What We Don't See: A Pre-Capstone Reflection on XDP
Family genetics can be brutal.
Sometimes traits pass down quietly—unnoticed, unspoken, or simply accepted as part of life. Other times, they reveal something deeper: patterns that exist across generations but remain invisible to most people.
My mother is an avid viewer of the Filipino drama anthology series, Maalaala Mo Kaya (“Would You Remember?”). This decades-long program features real-life stories submitted by viewers, often through letters addressed to the show’s host, Charo Santos. Each episode brings these stories to life through dramatized reenactments—sometimes featuring well-known actors—as the letter is read on screen.
A few of those episodes caught my attention.
I won’t go into the full details of each story, but they shared a common thread: X-linked Dystonia Parkinsonism (XDP).
What struck me wasn’t just the condition itself—but how little it is talked about.
I didn’t learn about XDP in school. I didn’t encounter it in mainstream health discussions. Instead, I learned about it through storytelling.
And that made me pause.
How can something so significant remain largely unknown?
XDP is not an infectious disease. It does not spread through contact or environment. It is inherited—passed down through families, often carried by women and expressed in men due to its X-linked nature.
It moves quietly across generations.
And yet, despite ongoing research in institutions outside the Philippines, awareness remains limited. Even within Filipino communities, it is often only widely recognized in regions where it is most visible—particularly on Panay Island.
This raises an important question: does awareness depend on proximity?
As someone who is not from Panay, I initially had no reason to think about XDP. But as a Filipino, I feel a responsibility to understand it—not out of fear, but out of awareness.
This reflection is part of my preparation for a data analytics capstone project focused on XDP.
Before analyzing data, I want to understand the story behind it.
Because sometimes, what matters most isn’t just what we can measure—but what we have yet to notice.
🏝️ A Place People Already Know
Panay Island, located in the Western Visayas region of the Philippines, is known for many things—rich culture, regional cuisine, and its proximity to one of the country’s most internationally recognized destinations: Boracay Island.
Boracay, part of Aklan province, is often associated with white sand beaches, tourism, and global visibility. For many people outside the Philippines, it may be the only familiar reference point to the region.
But beyond the beaches and travel guides, there are stories that remain largely unseen.
One of them is XDP, a rare genetic condition associated with individuals who have ancestry from Panay.
Even in areas like Aklan, where Boracay is located, XDP is not widely recognized as a defining issue. Its presence is tied not to the place itself, but to the ancestry of the people who live there.
X-linked Dystonia Parkinsonism (XDP)
Before going any further, it’s important to understand what X-linked Dystonia Parkinsonism (XDP) actually is.
XDP is a rare neurological disorder that affects movement. It primarily impacts areas of the brain responsible for controlling muscle coordination, particularly the basal ganglia. As the condition progresses, individuals may experience involuntary muscle contractions (dystonia), tremors, and difficulty with movement similar to Parkinson’s disease.
Unlike infectious diseases, XDP does not spread from person to person. It is inherited through a genetic mutation located on the X chromosome, which is why it follows a specific pattern within families.
Because of this inheritance pattern, XDP predominantly affects men. Males have only one X chromosome, so if that chromosome carries the mutation, there is no second copy to compensate. Women, on the other hand, typically have two X chromosomes and may carry the mutation without showing symptoms, passing it on across generations.
Most documented cases are linked to individuals with ancestry from Panay Island in the Philippines. This is due to a historical founder effect, where a genetic mutation becomes concentrated within a specific population over time. However, this does not mean the condition is limited by geography—it reflects ancestry, not location.
Symptoms often appear in adulthood, and the progression of the condition can significantly impact quality of life. Because it is rare and not widely discussed, many people outside of affected communities may never have heard of it.
Understanding what XDP is—and who it affects—is the first step toward recognizing why awareness remains limited, and why it deserves more attention.
A Brief History of XDP
X-linked Dystonia Parkinsonism (XDP) was first described in the 1970s in the Philippines, when doctors began observing a pattern of unusual movement disorders affecting men from Panay Island. At the time, the condition did not neatly fit into known neurological categories, as it combined features of both dystonia and Parkinson’s disease.
Over time, researchers recognized that these cases were not isolated. Families across Panay were reporting similar symptoms appearing across generations, particularly among male relatives. This pattern led scientists to investigate a genetic cause.
By the 1990s and early 2000s, advances in genetic research allowed scientists to identify the condition as X-linked, meaning it was inherited through the X chromosome. Further studies eventually traced the origin of the mutation to a single ancestral source—a phenomenon known as the founder effect.
More recently, international collaborations between Filipino researchers and institutions abroad, including major research centers in the United States, have helped deepen the understanding of XDP at the molecular level. Studies have focused on how specific genetic elements affect brain function, as well as potential pathways for treatment.
Despite these advances, XDP remains a condition with limited public visibility. Its history reflects both scientific progress and the ongoing challenges of bringing visibility to diseases that primarily affect specific populations.
What XDP Does to the Body
X-linked Dystonia Parkinsonism (XDP) is a neurological disorder that primarily affects movement. It targets areas of the brain responsible for controlling muscle coordination, particularly the basal ganglia.
In the early stages, individuals often experience dystonia, which involves involuntary muscle contractions. These can cause abnormal postures, twisting movements, and difficulty controlling specific parts of the body.
As the condition progresses, symptoms may begin to resemble Parkinson’s disease. This can include tremors, muscle stiffness, slowed movement, and difficulty with balance and coordination.
Over time, these symptoms can become more severe and may significantly affect a person’s ability to perform everyday tasks. Speech and swallowing can also be impacted in later stages.
XDP is a progressive condition, meaning symptoms worsen over time. While treatments may help manage symptoms, there is currently no known cure.
Awareness That Doesn’t Spread
Television programs like Maalaala Mo Kaya do more than tell stories—they often provide resources at the end of each episode, including links and information for viewers who want to learn more.
However, even with these efforts, XDP still does not seem to be widely discussed in mainstream conversations.
This raises an important question: why doesn’t that awareness carry over?
Part of the answer may lie in how people engage with media. Watching a story is often a passive experience rather than an active pursuit of understanding. While viewers may feel emotional and recognize that the condition is real, only a small number take the next step to actively seek more information.
It is also possible that awareness exists in specific communities—particularly among those directly affected—but does not always reach a broader audience. From a distance, it can appear as if the condition is not widely known, when in reality, it may simply not be visible in certain spaces.
In this way, XDP exists in a space between being known and being widely understood.
Accessibility vs. Awareness
Episodes of Maalaala Mo Kaya are widely accessible online, including on YouTube, where some are even available with English subtitles.
This means that stories about conditions like XDP are not limited to television broadcasts in the Philippines—they can potentially reach a global audience.
However, accessibility does not always translate to awareness.
Even when these stories are available to a wider audience, they are still often consumed as individual narratives rather than as entry points into deeper understanding. Viewers may watch, empathize, and move on without further exploration.
This highlights a key gap: making information available is not the same as making it visible or widely understood.
In the case of XDP, the stories exist, the access exists—but sustained awareness remains limited.
The Media and the General Public
While television programs can be powerful in creating emotional engagement, they are still primarily forms of entertainment. Viewers may connect with the story, feel empathy, and even remember specific scenes—but that does not always translate into long-term awareness or deeper understanding.
In many cases, once the episode ends, attention shifts to the next story, the next program, or everyday life. This is not unique to any one audience; it reflects how people generally consume media.
As a result, important topics like XDP may be recognized in the moment, but not fully retained or explored beyond that initial exposure.
Emotional engagement can make a story memorable—but it does not guarantee that its message will be carried forward.
Case Example: XDP in Storytelling
One example of how XDP is introduced to the public can be found in the Maalaala Mo Kaya episode Class Picture (2015).
The story follows Bert, a dedicated teacher from Aklan, whose life is gradually affected by symptoms of XDP. What begins as subtle changes—difficulty with speech, walking, and writing—eventually leads to a formal diagnosis after tracing his family history. Notably, his uncle had previously been diagnosed with the same condition.
The episode highlights the progressive nature of XDP and its impact on everyday life, including work, independence, and family dynamics. It also brings attention to the challenges of treatment, particularly the financial burden of procedures such as Deep Brain Stimulation (DBS).
Stories like this make XDP visible on a personal level. They show how the condition affects real people, not just in clinical terms, but in lived experience.
However, while these narratives create emotional awareness, they do not always lead to broader public understanding or sustained discussion. The condition becomes known within the context of the story, but may not extend beyond it.
What stood out to me in this episode was not just the story itself, but the performance that brought it to life. While I may not personally follow the actor who portrayed Bert, this particular role felt grounded and convincing. It allowed the focus to remain on the experience of living with XDP rather than on the actor.
In that sense, the portrayal became a bridge—making a complex and unfamiliar condition more relatable, even for viewers who had never heard of it before.
Why XDP Is Still Not Widely Talked About — And Why That Matters
Despite being featured in programs like Maalaala Mo Kaya and supported by research institutions, XDP is still not widely discussed among the general public.
Part of the reason may be the nature of media exposure. Television programs can introduce real-life stories and even provide resources for further learning, but awareness does not always extend beyond the moment.
Awareness is not only about exposure—it also depends on repetition, accessibility, and relevance.
XDP is not something that directly affects me or my family. But that does not make it irrelevant.
Health conditions like XDP are human issues. The fact that something does not affect us personally does not mean it should remain unseen.
My Goal for This Capstone
At this stage, I do not have a fully defined research question—and that is intentional.
Rather than forcing a specific outcome, my goal is to begin by exploring available public data related to XDP and understanding what patterns may emerge.
This project is not only about analyzing numbers, but also about understanding visibility—what is seen, what is recorded, and what may be missing.
In this context, the absence of data becomes as meaningful as the data itself.
How XDP Compares to Parkinson’s Disease
XDP shares several symptoms with Parkinson’s Disease, but differs in progression and cause.
While both conditions currently have no cure, Parkinson’s has more established treatments, whereas XDP remains more difficult to manage due to its rarity.
Dataset Exploration Plan
- Identify available sources
- Examine data structure
- Look for gaps
- Refine research questions
Conclusion
This project began as curiosity, but became something deeper.
XDP is not just a medical condition—it is a case of limited visibility in both public awareness and data systems.
Recognizing these gaps is the first step toward making them visible.