Short answer · Medically reviewed summary · Last updated: 2026-05-08
Monosomy 9p, also known as 9p deletion syndrome, is a rare chromosomal disorder caused by the loss of genetic material from the short arm of chromosome 9. Because medical literature has evolved over decades, it is frequently referenced under various clinical labels, including Alfi syndrome, which is the most common historical synonym for this condition. What are the common synonyms for Monosomy 9p? In medical records and scientific literature, Monosomy 9p is primarily referred to by its cytogenetic description, 9p- syndrome.
Monosomy 9p synonyms
Other names for Monosomy 9p: synonyms, acronyms and related terms used by doctors and patients.
Monosomy 9p, also known as 9p deletion syndrome, is a rare chromosomal disorder caused by the loss of genetic material from the short arm of chromosome 9. Because medical literature has evolved over decades, it is frequently referenced under various clinical labels, including Alfi syndrome, which is the most common historical synonym for this condition.
What are the common synonyms for Monosomy 9p?
In medical records and scientific literature, Monosomy 9p is primarily referred to by its cytogenetic description, 9p- syndrome. Historically, it was often called Alfi syndrome, named after the physician who first described its clinical features. Other terms you may encounter in older clinical reports or international databases include:
- 9p partial monosomy
- Deletion 9p syndrome
- Partial monosomy 9p
- Chromosome 9p deletion syndrome
Why does Monosomy 9p have multiple names?
The variety of names for Monosomy 9p stems from the evolution of genetic technology. Early researchers often assigned eponymous names (like Alfi syndrome) to newly identified conditions. As high-resolution karyotyping and microarray technologies improved, medical professionals shifted toward naming the condition based on the specific chromosomal location affected, leading to the current preference for Monosomy 9p or 9p deletion syndrome in clinical practice.
How is this condition classified in medical databases?
To ensure accuracy in clinical settings, medical professionals rely on standardized classification systems that track Monosomy 9p. These systems help clinicians provide consistent care and facilitate research across global health platforms:
- OMIM (Online Mendelian Inheritance in Man): Listed under #158140.
- Orphanet: Classified under ORPHA:1395, which tracks the prevalence and clinical management of the condition.
- ICD-10/11: Often coded under general chromosomal abnormality classifications (e.g., Q93.5), reflecting the deletion of the 9p segment.
Next steps
- Consult with a clinical geneticist to review your specific chromosomal report.
- Connect with the Monosomy 9p community at DiseaseMaps.org to share experiences with others.
- Request a referral to a multidisciplinary team, including developmental pediatricians and neurologists, to manage the symptoms of Monosomy 9p.
Medical disclaimer: This information is for educational purposes only and should not replace professional medical advice, diagnosis, or treatment.
