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Clinical Genetics

Building Your Child's Team: Specialists and Baseline Care

At a Glance

Managing Jacobsen syndrome requires a multisystem care team at a pediatric academic center, typically including a geneticist, hematologist, and cardiologist. Essential baseline testing upon diagnosis should include an echocardiogram, complete blood count, immune panel, renal ultrasound, and a sleep study.

Building a comprehensive care team is one of the most impactful steps you can take for your child’s health and development. Because Jacobsen syndrome is a multisystem condition, it requires a “village” of specialists working in harmony [1]. For most families, this care is best managed at a major pediatric academic center, where subspecialists are more likely to have experience with rare genetic conditions [2].

Your Care Team Roadmap

A complete care team for Jacobsen syndrome typically includes the following specialists:

  • Clinical Geneticist: To oversee the diagnosis and explain the specific genes missing in your child’s 11q deletion [3].
  • Hematologist: Specifically to manage Paris-Trousseau syndrome, the platelet and bleeding disorder common in this syndrome [4].
  • Cardiologist: To screen for and manage structural heart defects like hypoplastic left heart syndrome or Shone’s complex [5][6].
  • Immunologist: To monitor for combined immunodeficiency and manage recurrent infections [7][8].
  • Gastroenterologist / Nutritionist: To address feeding challenges, reflux, and severe constipation [2][9].
  • Developmental Pediatrician: To coordinate early intervention, therapies, and manage neurodevelopmental concerns like ADHD or autism [5][2].
  • ENT and Sleep Specialist: To monitor for hearing loss and conduct sleep studies for obstructive sleep apnea [10][11].
  • Neurosurgery: Only if needed to evaluate or treat trigonocephaly (skull fusion) [12].

Immediate Baseline Checklist

Following a diagnosis, several “baseline” tests are essential to understand your child’s current health status. It is ideal to complete these tests within the first few weeks or months after diagnosis:

  1. Complete Blood Count (CBC) and Platelet Function: To check not just the number of platelets, but how well they work [4][1].
  2. Echocardiogram: A detailed ultrasound of the heart to look for structural defects [2][6].
  3. Immune Panel: Blood tests (like flow cytometry) to check T-cell and B-cell levels [7][8].
  4. Renal Ultrasound: To screen for kidney anomalies, such as hypoplastic or duplicated kidneys [13].
  5. Audiology (Hearing) Test: To establish a baseline for hearing and check for middle ear fluid [10].
  6. Polysomnography (Sleep Study): To screen for obstructive sleep apnea, even if the child does not seem to snore [11].

Evaluating Collaborative Expertise

When meeting a new specialist, it is important to build a team that is willing to learn and collaborate. Excellent non-genetics specialists may not have specific rare genes memorized, which is completely normal. Consider asking these collaborative vetting questions:

  • “Are you familiar with the specific cardiac/bleeding/immune complications associated with Jacobsen syndrome, or are you open to reviewing the literature and collaborating with our geneticist?” [4][5].
  • “Since this syndrome is so rare, are you comfortable consulting with specialized Jacobsen centers regarding my child’s care if complex issues arise?”
  • “How does your department handle pre-surgical planning for a child with a known bleeding disorder like Paris-Trousseau?” [4].

Ongoing Monitoring and Balance

Management is a marathon, not a sprint. Your team will likely recommend ongoing rehabilitative monitoring, including physical, occupational, and speech therapy [14][2].

While keeping up with specialist appointments and baseline checklists is crucial, it is equally important to balance proactive medical care with letting your child experience a normal childhood. While you must be vigilant about head injuries due to the bleeding risk, you do not have to treat your child like they are made of glass. With the right safety plans and team in place, you can empower your child to safely explore, play, and grow [1][2].

Common questions in this guide

What specialists do I need for a child with Jacobsen syndrome?
A comprehensive care team should include a clinical geneticist, hematologist, cardiologist, immunologist, gastroenterologist, developmental pediatrician, and an ENT specialist. Because it is a multisystem condition, managing care at a major pediatric academic center is highly recommended.
What baseline tests should be done after a Jacobsen syndrome diagnosis?
Within the first few months of diagnosis, your child should have a complete blood count to check platelet function, an echocardiogram to check for structural heart defects, and an immune panel. They will also need a renal ultrasound, a baseline hearing test, and a sleep study.
Why does a child with Jacobsen syndrome need to see a hematologist?
A hematologist is essential to manage Paris-Trousseau syndrome, a platelet and bleeding disorder that is common in children with Jacobsen syndrome. They will help monitor how well your child's platelets work and handle surgical planning to minimize bleeding risks.
Does my child need a sleep study even if they don't snore?
Yes, a polysomnography (sleep study) is an essential baseline test to screen for obstructive sleep apnea. Children with Jacobsen syndrome can have obstructive sleep apnea even if they do not exhibit typical signs like snoring.
How do I know if a specialist is a good fit for my child's rare disease team?
Look for specialists who are willing to collaborate with your geneticist and consult specialized rare disease centers. It is normal if they don't have all the specific genes memorized, but they must be proactive, communicative, and willing to review the medical literature regarding your child's condition.

Questions to Ask Your Doctor

Curated prompts to bring to your next appointment.

  1. 1.How does your team coordinate care between different subspecialties, especially before a surgical procedure?
  2. 2.Who is the lead physician on my child's team who will help synthesize all the information from different specialists?
  3. 3.Are you comfortable consulting with specialized rare disease centers regarding my child's care if complex issues arise?
  4. 4.What is the timeline for completing all the baseline screening tests, like the sleep study and immune panel?
  5. 5.Does this facility have a dedicated care coordinator for children with complex, rare genetic syndromes?

Questions For You

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

References

References (14)
  1. 1

    Jacobsen syndrome and neonatal bleeding: report on two unrelated patients.

    Serra G, Memo L, Antona V, et al.

    Italian journal of pediatrics 2021; (47(1)):147 doi:10.1186/s13052-021-01108-2.

    PMID: 34210338
  2. 2

    Jacobsen syndrome associated with Shone's complex: a case report.

    Brum A, Laskoski LV, Matos FGOA, d'Arce LPG

    Revista paulista de pediatria : orgao oficial da Sociedade de Pediatria de Sao Paulo 2025; (43()):e2024136 doi:10.1590/1984-0462/2025/43/2024136.

    PMID: 39841699
  3. 3

    Jacobsen syndrome: Advances in our knowledge of phenotype and genotype.

    Favier R, Akshoomoff N, Mattson S, Grossfeld P

    American journal of medical genetics. Part C, Seminars in medical genetics 2015; (169(3)):239-50 doi:10.1002/ajmg.c.31448.

    PMID: 26285164
  4. 4

    Recurrent Spontaneous Intracranial Hemorrhage in a Patient With Jacobsen Syndrome.

    Suryadevara N, Ahmed R, El-Dokla A

    Neurology. Clinical practice 2021; (11(4)):e598-e599 doi:10.1212/CPJ.0000000000000963.

    PMID: 34484972
  5. 5

    Partial Jacobsen syndrome phenotype in a patient with a de novo frameshift mutation in the ETS1 transcription factor.

    Tootleman E, Malamut B, Akshoomoff N, et al.

    Cold Spring Harbor molecular case studies 2019; (5(3)) doi:10.1101/mcs.a004010.

    PMID: 31160359
  6. 6

    Jacobsen Syndrome with Hypoplastic Left Heart Syndrome: Outcome after Cardiac Transplantation.

    Ferrigno F, Franceschini A, Kirk R, Amodeo A

    Journal of cardiovascular development and disease 2022; (10(1)) doi:10.3390/jcdd10010008.

    PMID: 36661903
  7. 7

    11q terminal deletion and combined immunodeficiency (Jacobsen syndrome): Case report and literature review on immunodeficiency in Jacobsen syndrome.

    Blazina Š, Ihan A, Lovrečić L, Hovnik T

    American journal of medical genetics. Part A 2016; (170(12)):3237-3240 doi:10.1002/ajmg.a.37859.

    PMID: 27605496
  8. 8

    The 11q Terminal Deletion Disorder Jacobsen Syndrome is a Syndromic Primary Immunodeficiency.

    Dalm VA, Driessen GJ, Barendregt BH, et al.

    Journal of clinical immunology 2015; (35(8)):761-8 doi:10.1007/s10875-015-0211-z.

    PMID: 26566921
  9. 9

    Scurvy Findings in a Child with Jacobsen Syndrome: A Case Report.

    Puddy AC, Hughes JL, Joffe AL, et al.

    JBJS case connector 2019; (9(3)):e0352 doi:10.2106/JBJS.CC.18.00352.

    PMID: 31584905
  10. 10

    Mice Haploinsufficient for Ets1 and Fli1 Display Middle Ear Abnormalities and Model Aspects of Jacobsen Syndrome.

    Carpinelli MR, Kruse EA, Arhatari BD, et al.

    The American journal of pathology 2015; (185(7)):1867-76.

    PMID: 26093983
  11. 11

    Obstructive Sleep Apnea in Jacobsen Syndrome.

    Tubbs AS, Combs D, Grandner MA, Parthasarathy S

    Sleep and vigilance 2019; (3(1)):77-79 doi:10.1007/s41782-019-00060-w.

    PMID: 34296059
  12. 12

    Trigonocephaly: Quantitative Comparison of the Complete Vault Reconstruction and Minimally Invasive Suturectomy.

    Masoudi MS, Yousefi S, Yousefi O, et al.

    World neurosurgery 2022; (166()):e77-e83 doi:10.1016/j.wneu.2022.06.093.

    PMID: 35772706
  13. 13

    Gene-targeted deletion in mice of the Ets-1 transcription factor, a candidate gene in the Jacobsen syndrome kidney "critical region," causes abnormal kidney development.

    Ye M, Xu L, Fu M, et al.

    American journal of medical genetics. Part A 2019; (179(1)):71-77 doi:10.1002/ajmg.a.40481.

    PMID: 30422383
  14. 14

    Loss of FEZ1, a gene deleted in Jacobsen syndrome, causes locomotion defects and early mortality by impairing motor neuron development.

    Gunaseelan S, Wang Z, Tong VKJ, et al.

    Human molecular genetics 2021; (30(1)):5-20 doi:10.1093/hmg/ddaa281.

    PMID: 33395696

This page is for informational purposes only and does not replace professional medical advice. Always consult your child's pediatrician or clinical geneticist to establish a specific care plan and baseline testing schedule.

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