Training activity information
Details
Analyse, interpret and report the results for cases referred for prenatal exome analysis
Type
Developmental training activity (DTA)
Evidence requirements
Evidence the activity has been undertaken by the trainee.
Reflection on the activity at one or more time points after the event including learning from the activity and/or areas of the trainees practice for development.
An action plan to implement learning and/or to address skills or knowledge gaps identified.
Reflective practice guidance
The guidance below is provided to support reflection at different time points, providing you with questions to aid you to reflect for this training activity. They are provided for guidance and should not be considered as a mandatory checklist. Trainees should not be expected to provide answers to each of the guidance questions listed.
Before action
- Do you understand the principles of exome sequencing, including the bioinformatic pipeline and variant filtering strategies?
- Are you familiar with variant interpretation guidelines, databases of known variants, and the challenges of interpreting variants of uncertain significance (VUS) in a prenatal context?
- What ethical considerations, such as the reporting of incidental findings, do you need to be aware of?
- Review the technical aspects of exome sequencing and variant annotation.
- Familiarise yourself with resources used for variant interpretation (e.g., ACMG guidelines, ClinVar).
- Discuss the specific referral reasons and any available family history for the cases you will be analysing with your training officer.
- Consider how you will approach cases with VUS and how this should be reflected in the report.
In action
- What are the specific steps you are currently taking to analyse and interpret the data from prenatal exome sequencing. What filters or prioritisation strategies are you applying to the vast amount of sequence variants, and why?
- What key decisions are you making right now as you assess the pathogenicity of identified variants? For instance, how are you using databases (e.g., ClinVar), in silico prediction tools, and relevant literature to evaluate the potential impact of a variant?
- What aspects of interpretation may require a multi-disciplinary approach?
- How effectively are your chosen analysis methods allowing you to identify potentially causative variants that could explain the referral reason (e.g., abnormal scan findings, family history)?
- What challenges are you encountering in this moment, such as dealing with variants of uncertain significance (VUS), interpreting compound heterozygous variants, or considering incomplete penetrance and variable expressivity?
- What insights are you gaining about the complexities of exome analysis as you work through this specific case? Are there any unexpected findings or challenges.
- If your initial analysis does not yield a clear causative variant, what alternative strategies could you employ? Could you broaden your filtering criteria, review the phenotype in more detail, or consider trio analysis if parental samples are available?
- Do you need to seek immediate clarification or advice on the interpretation of a specific variant or the overall findings from the exome analysis?
- Are you ensuring that your interpretation considers the limitations of exome sequencing (e.g., coverage gaps, inability to detect all types of variants) and the potential need for further investigations?
On action
- Begin by summarising the key findings from the prenatal exome analysis results you analysed.
- Were any significant variants identified? What were the referral reasons for these cases, and how did they relate to the exome findings?
- What challenges did you encounter in the analysis and interpretation of exome data (e.g., variant filtering, assessment of pathogenicity)?
- What skills or knowledge did you develop or improve in analysing and interpreting prenatal exome sequencing data?
- Were there any unexpected challenges or successes during the activity?
- What did you learn from these, such as the identification of novel variants or the application of specific bioinformatic tools?
- What areas for continued development have been identified as a result of this activity, such as refining your skills in variant annotation and pathogenicity assessment?
- How can you apply the learning from this activity to your routine practice when working with prenatal exome data?
- What steps will you now take to support the assimilation of what you have learned, such as familiarising yourself with relevant ACMG guidelines or genomic databases?
- What support or resources might you need to further develop in the areas identified through this reflection, such as access to expert opinions or specialised bioinformatics training?
Beyond action
- Have you revisited the experiences of analysing, interpreting, and reporting prenatal exome analysis results? Evaluate your previous experiences with exome data in the prenatal setting, considering advancements in variant interpretation and gene-disease associations.
- Compare your initial approach to filtering and prioritising variants in prenatal exomes with your current strategy. What changes have you made to your workflow?
- Review your reflections on prenatal exome analysis as part of a broader module review. What key challenges and insights have emerged regarding this complex testing modality?
- Have discussions with bioinformaticians or clinical geneticists about prenatal exome cases influenced your interpretation and reporting practices?
- Recognise how this training activity has contributed to your understanding of the application of whole-exome sequencing in prenatal diagnosis. How has your ability to assess the clinical significance of variants identified through exome sequencing developed?
- How have you applied your learning from this activity to subsequent prenatal exome cases? Have you become more adept at using specific databases or tools for variant interpretation? How has your understanding of the ethical considerations surrounding prenatal exome sequencing evolved?
- Consider how your experience with prenatal exome analysis will aid you in preparing for assessments involving complex genomic data interpretation.
- Outline specific steps for continued professional development in the area of prenatal exome analysis, such as staying updated on new guidelines, attending relevant training, or engaging in collaborative interpretation efforts.
Relevant learning outcomes
| # | Outcome |
|---|---|
| # 2 |
Outcome
Apply appropriate testing strategies to patients referred following abnormal ultrasound scan findings. |
| # 5 |
Outcome
Interpret genomic variants, including copy number changes and investigate the clinical significance of variants using bioinformatic tools using best practice guidelines. |
| # 6 |
Outcome
Interpret and report prenatal genomic findings, including appropriate recommendations for patient management. |