Healthc Pap. 2023 Jan;21(1):34-37. doi: 10.12927/hcpap.2023.26998.

ABSTRACT

Canadian and foreign governments are struggling with determining whether to reimburse expensive drugs for rare diseases. The problem is that although insurers want to offer fair access to medicines for patients with rare diseases, the drugs are often priced far above normal cost-effectiveness thresholds. This leaves insurers with no tools to determine how much to pay. This article notes one reasonable standard: prices should not, in these circumstances, allow for profiteering by innovative companies.

PMID:36692914 | DOI:10.12927/hcpap.2023.26998

Healthc Pap. 2023 Jan;21(1):28-33. doi: 10.12927/hcpap.2023.26999.

ABSTRACT

In Canada, the focus on value for money and evaluating efficacy according to traditional ways has presented challenges to the funding of drugs for rare diseases (DRDs). This commentary validates and extends two worthy recommendations from the lead paper in this issue of Healthcare Papers (Sirrs et al. 2023). The paper's first recommendation, for a pan-Canadian approach for collecting evidentiary data, is critical. In the commentary, I add to this finding by suggesting that we enable patients to track and measure their response to treatment through data capture. The second recommendation is a pan-Canadian framework for funding DRDs. I extend the recommendation with an argument for public and private payer guidance as well as a fair and transparent funding framework solely for DRDs.

PMID:36692913 | DOI:10.12927/hcpap.2023.26999

Healthc Pap. 2023 Jan;21(1):10-26. doi: 10.12927/hcpap.2023.27000.

ABSTRACT

There has been explosive growth in the market for expensive drugs for rare diseases (EDRDs). Traditional standards of evidence are not achievable for rare diseases, so lower standards are applied. The price of these drugs is extremely high. This combination of lower standards and higher prices make EDRDs attractive to manufacturers. Legislation designed to incentivize drug development for rare diseases contains loopholes that drive prices up worldwide. Canada compounds those problems with a complex network of agencies that impede communication between those providing market authorization and those purchasing drugs. Drug pricing is not related to metrics like investment or value, but rather willingness to pay. Without high-quality evidence to assess value, we inadvertently prioritize patients with rare diseases over those with common diseases, creating conflict among ethical principles such as social utility, justice and the rule of rescue. Lack of transparency over what is being funded and for whom makes it hard to mitigate challenges through effective policy development. We review the evidentiary, economic and ethical issues around EDRDs and ways to move forward, including enhanced transparency and the development of high-quality evidence to ensure that we do not pay for drugs that do not work.

PMID:36692912 | DOI:10.12927/hcpap.2023.27000

Healthc Pap. 2023 Jan;21(1):4-8. doi: 10.12927/hcpap.2023.27001.

ABSTRACT

This issue of Healthcare Papers on expensive drugs for rare diseases (EDRDs) is very timely. According to the recently released Patented Medicine Prices Review Board's 2021 annual report, EDRDs have gone from 1.7% of pharmaceutical expenditures in 2012 to 12.2% in 2021, with a compound annual growth rate between 2012 and 2021 of 31.7% compared to 6.0% for all prescription medicines (PMPRB 2022).

PMID:36692911 | DOI:10.12927/hcpap.2023.27001

Med Klin Intensivmed Notfmed. 2023 Feb;118(1):2-3. doi: 10.1007/s00063-023-00989-x. Epub 2023 Jan 24.

NO ABSTRACT

PMID:36692505 | DOI:10.1007/s00063-023-00989-x

BMC Cancer. 2023 Jan 24;23(1):82. doi: 10.1186/s12885-022-10498-3.

ABSTRACT

Mastocytosis is a very rare disorder and is divided into three prognostically distinct variants by World Health Organization: Cutaneous mastocytosis (CM), systemic mastocytosis (SM), and mast cell sarcoma or localized mast cell (MC) tumors. The wide range of complaints may cause patients to consult various clinics, with resulting mis- or underdiagnosis. Therefore, cooperation between different subspecialties is of paramount importance. In this article, we have compiled 104 adult mastocytosis cases diagnosed and followed in our Hematology and other clinics. 86 (82.7%) of 104 patients had systemic mastocytosis. Osteoporosis, disease-related complications, and secondary malignancies are important topics in this group. We know that indolent form has great survival. But smoldering or aggressive mastocytosis has a poor prognosis. CM and indolent SM have a significantly better prognosis compared to aggressive SM (p < 0.001). We found that the presence of more than 25% of mast cells in the bone marrow, the presence of concomitant marrow dysplasia, and the presence of disease-related complications affect survival (p < 0.001). In addition to the WHO classification, the IPSM scoring system is indicative of the prognosis in this rare disease.

PMID:36694141 | DOI:10.1186/s12885-022-10498-3

Front Public Health. 2023 Jan 4;10:1049349. doi: 10.3389/fpubh.2022.1049349. eCollection 2022.

ABSTRACT

Rare disease patients constitute a significant part of the healthcare system of all countries. However, the information on the experiences during disease processes and daily life of rare disease patients is still limited. So far, there is a small number of studies conducted in Türkiye, and they mainly cover specific issues like education or anxiety. Here we present a comprehensive survey analysis conducted among the patients and their families within the scope of the Istanbul Solution Platform for Undiagnosed and Rare Diseases-ISTisNA project. A total of 498 individuals responded to the survey, and 58% of the participants answered all questions. The majority of the patients were in the age range of 1-10 years (44.7%), and 91% of all the patients had a precise diagnosis. The diagnosis rate in the first 6 months was 69%, and almost 10% of the patients remained undiagnosed. The mothers were the primary caregivers (72%). Nearly 30% of the caregivers had to quit their jobs and 25% of the patients (0-18 years) had to leave school. Accessing physicians with relevant specialization and reaching treatments/medications/supplements were the two main obstacles the participants mentioned, with a frequency of 81% and 73%, respectively. Around 50% of participants noted that they commonly faced difficulties at work/school and in their social lives. The highest expectation or priority was the establishment of rare disease-specific diagnosis and treatment centers, accurate and detailed information on diseases in the Turkish language, and easy access to physicians, treatments, and supportive therapies. To the best of our knowledge, this is the most comprehensive survey conducted on the rare disease community in Türkiye. These results show that regardless of the country, the individuals affected by rare diseases and their families have similar problems and expectations. On the other hand, regional and country-specific issues are still in the line to be solved. These studies can provide a deeper insight into rare diseases and guide the activities of Türkiye's national rare disease action plan.

PMID:36684907 | PMC:PMC9846031 | DOI:10.3389/fpubh.2022.1049349

Orphanet J Rare Dis. 2023 Jan 23;18(1):15. doi: 10.1186/s13023-023-02613-9.

NO ABSTRACT

PMID:36691034 | DOI:10.1186/s13023-023-02613-9

Eur J Hum Genet. 2023 Jan 23. doi: 10.1038/s41431-023-01291-2. Online ahead of print.

ABSTRACT

Clinical exome/genome sequencing is increasingly being utilized by clinicians to diagnose various likely genetic conditions, but many cases remain undiagnosed. In a subset of those undiagnosed cases, a single heterozygous variant in an autosomal recessive (AR) condition with consistent phenotype may be identified, raising the question if a second variant is missing. Here, we report two cases of recessive conditions in which only one heterozygous variant was initially reported by clinical exome sequencing, and on research reanalysis a second heterozygous variant in trans was identified. We performed a review of the existing exome reanalysis literature and found that this aspect is often not emphasized. These findings highlight the importance of data reanalysis in undiagnosed cases where only a single disease-associated variant is identified in an AR condition with a strong link to presenting phenotype.

PMID:36690831 | DOI:10.1038/s41431-023-01291-2

Biochem Biophys Res Commun. 2023 Jan 13;645:164-172. doi: 10.1016/j.bbrc.2023.01.032. Online ahead of print.

ABSTRACT

Matrin 3 is a nuclear matrix protein that has many roles in RNA processing including splicing and transport of mRNA. Many missense mutations in the Matrin 3 gene (MATR3) have been linked to familial forms of amyotrophic lateral sclerosis (ALS) and distal myopathy. However, the exact role of MATR3 mutations in ALS and myopathy pathogenesis is not understood. To demonstrate a role of MATR3 mutations in vivo, we generated a novel CRISPR/Cas9 mediated knock-in mouse model harboring the MATR3 P154S mutation expressed under the control of the endogenous promoter. The P154S variant of the MATR3 gene has been linked to familial forms of ALS. Heterozygous and homozygous MATR3 P154S knock-in mice did not develop progressive motor deficits compared to wild-type mice. In addition, ALS-like pathology did not develop in nervous or muscle tissue in either heterozygous or homozygous mice. Our results suggest that the MATR3 P154S variant is not sufficient to produce ALS-like pathology in vivo.

PMID:36689813 | DOI:10.1016/j.bbrc.2023.01.032

Int J Mol Sci. 2023 Jan 15;24(2):1709. doi: 10.3390/ijms24021709.

ABSTRACT

Even though the application of Next-Generation Sequencing (NGS) has significantly facilitated the identification of disease-associated mutations, the diagnostic rate of rare diseases is still below 50%. This causes a diagnostic odyssey and prevents specific treatment, as well as genetic counseling for further family planning. Increasing the diagnostic rate and reducing the time to diagnosis in children with unclear disease are crucial for a better patient outcome and improvement of quality of life. In many cases, NGS reveals variants of unknown significance (VUS) that need further investigations. The delineation of novel (lipid) biomarkers is not only crucial to prove the pathogenicity of VUS, but provides surrogate parameters for the monitoring of disease progression and therapeutic interventions. Lipids are essential organic compounds in living organisms, serving as building blocks for cellular membranes, energy storage and signaling molecules. Among other disorders, an imbalance in lipid homeostasis can lead to chronic inflammation, vascular dysfunction and neurodegenerative diseases. Therefore, analyzing lipids in biological samples provides great insight into the underlying functional role of lipids in healthy and disease statuses. The method of choice for lipid analysis and/or huge assemblies of lipids (=lipidome) is mass spectrometry due to its high sensitivity and specificity. Due to the inherent chemical complexity of the lipidome and the consequent challenges associated with analyzing it, progress in the field of lipidomics has lagged behind other omics disciplines. However, compared to the previous decade, the output of publications on lipidomics has increased more than 17-fold within the last decade and has, therefore, become one of the fastest-growing research fields. Combining multiple omics approaches will provide a unique and efficient tool for determining pathogenicity of VUS at the functional level, and thereby identifying rare, as well as novel, genetic disorders by molecular techniques and biochemical analyses.

PMID:36675224 | PMC:PMC9866746 | DOI:10.3390/ijms24021709

Int J Mol Sci. 2023 Jan 14;24(2):1661. doi: 10.3390/ijms24021661.

ABSTRACT

Screening for pathogenic variants in the diagnosis of rare genetic diseases can now be performed on all genes thanks to the application of whole exome and genome sequencing (WES, WGS). Yet the repertoire of gene-disease associations is not complete. Several computer-based algorithms and databases integrate distinct gene-gene functional networks to accelerate the discovery of gene-disease associations. We hypothesize that the ability of every type of information to extract relevant insights is disease-dependent. We compiled 33 functional networks classified into 13 knowledge categories (KCs) and observed large variability in their ability to recover genes associated with 91 genetic diseases, as measured using efficiency and exclusivity. We developed GLOWgenes, a network-based algorithm that applies random walk with restart to evaluate KCs' ability to recover genes from a given list associated with a phenotype and modulates the prediction of new candidates accordingly. Comparison with other integration strategies and tools shows that our disease-aware approach can boost the discovery of new gene-disease associations, especially for the less obvious ones. KC contribution also varies if obtained using recently discovered genes. Applied to 15 unsolved WES, GLOWgenes proposed three new genes to be involved in the phenotypes of patients with syndromic inherited retinal dystrophies.

PMID:36675175 | PMC:PMC9864172 | DOI:10.3390/ijms24021661

Int J Mol Sci. 2023 Jan 4;24(2):930. doi: 10.3390/ijms24020930.

ABSTRACT

This review describes, from a chemical point of view, the top "blockbuster" small molecule orphan drugs according to their forecasted sales in 2026. Orphan drugs are intended for the treatment, prevention, or diagnosis of a rare disease or condition. These molecules are mostly addressed to the treatment of rare forms of cancer. The respiratory and central nervous systems represent other common therapeutic subcategories. This work will show how the orphan drugs market has significantly grown and will account for a consistent part of prescriptions by 2026.

PMID:36674441 | PMC:PMC9864910 | DOI:10.3390/ijms24020930

Int J Environ Res Public Health. 2023 Jan 5;20(2):968. doi: 10.3390/ijerph20020968.

ABSTRACT

At least 50% of chronic disease patients don't follow their care plans, leading to lower health outcomes and higher medical costs. Providing Patient Education Materials (PEMs) to individuals living with a disease can help to overcome these problems. PEMs are especially beneficial for people suffering from multisystemic and underrecognized diseases, such as rare diseases. Congenital disorders of glycosylation (CDG) are ultra-rare diseases, where a need was identified for PEMs in plain language that can clearly explain complex information. Community involvement in the design of PEMs is extremely important for diseases whose needs are underserved, such as rare diseases; however, attempts to involve lay and professional stakeholders are lacking. This paper presents a community-based participatory framework to co-create PEMs for CDG, that is transferable to other diseases. A literature review and questionnaire were performed, and only four articles describing the development of PEMS for rare diseases have been found, which demonstrates a lack of standardized approaches. The framework and PEMs were co-developed with CDG families and will be crucial in increasing health literacy and empowering families. We will close a gap in the creation of PEMs for CDG by delivering these resources in lay language in several languages.

PMID:36673723 | PMC:PMC9859511 | DOI:10.3390/ijerph20020968

Int J Environ Res Public Health. 2023 Jan 4;20(2):937. doi: 10.3390/ijerph20020937.

ABSTRACT

Patients with rare diseases (RDs) generally have delayed diagnosis and misdiagnosis, which lead to inappropriate care or the need to modify treatment during the course of the disease. The medical care of RD patients can be further complicated by the presence of comorbidities. In this population-based study, we evaluated the prevalence, intensity of use, and consumption of drugs prescribed to RD patients residing in Tuscany (Italy) in the years 2008-2018. Data from the Registry of Rare Diseases of Tuscany were integrated with information retrieved from regional pharmaceutical prescription databases. The overall prevalence of drug use in the RD patients was 85.4%. Drugs for the alimentary tract and metabolism and antiinfectives for systemic use showed the highest prevalence of use, while drugs for the nervous system had the highest intensity of use only in the pediatric patients. The adults exhibited a female preponderance in terms of the prevalence of use and drug consumption in almost all the age groups and therapeutic categories. Conversely, a higher prevalence of use was observed in the male children. These results provide relevant insights into drug profiles in RD patients, representing a first step for future analyses to monitor changes in drug utilization in patients with RDs over time.

PMID:36673691 | PMC:PMC9858964 | DOI:10.3390/ijerph20020937

Int J Environ Res Public Health. 2023 Jan 4;20(2):933. doi: 10.3390/ijerph20020933.

ABSTRACT

This study explores the perception of social and educational quality of life in minors with rare diseases (RDs). Two meta-analyses were performed, applying the random effects model. Results: Regarding the social Quality of Life, the meta-sample consisted of k = 40 samples, with a total population of 1943 children (mean age = 9.42 years), of whom 687 (35.3%) were girls, 615 (31.4%) were boys and 641 (33%) did not report their sex. The effect size was large (mean size = 7.68; p &lt; 0.000; 99% Confidence Interval; lower limit = 7.22; upper limit = 8.14). The results of the meta-regression and model analysis showed the importance of the measurement instrument (Paediatric Quality-of-Life Inventory and Prototypes of the Quality of life) and the dissimilarity of perception among caregivers. The nationality and the type of RD were not relevant. With respect to the educational Quality of Life, the meta-sample consisted of k = 19 samples, with 699 minors (mean age = 10.3 years), of whom 266 (38%) were girls, 242 (34.6%) were boys and 191 (27.4%) did not report their sex. The effect size was large (mean size = 7.15; p &lt; 0.000; 99% CI; lower limit = 6.35; upper limit = 7.94). The meta-regression and comparison of models showed that the type of RD was essential. The measurement instrument was a moderating variable, especially the Parent version Paediatric Quality-of-Life Inventory. This study reveals the need for further research on RDs and their social-educational effects.

PMID:36673688 | PMC:PMC9859107 | DOI:10.3390/ijerph20020933

Genes (Basel). 2023 Jan 12;14(1):196. doi: 10.3390/genes14010196.

ABSTRACT

Complex genetic disease mechanisms, such as structural or non-coding variants, currently pose a substantial difficulty in frontline diagnostic tests. They thus may account for most unsolved rare disease patients regardless of the clinical phenotype. However, the clinical diagnosis can narrow the genetic focus to just a couple of genes for patients with well-established syndromes defined by prominent physical and/or unique biochemical phenotypes, allowing deeper analyses to consider complex genetic origin. Then, clinical-diagnosis-driven genome sequencing strategies may expedite the development of testing and analytical methods to account for complex disease mechanisms as well as to advance functional assays for the confirmation of complex variants, clinical management, and the development of new therapies.

PMID:36672937 | PMC:PMC9858967 | DOI:10.3390/genes14010196

Genes (Basel). 2023 Jan 7;14(1):169. doi: 10.3390/genes14010169.

ABSTRACT

BACKGROUND: Research participant feedback is rarely collected; therefore, investigators have limited understanding regarding stakeholders' (affected individuals/caregivers) motivation to participate. Members of the Genes to Mental Health Network (G2MH) surveyed stakeholders affected by copy number variants (CNVs) regarding perceived incentives for study participation, opinions concerning research priorities, and the necessity for future funding. Respondents were also asked about feelings of preparedness, research burden, and satisfaction with research study participation.

METHODS: Modified validated surveys were used to assess stakeholders´ views across three domains: (1) Research Study Enrollment, Retainment, Withdrawal, and Future Participation; (2) Overall Research Experience, Burden, and Preparedness; (3) Research Priorities and Obstacles. Top box score analyses were performed.

RESULTS: A total of 704 stakeholders´ responded from 29 countries representing 55 CNVs. The top reasons for initial participation in the research included reasons related to education and altruism. The top reasons for leaving a research study included treatment risks and side effects. The importance of sharing research findings and laboratory results with stakeholders was underscored by participants. Most stakeholders reported positive research experiences.

CONCLUSIONS: This study provides important insight into how individuals and families affected with a rare CNV feel toward research participation and their overall experience in rare disease research. There are clear targets for areas of improvement for study teams, although many stakeholders reported positive research experiences. Key findings from this international survey may help advance collaborative research and improve the experience of participants, investigators, and other stakeholders moving forward.

PMID:36672911 | PMC:PMC9859499 | DOI:10.3390/genes14010169

Genes (Basel). 2022 Dec 22;14(1):30. doi: 10.3390/genes14010030.

ABSTRACT

The re-analysis of nondiagnostic exome sequencing (ES) has the potential to increase diagnostic yields in individuals with rare diseases, but its implementation in the daily routines of laboratories is limited due to restricted capacities. Here, we describe a systematic approach to re-analyse the ES data of a cohort consisting of 1040 diagnostic and nondiagnostic samples. We applied a strict filter cascade to reveal the most promising single-nucleotide variants (SNVs) of the whole cohort, which led to an average of 0.77 variants per individual that had to be manually evaluated. This variant set revealed seven novel diagnoses (0.8% of all nondiagnostic cases) and two secondary findings. Thirteen additional variants were identified by a scientific approach prior to this re-analysis and were also present in this variant set. This resulted in a total increase in the diagnostic yield of 2.3%. The filter cascade was optimised during the course of the study and finally resulted in sensitivity of 85%. After applying the filter cascade, our re-analysis took 20 h and enabled a workflow that can be used repeatedly. This work is intended to provide a practical recommendation for other laboratories wishing to introduce a resource-efficient re-analysis strategy into their clinical routine.

PMID:36672771 | PMC:PMC9858523 | DOI:10.3390/genes14010030

Biomolecules. 2023 Jan 9;13(1):133. doi: 10.3390/biom13010133.

ABSTRACT

Several studies have identified rare and common genetic variants associated with severe COVID-19, but no study has reported genetic determinants as predisposition factors for neurological complications. In this report, we identified rare/unique structural variants (SVs) implicated in neurological functions in two individuals with neurological manifestations of COVID-19. This report highlights the possible genetic link to the neurological symptoms with COVID-19 and calls for a collective effort to study these cohorts for a possible genetic linkage.

PMID:36671517 | DOI:10.3390/biom13010133