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Living with Thrombocytopenia 6

A rare genetic condition with low platelets and easy bleeding, plus scarring in the bone marrow and an enlarged spleen.

Understanding Thrombocytopenia 6

Thrombocytopenia 6 is a rare genetic condition with low platelets and a higher tendency to bleed.

It also involves scarring of the bone marrow (myelofibrosis) and an enlarged spleen. Bleeding can show up as nosebleeds, heavy periods, and small red or purple skin dots. Some people have mild bone differences and facial features such as a large forehead, wide-set eyes, and deep-set eyes. It starts in the newborn period.

Signs & symptoms

GARD lists few specific symptoms for this condition, so these come from the summary:

  • Low platelet count (thrombocytopenia)
  • Nosebleeds
  • Heavy menstrual periods
  • Small red or purple skin dots (petechiae)
  • Enlarged spleen
  • Thin bones (osteoporosis)

Not everyone has every symptom. GARD's list comes from the Human Phenotype Ontology.

Diagnosis

  1. Talk with your doctor

    Share the symptoms you've noticed, when they started and your family health history. Notes and photos can help.

  2. See a specialist

    Specialists who may be involved include blood and bone marrow specialists, cancer specialists and genetic specialists.

  3. Consider genetic testing

    Changes in SRC are linked to this condition. Genetic testing and counseling can help confirm a diagnosis and explain what it means for your family.

Care & treatment

Care team
Blood and bone marrow specialists (hematologists); Cancer specialists (oncologists); Genetic specialists (geneticists)
Expert care
Ask about multidisciplinary care centers for rare conditions
Treatment
GARD doesn't list specific treatments for this condition. Your care team will tailor care to your symptoms.
Research
Clinical trials and observational studies may be options. See the research section below.

General information, not medical advice. Your care team makes the decisions.

Everyday life

Living with a rare condition is easier with support.

  • Connect with Blood Cancer United and other patient organizations
  • Keep notes on symptoms, changes and questions for appointments
  • Ask about patient registries that help research
  • Look into financial aid and travel resources for care visits
Bring these questions to your next doctor visit
Can genetic testing of the SRC gene confirm this diagnosis?
How should the bone marrow and spleen be monitored?
What should we do about nosebleeds or heavy periods?

Quick facts

Symptoms usually startNewborn
InheritanceAutosomal Dominant
GenesSRC

This condition is caused by changes in the SRC gene. It is autosomal dominant, which means one changed copy of the gene can be enough to cause it.

GeneticBlood

Also known as: hereditary thrombocytopenia with early-onset myelofibrosis; thc6; thrombocytopenia type 6; thrombocytopenia, autosomal dominant, 6

Patient organizations

Source: NIH GARD · Thrombocytopenia 6GARD ID 17870 · GARD page updated September 2026 · Plain-language summary by Know Rare; editorial review pending. General information, not medical advice.

You are more than your diagnosis

Perspectives from people navigating life with Thrombocytopenia 6.

Explore the Thrombocytopenia 6 blog

Explore research for Thrombocytopenia 6

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HealthSpark

Find actively recruiting studies for Thrombocytopenia 6 with HealthSpark. Share your city to explore research near you.

  • Recruiting studies from ClinicalTrials.gov
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  • Eligibility is confirmed by the study team

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Powered by HealthSpark, our AI chat helper · Study information from ClinicalTrials.gov · Eligibility is confirmed by the study team.

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