Pediatrics

What to Expect: Prognosis and Long-Term Care

At a Glance

Miller-Dieker syndrome is a life-limiting genetic condition resulting in severe developmental delays. Most children do not survive past early childhood, with respiratory issues being the primary risk. Pediatric palliative care from diagnosis is crucial to maximize comfort and quality of life.

Navigating the future with a child who has Miller-Dieker Syndrome (MDS) requires a delicate balance of direct honesty and profound compassion. Understanding the long-term outlook is not about losing hope, but about redefining it—shifting the focus toward maximizing every moment of comfort and connection your child has.

The Developmental Outlook

Because the 17p13.3 deletion deeply affects how the brain is structured, children with MDS experience severe and profound developmental delays ^[1].

Milestones: Most children do not reach traditional milestones such as sitting independently, crawling, or speaking ^[2].
Communication: While verbal language is often not possible, many parents find deep meaning in non-verbal cues—a change in breathing, a look in the eyes, or a relaxation of the body when held.
Complexity: As children grow, their medical needs often become more complex, requiring ongoing management of seizures and respiratory health ^[3].

Understanding Life Expectancy

MDS is a life-limiting condition, and the reality of a shortened life expectancy is one of the hardest truths for families to face.

Survival Statistics: Most children with MDS do not survive past early childhood ^[4]. Research indicates that approximately 10% of children with MDS survive to age 10 ^[5].
Causes of Mortality: The most common causes of death are related to the respiratory system, specifically aspiration pneumonia (where food or saliva enters the lungs) and respiratory failure ^[1]^[6]. Intractable seizures can also contribute to the overall fragility of a child’s health ^[7].

The Role of Pediatric Palliative Care

A common misconception is that palliative care is only for the very end of life. In reality, pediatric palliative care is an “extra layer of support” that should ideally begin at the time of diagnosis ^[8].

Palliative care teams focus on:

Symptom Management: Ensuring your child is free from pain, managing secretions, and helping control difficult seizures ^[9].
Quality of Life: Helping your family determine what “quality of life” means to you and aligning medical treatments with those values ^[10].
Decision Support: Acting as a guide through complex medical choices, such as whether to use a breathing machine or a feeding tube ^[10].
Caregiver Support: Providing psychological and spiritual support for the entire family as you navigate this journey ^[11].

Focusing on Comfort and Quality

As the condition progresses, the primary goal of care often shifts from aggressive medical interventions to comfort-directed care ^[12].

This might include:

Home-Based Care: Utilizing home nursing and hospice resources to keep your child in a familiar, loving environment rather than the hospital ^[13].
Advanced Care Planning: Having open conversations with your team about your wishes for your child’s care during a crisis. This ensures that your child’s dignity and comfort are always prioritized ^[14].
Support Networks: The medical team helps with your child’s physical body, but connecting with other families who share this journey is crucial for emotional survival. Ask your team or social worker about rare disease or lissencephaly parent support groups ^[11].

While the path with MDS is undoubtedly difficult, many families find that focusing on the “here and now”—the warmth of a cuddle, the peace of a stable day—helps them navigate the uncertainty of the future.

Common questions in this guide

What is the life expectancy for a child with Miller-Dieker syndrome?

Miller-Dieker syndrome is a life-limiting condition, and most children do not survive past early childhood. Research indicates that approximately 10% of children with the condition survive to age 10.

What are the most common causes of passing away in children with MDS?

The most common causes of mortality are related to the respiratory system, particularly aspiration pneumonia and respiratory failure. Severe, difficult-to-control seizures can also significantly impact a child's overall health and fragility.

Will my child with Miller-Dieker syndrome reach normal developmental milestones?

Because the syndrome deeply affects brain structure, children typically experience severe developmental delays. Most children do not reach traditional milestones like sitting independently, crawling, or speaking, but families often find deep connection through non-verbal cues.

When should we start pediatric palliative care for a child with MDS?

Pediatric palliative care is an extra layer of support that ideally begins at the time of diagnosis, rather than just at the end of life. Palliative teams help manage symptoms like seizures and pain, improve quality of life, and support your family through complex medical decisions.

What does comfort-directed care mean for my child?

Comfort-directed care shifts the focus from aggressive medical interventions to prioritizing a child's comfort and dignity. This often involves home-based care or hospice resources to keep the child in a familiar, loving environment while managing symptoms effectively.

Curated prompts to bring to your next appointment.

1.What does 'quality of life' realistically look like for a child with MDS as they get older?
2.Can you help us connect with a pediatric palliative care team now, even though we aren't at the end-of-life stage?
3.What specific medical signs should we look for that indicate my child's comfort level is decreasing?
4.If our goal is to keep my child at home as much as possible, what resources or home-care nursing are available to us?
5.How will our care team help us navigate difficult decisions about life-sustaining interventions like ventilators or feeding tubes?

Tap a prompt to share your answer — we'll use it plus this page's context to start a tailored conversation.

References (14)

1
Acute Bowel Ischemia in a Premature Neonate with Miller-Dieker Syndrome and Anomalous Right Coronary Artery From the Pulmonary Artery.
Cera AJ, Mokha S, Sunderji S, et al.
Pediatric annals 2023; (52(8)):e283-e291 doi:10.3928/19382359-20230613-02.
PMID: 37561828
2
Lissencephaly: Update on diagnostics and clinical management.
Koenig M, Dobyns WB, Di Donato N
European journal of paediatric neurology : EJPN : official journal of the European Paediatric Neurology Society 2021; (35()):147-152 doi:10.1016/j.ejpn.2021.09.013.
PMID: 34731701
3
Ring Chromosome 17 Syndrome-A Case Report and Discussion of Diagnostic Methods.
Kim SY, Wohler E, Gutierrez MJ, et al.
American journal of medical genetics. Part A 2025; (197(3)):e63925 doi:10.1002/ajmg.a.63925.
PMID: 39513527
4
Anesthetic Management and Bispectral Index in a Child with Miller-Dieker Syndrome: A Case Report.
Park SJ, Baek J, Chun S, Choi EK
Children (Basel, Switzerland) 2023; (10(4)) doi:10.3390/children10040631.
PMID: 37189880
5
Multi-Omics Approach Reveals Genes and Pathways Affected in Miller-Dieker Syndrome.
Mahendran G, Breger K, McCown PJ, et al.
Molecular neurobiology 2025; (62(4)):5073-5094 doi:10.1007/s12035-024-04532-7.
PMID: 39508990
6
Central-part laryngectomy after laryngotracheal separation to manage pharyngocutaneous fistula: A case report and retrospective analysis of 12 cases.
Ohara K, Katada A, Kumai T, et al.
Auris, nasus, larynx 2023; (50(4)):628-631 doi:10.1016/j.anl.2022.04.011.
PMID: 35568581
7
Management of general anesthesia in a child with Miller-Dieker syndrome: a case report.
Wakiguchi C, Godai K, Mukaihara K, et al.
JA clinical reports 2015; (1(1)):14 doi:10.1186/s40981-015-0017-2.
PMID: 29497646
8
Development levels of pediatric palliative care teams and the extent of palliative care understanding and implementation among pediatric oncologists in China.
Cai S, Guo Q, Wang X, et al.
Pediatric investigation 2021; (5(4)):265-270 doi:10.1002/ped4.12291.
PMID: 34938967
9
Palliative Care for Children with Central Nervous System Malignancies.
Baenziger PH, Moody K
Bioengineering (Basel, Switzerland) 2018; (5(4)) doi:10.3390/bioengineering5040085.
PMID: 30322131
10
Bereaved parents' perspectives of factors influencing decision-making about place of end-of-life care for children with life-limiting, life-threatening conditions: an all-Ireland qualitative study.
Crowe A, McCauley R, Corcoran Y, et al.
BMC palliative care 2025; (24(1)):294 doi:10.1186/s12904-025-01922-z.
PMID: 41286836
11
Addressing Rehabilitation Needs in Pediatric Palliative Care: The Role of Occupational Therapy.
Önal G, Acar S, Ayar G
Physical & occupational therapy in pediatrics 2026; (46(1)):94-114 doi:10.1080/01942638.2025.2555988.
PMID: 40916601
12
Symptoms and Concerns Among Children and Young People with Life-Limiting and Life-Threatening Conditions: A Systematic Review Highlighting Meaningful Health Outcomes.
Namisango E, Bristowe K, Allsop MJ, et al.
The patient 2019; (12(1)):15-55 doi:10.1007/s40271-018-0333-5.
PMID: 30361884
13
What does effective end-of-life care at home for children look like? A qualitative interview study exploring the perspectives of bereaved parents.
Malcolm C, Knighting K
Palliative medicine 2021; (35(8)):1602-1611 doi:10.1177/02692163211023300.
PMID: 34109876
14
The impact of specialized pediatric palliative care on advance care planning and healthcare utilization in children and young adults: a retrospective analysis of medical records of in-hospital deaths.
Kim CH, Lee J, Lee JW, Kim MS
BMC palliative care 2024; (23(1)):127 doi:10.1186/s12904-024-01448-w.
PMID: 38778335

This information about Miller-Dieker syndrome prognosis is for educational purposes. Always consult your child's pediatric neurology or palliative care team for personalized guidance on their care and quality of life.

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