By Isaac Khan, PharmD · September 22, 2026
It has been a while. I have been busy building a global Medical Information function and supporting launch readiness, so I have not had much time to post. But I have continued using and experimenting with artificial intelligence (AI) in Medical Affairs and Medical Information.
A lot has changed since I began writing about this in 2023. Here is my current process for developing standard response letters, shaped by hands-on work in oncology Medical Information. The aim is a useful first draft that a medical affairs professional can verify, refine, and take through the required review process.
One of the main goals in Medical Information (MI) is to produce a solid standard response letter (SRL) draft that needs less editorial rework before scientific review and approval. For a lean Medical Affairs team, a repeatable AI-supported workflow can help reduce drafting time and reliance on external writing support. Here is my current process.
Not much has changed for me here. I still use PubMed and double-check myself with Google. The old Google machine remains one of the best ways to see what the average person is likely to encounter in the field.
What has changed is Google itself. When it provides an AI-generated summary, I use it as a secondary check on the questions and interpretations my audience may encounter. It can suggest leads to investigate, but I verify those leads against the original sources. An AI summary does not validate the completeness or accuracy of a literature search.
Gather and assess your own evidence first. Then use search summaries to spot questions or sources worth a closer look.
You need to get your AI system working within the right context from the start. This is where you set the stage.
Before I draft anything, I also define the audience and the boundaries of the task. In my case, that may mean telling the AI that it is supporting a U.S. oncology pharmaceutical company’s Medical Information department and writing for practicing oncologists, nuclear medicine physicians, and other healthcare professionals.
I then tell it to base the draft only on the materials I provide: the reference letter document, the MI lexicon, the scientific communications platform, and the study, article, poster, abstract, or structured notes in the chat. That source boundary matters. It is intended to reduce unsupported additions and keep the draft anchored to the evidence under review. It still requires source verification.
Include:
I have been touting the 3 Cs: clear, concise, and compliant. This is where I tell the AI to apply those principles and my organization’s requirements. A prompt can support that goal; qualified review determines whether the response meets it.
For each HCP request, I specify both the request type and the key question. The request type might be primary or secondary efficacy, general safety, a specific adverse event, pharmacokinetics/pharmacodynamics, concomitant use, subgroup data, or a comparison. This keeps the AI focused on the endpoints and findings that actually answer the question instead of merely summarizing the entire paper.
My priority order is simple:
Keep the priming message focused, and attach supporting documents such as example letters and style guides as needed and permitted. I prefer a small, relevant set of documents rather than everything available. Attachment limits vary by account and tool. For company work, use an organization-approved environment and follow its rules for confidential information, HCP data, and licensed source material.
Tell the AI to review a single study that you attach or upload and extract the key components you may—or may not—ultimately want to include in your response.
Specifically, ask it to identify:
These are the core building blocks of a response summary. Do not assume the AI will identify them correctly. Tell it what to extract, ask for page or section references, and check the results against the study.
The key is to have the AI organize this information in an internal, request-focused summary or table before drafting the finished response. I label this output “internal use only” and focus the prompt on evidence extraction rather than polished prose or final abbreviation rules. I also tell it not to extrapolate beyond the article or add unsupported interpretations. After checking it against the source, I use the summary to guide the next prompt.
Depending on your writing style, direct the AI to use the information from Prompt 1 to create consistent, thorough content for the letter.
I usually ask for two or three paragraphs with a deliberate flow:
Over the past few years, I have moved from a mostly paragraph-based format, as reflected in my earlier writing samples, to a mix of:
For letter-ready content, I reset the abbreviation handling rather than relying on shorthand used in the internal summary. Following the letter’s style guide, spell out each term at first mention, place the abbreviation in parentheses, and then use it consistently within the relevant section. I also specify AMA 11th edition style for terminology, units, citations, and references, along with the organization’s conventions for generic and brand names.
The good news is that, with any of these prompts, if you are not getting the result you want, you can change the prompt. This is where experimentation, trial, and error come in handy.
This step is not mandatory, but if you do not already know which graphic elements to include, ask the AI for suggestions.
Where an approved AI tool supports document editing, it may also help assemble and format graphics. Whether the AI creates the visual or only recommends it, ask for a neutral title, the exact rows and columns or axes, the data and units to display, and essential footnotes covering analysis populations, endpoint definitions, follow-up, censoring, study design, and whether an analysis was exploratory. Check every plotted value, label, and footnote against the source.
Also ask for compliance considerations specific to the visual. A graphic should not imply superiority, causation, or a comparison the study was not designed to support. Single-arm, noncomparative, off-label, and exploratory data should be labeled clearly, and abbreviations should remain consistent with the surrounding letter text.
Before moving on: Get these elements into the letter.
For a focused response, I often aim for approximately:
These are drafting targets, not evidence limits. Include additional references when needed to answer the question accurately and represent the evidence fairly. A closing sentence can point readers to additional relevant studies, but it should not replace discussion of findings that materially affect the answer.
Ask the AI to develop summary bullets for the letter and propose a logical flow of headers and subheaders that breaks up the text and makes the response easy to read and navigate.
I ask for one neutral, descriptive header, followed by one or two concise, answer-first overview bullets and then the supporting paragraphs. The header should identify the study setting or population without promotional language, and the bullets should be strong enough that a busy HCP can read only those lines and understand the main answer.
Abbreviation order matters here. I do not define abbreviations in the header. I define them once at first mention, even in the overview bullets, and then use the abbreviation consistently throughout the remaining bullets and paragraphs.
I like to prompt it to make the bullets high-level talking points, with only the key data points (eg numbers) in parentheses as reference points.
This makes it easier for medical science liaisons (MSLs) or fellow MI colleagues working at congress booths or speaking by phone to discuss the data. Give the AI clear instructions and, again, refine the prompt as you go.
At this point, I aim to have a draft that is ready for substantive editing. How close it is to finished depends on the question, the source material, and the quality of the AI output.
Remove what I call AI word slop, or word salad: overproduced language that crams several ideas into one sentence or blurs what the evidence actually says. Your judgment gives the response its clarity and voice.
Create a dedicated prompt that asks the AI to check the finished draft against the original sources and the writing requirements. Treat this as an additional check, followed by qualified human review and the organization’s approval process.
I sometimes use a separate chat because the drafting conversation can keep returning to wording I deliberately changed. Supply the original sources and requirements again so the review is not based only on the draft. A separate chat can offer another pass, but it is not an independent scientific reviewer.
Ask the AI to flag discrepancies and point to the supporting source passages for each check:
There you have it: my process in 2026. The value is a more consistent starting point for medical review and less time spent on repetitive drafting. In my experience, the strongest results come from defining the question, checking the source data, and bringing Medical Information judgment to every stage. What does your process look like for creating AI-supported standard response letters?
Isaac Khan, PharmD, is a Medical Information and Medical Affairs operations leader with more than 20 years of experience across pharmaceutical and biotech organizations. His work includes building global Medical Information capabilities and applying AI-supported tools to scientific content and medical insights. His experience spans oncology, radiopharmaceuticals, and rare disease. He writes about practical AI applications for Medical Information at MedInfoAI.com.
Connect with Isaac about AI-supported Medical Information, scientific communication, insights, and building the function that supports them.
MedInfoAI · Isaac Khan, PharmD