Investigating the RASA-1 Gene as a Cause of Arteriovenous Malformation and the Ethical Considerations

Abstract

Arteriovenous malformation is a blood vessel abnormality characterized by snarled entanglement of the vessels forming irregular connections between arteries and veins. The condition is typically asymptomatic, but 12% of the 1.34 per 100,000 person-years incidences are symptomatic, and 15% die due to this condition in the US (Bokhari, 2022). The symptoms include headaches, pain, seizures, apraxia, dizziness, dementia, hallucinations, confusion, memory deficits, behavioral disorders, and loss of consciousness (National Institute of Health, 2023). The etiology of the disease is not well known, but speculations have been made that it arises from hemorrhagic events or as a result of genetic mutation. The latter is well supported by evidence. Capillary malformation-Arteriovenous malformations are thought to occur due to RASA-1 gene mutation. Ephrin receptor B4, which regulates blood and lymphatic-vascular development and function, is believed to interact with RASA-1 in endothelial cells causing AVM by inhibiting the Ras-mitogen-activated protein signaling pathway (Chen et al., 2023). This has not been verified through a controlled study. Using a controlled study, this research aims to determine whether RASA-1 gene mutation causes AVM and whether it is hereditary. An equal number and demographic representation of AVM patients and control could be used. The genetic analysis compared with the demographic and patient information can be analyzed using a chi-squire to establish patterns. Alternatively, a family-based study can be conducted. The ethical considerations for this process have the utmost significance. The evidence generated can be improved in terms of quality by promoting collaboration, conforming to ethical standards, including informed consent and confidentiality, and avoiding researcher bias (Bansal et al., 2019). Partnership also enhances the quality of evidence, time taken, and cost of research. One should also conform to the regulations, including the institutional review board, The Office for Human Research Protection, and the Centers for Medicare and Medicaid Services, which have a bearing on this study. This research would improve the management of this condition.

Introduction

Thus, there is a gap in research where the RASA-1 gene has not been tested as the cause of AVM and the determination of whether it is hereditary. This is a gap that this research can fill. Thus, an experiment is proposed here to determine whether RASA-1 gene mutation causes AVM and whether it is hereditary. Establishing a correlation or a causal relationship could streamline the identification of high-risk patients improving their clinical outcomes by influencing their management.

Materials and Methods

Original Method

Here, it is hypothesized that RASA-1 gene mutation causes arteriovenous malformation and is hereditary. To test the hypothesis, a quantitative controlled study is proposed. This research will follow a method used by Lange et al. (2015) while seeking to establish mutations within the Filamin A gene in Xq28 as a frequent cause of neuronal periventricular nodular heterotopia. There are many similarities between this study and the proposed research. Both research aims to establish genetic mutation as the cause of a condition and determine whether it is hereditary. Therefore, both studies involve patient data collection ad mutation analysis. However, Lange et al. (2015) did not have a control group that will be included in this research to increase the validity and reliability of the findings. Thus, minimal deviations to the methodology will be made to improve the quality of the evidence.

Willing AVM patients and their families will be recruited from medical centers and neurosurgery departments. Diversity and representation will be encouraged in this population; therefore, no exclusion criteria will be used except for being diagnosed with AVM. Diagnosis will be made using magnetic resonance angiography, a specialized MRI technique focused on imaging blood vessels. This will provide a detailed image of the blood vessels confirming the presence of AVMs. Alternatively, an MRI can be used with the help of gadolinium, a contrast agent enhancing the visibility of the blood vessels. From the general population, a control group will be selected to match the age, sex, and ethnicity representation of the study group. Using the expected effect size, acceptable significance, and statistical power, the appropriate sample size will be determined. Data will be collected as proposed by Lange et al. (2015), where questionnaires will be used to collect medical history, AVM diagnosis, symptoms, treatment history, and demographic data, including age, sex, and ethnicity.

Professional Standards and Ethics

Collaboration and communication are crucial in research in contemporary society. There are several advantages of collaboration and communication. First, increased scope, breadth, and depth are accompanied by better expertise. Bansal et al. (2019) write that collaborative research enhances interdisciplinary ideas sharing, enhancing the scope, accompanied by new skills. It is doubtful that a researcher is informed in all disciplines. For example, a collaboration of a molecular geneticist and a healthcare provider in this research creates a blend where there is expertise across the field. This enhances the quality of the study and evidence generated due to the pooled expertise. Further, collaboration enhances the speed of achieving the results since two steps can be run concurrently. For example, in this research, the healthcare provider can focus on collecting AVM data while the molecular geneticist carries out sequencing. This means that the time that could have been spent on the research is reduced by almost half. As mentioned in the previous section, collaboration enhances ethical standards by overcoming researcher bias since there are multiple opinions to be considered (Bansal et al., 2019). Further, one collaboration helps mitigate ethical issues by enabling self-reflection and considering multiple viewpoints. Lastly, collaboration and partnerships save the researchers and the firms they represent money (Bansal et al., 2019). Thus, there are many advantages of collaborating with other professionals in this research.

Ethical peer review and publication are essential factors in scientific research. First, this is a quality control where the ethical standards, methodology, data analysis, and interpretation of findings are reviewed to ensure the evidence generated has high validity and reliability. Therefore, research that has passed through this process is quality, not plagiarized, and worthwhile for the scientific community (Min, 2021). Alternatively, the researchers can offer alternatives that, when employed in the research, improve the quality of the study (Min, 2021). This means that research that has passed this stage is trusted and can be applied in various disciplines as advised.

Lange, M., Kasper, B. S., Bohring, A., Rutsch, F., Kluger, G., Hoffjan, S., Spranger, S., Behnecke, A., Ferbert, A., Hahn, A., Oehl-Jaschkowitz, B., Graul-Neumann, L., Diepold, K., Schreyer, I., Bernhard, M. K., Mueller, F., Siebers-Renelt, U., Beleza-Meireles, A., Uyanik, G., . . . Hehr, U. (2015). 47 patients with FLNA associated periventricular nodular heterotopia. Orphanet Journal of Rare Diseases, 10, 134. https://doi.org/10.1186/s13023-015-0331-9

Manti, S., & Marseglia, G. L. (2018). How to obtain informed consent for research. Breathe, 14(2), 145–152. https://doi.org/10.1183/20734735.001918

Min, S. (2021). Ethics and Responsibilities of Peer Reviewers to the Authors, Readers, and Editors. Vascular Specialist International, 37(1), 1–3. https://doi.org/10.5758/vsi.213711

National Institute of Health. (2023). Arteriovenous Malformations (AVMs). National Institute of Neurological Disorders and Stroke. https://www.ninds.nih.gov/health-information/disorders/arteriovenous-malformations-avms

Pannucci, C. J., & Wilkins, E. G. (2010). Identifying and Avoiding Bias in Research. Plastic and Reconstructive Surgery, 126(2), 619–625. https://doi.org/10.1097/prs.0b013e3181de24bc

Schimmel, K., Ali, K., Tan, S. Y., Teng, J. M., M, H., DO, Steinberg, G. K., Stevenson, D. K., & Spiekerkoetter, E. (2021). Arteriovenous Malformations—Current Understanding of the Pathogenesis with Implications for Treatment. International Journal of Molecular Sciences, 22(16), 9037. https://doi.org/10.3390/ijms22169037

Seh, A. H., Zarour, M., Alenezi, M., Sarkar, A., Agrawal, A., Kumar, R., & Khan, R. A. (2020). Healthcare Data Breaches: Insights and Implications. Healthcare, 8(2), 133. https://doi.org/10.3390/healthcare8020133

Turcotte-Tremblay, A., & Sween-Cadieux, E. M. (2018). A reflection on the challenge of protecting confidentiality of participants while disseminating research results locally. BMC Medical Ethics, 19(S1). https://doi.org/10.1186/s12910-018-0279-0

Walcott, B. P., Winkler, E. A., Rouleau, G. A., & Lawton, M. T. (2016). Molecular, Cellular, and Genetic Determinants of Sporadic Brain Arteriovenous Malformations. Neurosurgery, 63(Supplement 1), 37–42. https://doi.org/10.1227/neu.0000000000001300

Wooderchak-Donahue, W., Johnson, P., McDonald, J., Blei, F., Berenstein, A., Sorscher, M., Mayer, J., Scheuerle, A. E., Lewis, T., Grimmer, J. F., Richter, G. T., Steeves, M. A., Lin, A. E., Stevenson, D. K., & Bayrak-Toydemir, P. (2018). Expanding the clinical and molecular findings in RASA1 capillary malformation-arteriovenous malformation. European Journal of Human Genetics, 26(10), 1521–1536. https://doi.org/10.1038/s41431-018-0196-1

Yao, L., Guyatt, G. H., & Djulbegovic, B. (2021). Can we trust strong recommendations based on low quality evidence? BMJ, n2833. https://doi.org/10.1136/bmj.n2833

Zuurbier, S. M., & Salman, R. A. (2019). Interventions for treating brain arteriovenous malformations in adults. The Cochrane Library, 2019(9). https://doi.org/10.1002/14651858.cd003436.pub4