO Model List of Essential Medicines The WHO Model List of Essential Medicines was first published in 1977 and includes minimum medicine needs for a basic health-care system, listing the most efficacious, safe, and cost-effective medicines for priority conditions.1 The goal of this list was to choose the medications that would be crucial to include in a population’s formulary, which otherwise would be inaccessible, especially in low-income and middle-income countries.2 The Model List of Essential Medicines has evolved over the decades and now takes into consideration other www.thelancet.com/diabetes-endocrinology Vol 10 January 2022 Correspondence important variables, such as public health relevance, efficacy, safety, and value.2 The list is updated every 2 years, and in 2019, the EMA included soluble and isophane (ie, regular and neutral protamine Hagedorn) insulin, gliclazide, and metformin for people with diabetes. The 2021 Model List of Essential Medicines will be remembered as a major change in what is considered to be required for the pandemic in diabetes, as both long-acting insulin analogues and SGLT2 inhibitors were added.1 For the 2021 Model List of Essential Medicines, human insulins (and qualityassured biosimilars) are included, as are long-acting insulin analogues (and their biosimilars). The specific analogues are listed by name: insulin degludec, insulin detemir, and insulin glargine. 1 Long-acting analogues improve overall quality of life because they conveniently can be dosed once daily and result in less hypoglycaemia than does neutral protamine Hagedorn insulin.3 The hope is that these newer insulins, particularly their biosimilars, will result in more penetration in lowincome and middle-income countries and more competitive pricing than do the insulins included on previous versions of the list. Notably, the rapidacting analogues were not included in the latest Model List of Essential Medicines. The SGLT2 inhibitors listed by name in the latest Model List of Essential Medicines are empagliflozin, canagliflozin, and dapagliflozin. 1 These medications have become widely favourable for use in the management of type 2 diabetes because of their benefits for patients with cardiovascular disease or chronic kidney disease. The most substantial benefits have been seen with a reduction in hospital admissions for heart failure and a deceleration of kidney disease progression.4 We agree that these definitive and major benefits outweigh concerns for possible minor and severe adverse effects: genitourinary infections in geographical areas that might not have access to treatment and rare, but life-threatening, euglycaemic diabetic ketoacidosis, which can be missed even in advanced health-care settings.5 With these changes to the 2021 Model List of Essential Medicines, WHO has taken a major step towards improving the lives of people with diabetes across the world. Notably, long-acting insulin analogues have become standard of care in low-income and middle-income countries, yet the SGLT2 inhibitors are underused. Hopefully, the addition of this class to the Model List of Essential Medicines will promote appropriate use in low-income and middle-income countries. With improvement in competitive pricing for long-acting insulin analogues and SGLT2 inhibitors, these medications are likely to be used more frequently and effectively than they currently are. Ideally, the beneficial outcomes of these two additions with less major hypoglycemic, cardiovascular, and renal events will be shown worldwide as the use of these medications increases. FNK declares no competing interests. IBH receives research funding from Medtronic Diabetes, Insulet, and Beta Bionics. IBH receives consulting fees from Abbott Diabetes Care, Roche, Bigfoot, and GWave. Farah N Khan, *Irl B Hirsch ihirsch@uw.edu University of Washington Medicine Diabetes Institute, University of Washington, Seattle, WA 98109, USA (FNK, IBH) 1 2 3 4 WHO. WHO Model List of Essential Medicines— 22nd list, 2021. Sept 30, 2021. https://www. who.int/publications/i/item/WHO-MHP-HPSEML-2021.02 (accessed Nov 7, 2021). Laing R, Waning B, Gray A, Ford N, ‘t Hoen E. 25 years of the WHO essential medicines lists: progress and challenges. Lancet 2003; 361: 1723–29. Hirsch IB, Juneja R, Beals JM, Antalis CJ, Wright EE. The evolution of insulin and how it informs therapy and treatment choices. Endocr Rev 2020; 41: 733–55. Zelniker TA, Wiviott SD, Raz I, et al. Comparison of the effects of glucagon-like peptide receptor agonists and sodium-glucose cotransporter 2 inhibitors for prevention of major adverse cardiovascular and renal outcomes in type 2 diabetes mellitus. Circulation 2019; 139: 2022–31. www.thelancet.com/diabetes-endocrinology Vol 10 January 2022 5 Tahrani AA, Barnett AH, Bailey CJ. SGLT inhibitors in management of diabetes. Lancet Diabetes Endocrinol 2013; 1: 140–51. The WHO Model List of Essential Medicines provides a core list of medicines that are safe, cost-effective, and necessary to address major public health concerns. 1 Including longacting insulin analogues on the WHO Model List of Essential Medicines emphasises global inequities in insulin but does not profoundly change that the availability and affordability of all insulins is poor.2,3 Median government procurement prices for long-acting insulin analogues are 6·6 times higher than for human insulin (ie, US$33 vs $6).3 When people need to pay for insulin out of pocket, the median price in the public sector is $29 for insulin analogues versus $9 for human insulin. However, the cost of production for human and insulin analogues is similar.4 Given that manufacturers sell analogues at a premium, will human insulin disappear from the market as was seen with animal insulin?2 For countries providing insulin for free, the price of insulin can already stretch tight budgets.2 Unless prices of analogues fall, they could seriously affect universal health coverage, because either insulin will be too costly to be included or resources will be reallocated to cover these additional costs. Further, the expense of insulin can strain funds that should cover associated devices, such as syringes and supplies for monitoring blood glucose.3 When changing insulins, training and education for health professionals and people with diabetes is essential given the differences in duration, method of administration, and dosage. Switching insulin delivery from syringes to pens should also be considered, particularly as each manufacturer has specific single-use pen devices or cartridges for reusable pens that often have differences in their operation. 17