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Society for the Study of Celiac Disease position statement on gaps and opportunities in coeliac disease



Progress has been made in understanding coeliac disease, a relatively frequent and underappreciated immune-mediated condition that occurs in genetically predisposed individuals. However, several gaps remain in knowledge related to diagnosis and management. The gluten-free diet, currently the only available management, is not curative or universally effective (some adherent patients have ongoing duodenal injury). Unprecedented numbers of emerging therapies, including some with novel tolerogenic mechanisms, are currently being investigated in clinical trials. In March 2020, the Celiac Disease Foundation and the Society for the Study of Celiac Disease convened a consensus workshop to identify high-yield areas of research that should be prioritized. Workshop participants included leading experts in clinical practice, academia, government and pharmaceutical development, as well as representatives from patient support groups in North America. This Roadmap summarizes key advances in the field of coeliac disease and provides information on important discussions from the consensus approach to address gaps and opportunities related to the pathogenesis, diagnosis and management of coeliac disease. The morbidity of coeliac disease is often underestimated, which has led to an unmet need to improve the management of these patients. Expanded research funding is needed as coeliac disease is a potentially curable disease.

Key points

  • Coeliac disease is a common and serious medical condition that is under-recognized among the health-care provider community, government and the public.

  • This Roadmap summarizes consensus recommendations to address gaps and opportunities in pathogenesis, diagnosis and management of coeliac disease.

  • Various animal models are available to translate hypotheses generated from human studies, and progress is being made in the development of physiological coeliac epithelial models based on organoid technology.

  • Coeliac-specific serology is highly reliable for the diagnosis of coeliac disease; however, there is disagreement between experts as to the necessity of intestinal biopsy to confirm the diagnosis.

  • There is increasing need for development of programmes for proper clinical management of coeliac disease, and the number of potential therapeutic targets and clinical trials has grown exponentially over the past 15 years.

  • Increased funding for coeliac disease research is crucial to improve clinical management and facilitate development of therapies for this condition.


Coeliac disease, an immune-mediated enteropathy triggered by gluten, is a relatively common condition affecting ~1% of the world population that can develop across the lifespan1,2. The incidence has been increasing rapidly over the past four decades worldwide3. A diagnosis of coeliac disease is associated with increased overall mortality4. Currently, the primary management for coeliac disease is a strict gluten-free diet, which is practically challenging and socially difficult to follow5. Thus, patients often have inadequate symptom control on a gluten-free diet, yet the few alternative therapies available are repurposed medications, such as budesonide, that are not disease specific.

To establish priorities for the support of relevant and high-yield areas of research, the Celiac Disease Foundation (CDF) and the Society for the Study of Celiac Disease (SSCD) convened the first SSCD consensus workshop on ‘Research Opportunities in Celiac Disease’ in March 2020 (ref.6). The consensus workshop was attended by leaders from academia and pharmaceutical companies, patient support group members and scientists from government institutions (NIH) that support research in coeliac disease. The consensus workshop was organized under the umbrella of SSCD and CDF. Workshop participants were identified and invited based on their area of expertise. A workshop outline was determined a priori, and each expert was asked to address specific topics. A round-table discussion followed each presentation. After the workshop, participants ranked the initiatives in a formal voting process (25 participants submitted votes for each topic), to determine prioritization. The complete list of attendants of the workshop in addition to the authors is detailed in the Acknowledgments. The authors of this article were selected by the SSCD to report on the discussion and recommendations arising from the workshop.

This Roadmap summarizes the latest advances and controversies in the field (Table 1) and provides information on selected milestones and consensus recommendations to address gaps and opportunities in pathogenesis and genetics (Table 2), and diagnosis, management and prevention of coeliac disease (Table 3). Recognized gaps in epidemiology are related to the unknown reason for the increasing incidence of coeliac disease and the prevalence of coeliac disease outside North America and Europe. Major questions have emerged about who to screen for coeliac disease, when and how to confirm the diagnosis. In terms of pathogenesis, although research has yielded various animal models of coeliac disease, there remain substantial gaps in understanding how gluten tolerance is lost and tissue destruction ensues. Gaps in disease management are also identified, as research has shown that patients are not able to maintain a strict gluten-free diet owing to the ubiquitous presence of gluten in the food supply. There is also a concern regarding persistent low diagnostic rates and poor understanding of the complications related to coeliac disease within the medical community and broader population that can be addressed through further education and development of stronger partnerships between patients, clinicians and academic researchers.

Table 1 Selected milestones and gaps in coeliac disease
Table 2 Selected milestones and current and future research objectives in pathogenesis and genetics
Table 3 Selected milestones and current and future research objectives in diagnosis, management, therapeutics and prevention of coeliac disease

Milestones and gaps in pathogenesis

Coeliac disease is triggered by the ingestion of gluten in a subgroup of genetically predisposed individuals2. Specifically, coeliac disease confirmed by recall response to gluten challenge is currently limited to individuals positive for HLA-DQ2, HLA-DQ8 or, rarely, HLA-DQ7 (ref.7). Gluten-specific CD4+ T cells in coeliac disease are activated by particular peptide fragments derived from gluten proteins and related prolamins present in wheat, barley and rye when they are bound to HLA-DQ2 or HLA-DQ8 (currently no HLA-DQ7 gluten epitopes are defined)8. Deamidation of wild-type gluten in the lamina propria by tissue transglutaminase 2 (TG2) increases binding efficiency to HLA-DQ2 (ref.9) and HLA-DQ8 (ref.10), which preferentially accommodate peptides with negatively charged residues at anchor sites. HLA-DQ–gluten peptide complexes activate CD4+ T cells, leading to the release of pro-inflammatory cytokines and chemokines that favour inflammatory cell infiltration and CD8+ T cell cytotoxic activity that contributes to mucosal damage in coeliac disease11. Patients with coeliac disease can develop typical upper gastrointestinal symptoms, such as nausea and abdominal pain and systemic markers of immune activation within hours of oral or intradermal gluten exposure11. It is clear that both gluten and permissive HLA-DQ genotypes are required for disease development; however, other genetic12 and environmental13 factors (such as enteric infections and high gluten load) also influence disease risk. As such, coeliac disease represents a model condition in gastroenterology and autoimmunity with exquisite pathophysiological insight.

Although studies performed in biopsy samples and human tissue pioneered important discoveries in coeliac disease and continue to be key in the study of its pathogenesis, the development of animal models in coeliac disease has long been an unmet need, in particular to promote and accelerate development and testing of preclinical therapies. Various animal models have been developed that reveal key relevant pathways amenable to diagnostic and therapeutic modulation, as well as additional risk factors that constitute future targets for primary prevention. Most models are based on MHC class II transgenic mice expressing HLA-DQ2 or HLA-DQ8 (refs14,15), as well as transgenic expression of IL-15 (ref.16), a key cytokine in cytotoxic transformation of intraepithelial lymphocytes. Animal models have also revealed the role of microbial factors in the metabolism of the main dietary trigger, gluten, as well as other dietary components (such as the essential amino acid tryptophan) that participate in the activation of immune pathways that can affect coeliac disease risk17,18,19. Models that combine genetic susceptibility and transgenic expression of IL-15 have been essential to unravel epithelial-cytotoxicity mechanisms and the role of transient viral infection in the breakdown of oral tolerance to gluten20. Although no single mouse model recapitulates all features of human disease, well-characterized humanized mouse models expressing different key features of coeliac disease pathogenesis and disease stages are now available and represent an invaluable research tool.

In vitro models based on organoid technology have now gained attention. As in other intestinal inflammatory disorders, 3D organoids, as well as 2D organoid-derived monolayers from patients with coeliac disease, expressed phenotypic differences compared with those derived from healthy individuals as controls21,22,23. Advantages of these tools reside on the physiological complexity of the intestinal epithelium compared with classic transformed or primary cell lines. The limitations are common to organoid modelling, including lack of vasculature and immune cells, high cost, technical difficulties and the closed nature of the 3D structure. Chip technology, microfluidics and co-culturing systems could address some of these limitations24,25. However, collectively, the cellular and mouse models developed in the past decade provide a long-awaited milestone that should stimulate translational and preclinical research in coeliac disease.


Despite the key milestones achieved, there is limited understanding of pathways of disease tolerance and tissue destruction. This gap in knowledge limits the development of preventive agents, pharmaceutical adjuncts to diet or curative therapies for coeliac disease. Furthermore, one consequence of the lack of prescription therapies and alternatives to a gluten-free diet is that patients might not consistently receive follow-up care26, so the medical community and, to a lesser extent, the research community, is disengaged from patient needs and the burden of disease. In addition, as suspected by many in the research community, several different coeliac disease phenotypes exist that should be better defined, as differing treatments could be required. In particular, improved quantitative assays that enable clinical and immune phenotype to be accurately defined will play a crucial part in future efforts to develop therapeutics, and might also enable coeliac disease to be redefined and diagnosed on the basis of a recall immune response to gluten.


In contrast to other T cell-mediated organ-specific immune diseases, many of which are genetically linked or associated with coeliac disease, researchers can undertake patient-based so-called proof-of-concept studies with outcomes broadly relevant to understanding and treating other conditions. For example, antigen-specific adaptive immunity has a central role in many serious autoimmune diseases27, but coeliac disease is the only one for which molecular determinants of cellular and humoral immunity are confidently known, and tissue from the affected organ can be sampled while exposure to the causative antigen is safely manipulated. Blood and tissue biomarkers of humoral immunity including gliadin and autoantigen (TG2)-specific antibodies, B cells and plasma cells can be assessed, and the gluten-specific CD4+ T cell population can be studied in gut tissue, repeatedly in blood for single-cell analyses or in fresh samples for functional assessments28. A newly characterized human serum cytokine release profile dominated by pronounced, early elevations in the T cell-associated cytokine IL-2 following acute gluten exposure provides an additional biomarker for coeliac disease research and promises to inform diagnostics and therapeutics development11,29. Relevant animal models are available to reverse-translate hypotheses generated from human studies, and progress is being made in the development of physiological coeliac epithelial models based on organoid technology to study variations in gene expression21, microbiota–host interactions22 and immune response to gliadin23. Altogether in vitro systems and the latest mouse models enable understanding of specific pathogenic mechanisms that are difficult to study clinically and for preclinical drug testing. Thus, researchers have developed a unique toolbox for understanding and developing treatment of antigen-specific cell-mediated human disease by focusing their efforts on coeliac disease. In fact, patients with coeliac disease are often affected by other common autoimmune diseases such as type 1 diabetes mellitus30. Future research implementing mechanistic models, including organoids, to selectively modify gluten immunity is likely to be broadly applicable to antigen-specific immunotherapy of autoimmune disease.

Milestones and gaps in diagnosis

By epidemiological standards, coeliac disease is common (affecting nearly 1% of the worldwide population) and has shown increasing incidence over the past several decades3. On the basis of birth cohort studies in Finland and Colorado, USA, there is evidence that disease penetration is deeper than commonly assumed31.


Researchers do not know why disease incidence is increasing, although environmental factors including viral infections during childhood or changes in gut microbiota (composition or metabolite production)32, which have led to an increase in many autoimmune and allergic conditions, have been implicated. Despite the combination of high prevalence and low diagnosis, major questions have emerged about who to test for coeliac disease and when. Although screening of first-degree relatives might be feasible, there is insufficient data to determine whether there is a benefit to screening asymptomatic individuals, particularly adults33. The alternative to screening is a case-finding approach, but the optimal set of clinical criteria that should trigger testing has not been established, and there is not a well-defined set of symptoms that increases the probability of a diagnosis of coeliac disease34,35. The primary limitation of case finding, even when well implemented, is that subclinical cases will be missed and, owing to the many protean manifestations of coeliac disease and symptom overlap, diagnosis will be delayed as the condition is overlooked or not considered in the differential diagnosis. The correct balance between the costs and unintended consequences of mass screening and missed opportunities to improve health outcomes by addressing perpetually low coeliac disease diagnosis rates has yet to be found.

There is also disagreement regarding diagnostic standards as to the necessity of intestinal biopsy. A biopsy-free approach for those with markedly elevated serum TG2 IgA levels (>10 times the upper limit of normal of the assay) was delineated by the European Society for Paediatric Gastroenterology, Hepatology and Nutrition (ESGPHAN) in 2020 (ref.36), but this approach has not been formally adopted by paediatric counterparts in the USA, and the more rigid non-biopsy pathway outlined in the ESPGHAN 2012 guideline was not necessarily implemented, even in central Europe37. Guidelines for diagnosis of coeliac disease in adults have continued to advocate for intestinal biopsy5, although a biopsy-avoidant approach was offered by the British Society of Gastroenterology in 2020 in the context of the COVID-19 pandemic38. There is also debate surrounding best practices for gluten challenge in patients already on a gluten-free diet before testing for coeliac disease, how to evaluate patients whose diagnosis of coeliac disease did not include a small intestinal biopsy for eligibility in clinical trials and how to manage these patients during clinical evaluation of non-responsive coeliac disease5,39,40.


The uncertainty regarding whether and how to screen for coeliac disease in average-risk and high-risk individuals provides the clinical equipoise necessary to justify a randomized trial. For feasibility, testing screening strategies should first be planned in high-risk groups such as those with a family history of coeliac disease. Although a non-biopsy approach will remain the subject of ongoing debate, it might be rendered moot if a non-invasive diagnostic method is validated to have high-performance characteristics, such as a simple, HLA-DQ-diagnostic blood-based assay identifying gluten-specific T cells or biomarkers released by T cells in response to gluten in vivo or ex vivo11,41,42. These modern assays are less dependent on gluten avoidance and/or exposure and might ultimately prove to obviate a gluten challenge. Such a test could foreshadow redefinition of coeliac disease as an acquired antigen-specific immune disorder diagnosed by the presence of gluten-specific T cells. With improved alignment of international and paediatric and adult coeliac disease diagnostic approaches, resources would be freed to focus on crucial questions related to treatment outcomes.

Milestones and gaps in management

Major advances in coeliac disease management to date have been identification of the role of gluten in perpetuating the disease43, identification of HLA-DQ2.5 and HLA-DQ8 as the main haplotypes associated with coeliac disease44, and confirmation of TG2 as an auto-antigen and TG2 IgA antibodies as a biomarker of untreated disease45. The capacity to identify gluten peptide sequences in foods and the consensus for 20 ppm as the upper threshold of gluten for a foodstuff to be considered gluten free46 have led to more unified regulations in food processing and labelling worldwide.


Studies47,48 show that patients are not able to maintain a strict gluten-free diet owing to the great difficulty of adherence, but, as we are all aware, no alternatives exist as yet. In practice, many patients are lost to follow-up, particularly those who do not adopt or who discontinue a gluten-free diet, so the long-term population outcomes are not well characterized26,49. Nevertheless, it is known that histological recovery (villi and/or gut healing) is inconsistent, and it seems that younger patients recover better than older patients50. Researchers acknowledge that the long-term implications of undiagnosed or undertreated coeliac disease are poorly understood51. There was broad acknowledgement among the workshop attendees that poor understanding of the disease in the medical community and broader population, coupled with misconceptions about indications for a gluten-free diet, has confused many about the seriousness of coeliac disease. On the other hand, the higher cost of gluten-free products, as well as difficulties in accessing an expert coeliac dietitian, are major challenges for the patient community. There was also consensus that the scarcity of coeliac disease academic research centres, particularly in North America (in contrast to the many for inflammatory bowel disease (IBD) and type 1 diabetes mellitus) and the lack of young researchers studying coeliac disease, were major impediments. Initiatives to partner with primary or secondary centres to facilitate the diagnosis and management of patients with coeliac disease, for instance, through more timely and efficient access to endoscopy and dietetic services, would improve diagnosis and clinical management, providing that health-care professionals are educated in the current standards. Quality certification programmes for clinics or health-care professionals involved in the care of patients with coeliac disease, recognized by scientific societies, can help to achieve this milestone (coeliac disease centres). The dearth of pharmaco-economic data52 has led to an underappreciation of disease burden by employers, insurers and government, and has also severely limited the development of treatments.


There is increasing interest and support from industry for development programmes in coeliac disease, and the number of potential therapeutic targets and clinical trials has grown exponentially over the past 15 years53,54. In addition to the much-needed therapies in coeliac disease, there is a need to improve non-pharmacological management of coeliac disease through optimization of the only currently available management — the gluten-free diet. This progress can be achieved by providing financial support to patients; intensifying education efforts in the patient and medical community and the food industry; improving access to a coeliac dietitian, which requires training programmes and patient access through coverage of these services; implementation of new monitoring tools in food, urine and stool gluten immunogenic peptide detection tests in standard of care. New biomarkers (such as IL-2 and circulating gluten-specific T cells11,29,41) could both simplify the diagnosis, especially when the individual is already on a gluten-free diet, and reduce the burden of study procedures in drug trials in coeliac disease.

Milestones and gaps in funding

Research in coeliac disease has long been a case of accomplishing much with little. Consistent with the authors’ anecdotal experience, systematic review of NIH funding has shown that coeliac disease receives proportionally less funding than a range of comparable conditions (US$3 million annually compared with US$16 million for Crohn’s disease, US$13 million for Barrett oesophagus and US$7 million for nonalcoholic fatty liver disease (NAFLD)55, a situation that likely is the cause rather than the effect of a relatively small pool of dedicated investigators. Research efforts in coeliac disease have proved highly efficient, leading to better understanding of its pathophysiology than that of many better-funded gastrointestinal conditions, such as IBD and Barrett oesophagus. Understanding of the key steps in pathophysiology has led to excellent diagnostic tests, which have in turn enabled large and highly accurate epidemiology studies that have uncovered very large populations of coeliac disease outside Europe and North America, which has previously not been recognized, as well as new insights into age and risk factors for coeliac disease onset. With some high-profile exceptions56,57, many of these studies were funded by sources outside the USA. The 2020 federal budget passed by the United States Congress explicitly encourages the NIH to devote sufficient, focused research to the study of coeliac disease; this new milestone might mark an inflexion point in the dedication of public funds to support coeliac disease research in the USA. We are unaware of similar mandates outside the USA.


The coeliac disease research and dedicated clinical community is barely at replacement levels. There is a desperate need in many areas for new expert coeliac disease centres, and in some areas coeliac groups have disappeared with the retirement or move of a single dedicated clinician or researcher. Along with providing high-quality care for patients with coeliac disease, which is currently not routine in non-specialized practices, these clinics are synergistic with local research efforts providing access to patients and patient materials for research. New and increased funding would catalyse and sustain a new generation of coeliac disease centres, supporting patients and research in the coming years. Efforts should be made to improve training of community physicians and other health-care providers through symposia, webinars and development of clinical guidelines, as well as increasing opportunities for research funding coming from industry or government (Table 4).

Table 4 Models for innovation and potential application in coeliac disease


As with many areas of research today, laboratories and clinical groups working individually will only be able to make incremental gains. Larger problems will only be able to be solved by larger teams. For both clinical and basic research, multinational networks, as exist for other conditions such as type 1 diabetes mellitus and IBD will be needed to address some of the most fundamental questions in coeliac disease. Relevant examples include TrialNet (in the diabetes research community) and ImproveCareNow for IBD, both of which have accelerated research in their respective fields. Researchers, physicians and stakeholders are working collaboratively with the community to accelerate innovation, discovery and the application of new knowledge to disease management, such as adoption of novel tools to detect gluten excretion in urine and stool in clinical practice58,59. Such networks will enable efficient clinical trials providing sufficient numbers of heterogeneous patients to ensure that findings are generalizable and reproduceable. In addition, networks of laboratories will enable distribution of the cost and expertise needed to implement the latest technologies, including immune cell phenotyping, microbiome characterization, genome sequencing and reverse translation into improved animal models. In turn, this network would serve as an incubator for new clinicians and researchers, thereby forming a virtuous cycle.

As discussed in the next section, creation of an international coeliac disease consortium should be considered a key priority for the next decade. A summary of the milestones and gaps identified in coeliac disease is provided in Table 1, and a timeline of milestones in pathophysiology, diagnosis, treatment and management of coeliac disease is provided in Fig. 1. These discoveries include examples of how coeliac disease researchers have made substantial contributions through partnership with type 1 diabetes mellitus researchers to include secondary aims related to coeliac disease in multi-site multinational collaboratives (for example, the TEDDY study60) and of how new therapeutic concepts in the autoimmunity field have been applied to coeliac disease61.

Fig. 1: Timeline of major advances and discoveries in coeliac disease.

Graphical timeline description of the major milestones and discoveries in coeliac disease diagnosis, pathogenesis and clinical management since the discovery of its main environmental trigger. Detailed information and references related to each milestone are provided in Tables 2 and 3. GFD, gluten-free diet; TG2, tissue transglutaminase 2.

Final comments and reflections

Over the past decades, the field of coeliac disease has had many research accomplishments to celebrate. We have gained tremendous understanding of the physiopathology of the disease, which is one of very few autoimmune diseases for which the inciting antigen can be administered safely, with the ability to track antigen-specific T cell responses. Thus, coeliac disease is a very attractive model for antigen-specific immune tolerance and other therapies. There are great opportunities for major research in coeliac disease with a potential for high returns on investment. However, as described already, the most important challenges and opportunities require the coordination of efforts in the laboratory and in the clinic and systematic data collection that exceeds the abilities of research groups working in isolation. As coeliac disease is common and heterogeneous with both individual and regional variations, a multinational consortium will be essential to solving the current gaps in diagnosis and management. At the same time, the strong current foundation of knowledge regarding coeliac disease pathophysiology and clinical impact, along with the advanced assortment of powerful clinically available tests such as highly accurate serology and laboratory technologies including isoloation of circulating gluten-specific T cells, suggests that with targeted investment, there is the opportunity to make substantial progress in coeliac disease that would benefit autoimmune disorders broadly.

Specifically, this multidisciplinary working group makes the following recommendations for coeliac disease.

  • Increase government funding, as philanthropic and industry funding is insufficient to achieve common goals. This approach would require lobbying government to establish priority to allocate research funding in coeliac disease. Focusing on early detection and improvement in treatment and management of coeliac disease would reduce health-care costs, which will ultimately benefit the community.

  • Improve understanding of coeliac disease as a serious medical condition among the health-care provider community, government and the public.

  • Develop the infrastructure to support an international consortium that links clinical, microbiome, genetic and immunological data, alongside adult and paediatric patient data, into one accessible community resource that can promote mechanistic study of human disease, evidence-based management approaches and clinical trials.

  • Innovative models that have been successful in managing other conditions could potentially be implemented in coeliac disease. For instance, successful multicentre trials for treatment and prevention in populations with known difficulties in recruitment have been implemented by various groups, such as paediatric oncology62 and food allergy63. Moreover, population databases to establish risk factors as well as screening programmes have been implemented for IBD64 and cancer (such as the SEER database, which is supported by the Surveillance Research Program in the NCI’s Division of Cancer Control and Population Sciences. Collaborative multidisciplinary networks have improved the quality of care of patients with cystic fibrosis65 and IBD (such as the Promoting Access and Care through Centres of Excellence (PACE) network in Canada). More detailed explanation of various models for innovation that can be applied in coeliac disease are shown in Table 4.


Overall, we remain confident that research breakthroughs in the near term have the potential to greatly improve clinical care in coeliac disease and facilitate innovations across autoimmunity. However, if funding opportunities do not increase for coeliac disease in the coming years, then the breakthroughs needed to continue to advance and possibly cure this morbid condition will be delayed or lost. We hope that this Roadmap will provide guidance to private organizations and governmental agencies justifying and prioritizing funding for coeliac disease, a common and serious yet underestimated condition.


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M.I.P.-S. received an Innovation Grant from CCC, Medicine Internal Career Research Award, Division of Gastroenterology AFP grant, and Farncombe Family Digestive Health Research Institute Award. J.A.S. is supported by the National Institute of Diabetes and Digestive and Kidney Diseases of the NIH under award number K23DK119584. The content is solely the responsibility of the authors and does not necessarily represent the official views of the NIH or the Canadian Institutes of Health Research. E.F.V is funded by a CIHR grant 168840 and holds a Canada Research Chair. R.P.A. declares no funding. The authors thank the hospitality of the Faculty House at Columbia University and Implementation Committee, C. Beckman and K. Cervenka. The authors thank the organizing committee, P. H. R. Green and J. A. Murray, the scientific committee P. H. R. Green (Society for the Study of Celiac disease (SSCD) Past President), C.P.K. (SSCD President), B.L. (SSCD President Elect), J. A. Murray. (SSCD Past President) and E.F.V. (SSCD Past President). Special thanks for the contribution of other Consensus Workshop Faculty: D. Adams (Vanderbilt Center Celiac Clinic, USA); A. Alaedini, G. Bhagat, S. Krishnareddy, N. R. Reilly, A. R. Lee (Columbia University Celiac Disease Center, USA); S. Moleski (Jefferson Celiac Center, USA); B. Tycko (John Threurer Cancer Center, USA); M. J. Blaser (Rutgers University, USA); S. P. Burke, C. Elson; R. S. Chuong and L. Harris (Mayo Clinic. USA); B. Jabri, C. Semrad and R. Verma (University of Chicago, USA); M. Leonard and A. Fasano (Center for Celiac Research and Treatment at Massachussets General Hospital, USA); E. Liu (Children’s Hospital Colorado, USA); A. Cartee (University of Michigan, USA); E. Charles (University of Alabama, USA); A. Rothermel (NIAID, NIH, DHHS); M. Geller, D. Ceizler and R. English (Celiac Disease Foundation); F. Leon (Provention Bio) and A. Sapone (Takeda Pharmaceuticals). Only participants of the workshop included as authors were involved in the writing of this Roadmap Review.

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Correspondence to Elena F. Verdu.

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Competing interests

B.L. has consulted for Takeda and Anokion. D.A.L. receives salary support from Takeda Pharmaceuticals unrelated to this manuscript. M.I.P.-S. has consulted for Takeda and Lupin unrelated to this manuscript. J.A.S. has consulted for Takeda Pharmaceuticals and received grant funding from Glutenostics, Milky Way Life Sciences, the Celiac Disease Foundation and BEYOND Celiac. E.F.V. received grant funding from Biocodex Foundation and Gilead unrelated to this manuscript. R.P.A. has served as consultant for Takeda, GSK, Anokion, Allero Therapeutics, TregTherapeutics and EVOQ Therapeutics. R.P.A. is founder and shareholder of Novoviah Pharmaceuticals and is the inventor of patents relating to the diagnosis and treatment of coeliac disease. The remaining authors declare no competing interests.

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Nature Reviews Gastroenterology & Hepatology thanks Stefano Guandalini, Knut Lundin, David Sanders and the other, anonymous, reviewer(s) for their contribution to the peer review of this work.

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Pinto-Sanchez, M.I., Silvester, J.A., Lebwohl, B. et al. Society for the Study of Celiac Disease position statement on gaps and opportunities in coeliac disease. Nat Rev Gastroenterol Hepatol (2021).

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