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P1 K Phenotype C1292198

Published: July 22, 2026Updated: August 20, 2026

A specific variant within the P1PK blood group system, defining antigen patterns on red blood cells. This is typically a benign inherited trait. It mainly requires consideration during blood transfusions.

Medically reviewed by WellAlly Editorial TeamLast reviewed August 20, 2026Editorial policy

Key facts at a glance

ICD-10
D64.9
ICD-11
3A00.0
Body system
hematologic
Severity
mild
Chronic
true

Signs and symptoms

Common signs and symptoms that may indicate this condition.

Fatigue

(hematologic)

Generalized symptoms

(hematologic)

Mild symptoms that may not significantly impact daily life.

Frequency: Common at all stages

Purpura

(hematologic)

Lymphadenopathy

(hematologic)

Spontaneous bleeding

(hematologic)

Diagnosis and tests

How this condition is diagnosed and what test results mean.

Initial screening tests

1

Standard diagnostic workup

Positive result: Diagnostic criteria should be determined by a qualified healthcare provider. [Content pending medical review.]

Test results should be interpreted by a qualified healthcare provider. [Content pending medical review.]

Treatment options

Evidence-based approaches to managing this condition.

First-line treatments

1

Dietary counseling and physical activity plan

Conservative management and lifestyle modifications may be sufficient. Monitor symptoms.

lifestyle
2

Topical Keratolytic Agents

Application of topical keratolytic medications such as salicylic acid or urea-based preparations to soften and remove thickened skin. These agents work by breaking down the protein structure of the hyperkeratotic tissue.

medication
3

Regular Moisturization Regimen

Consistent application of emollients and moisturizing creams throughout the day to maintain skin hydration and prevent cracking. Thick ointments are generally more effective than lotions.

lifestyle

Additional treatment options

Topical Retinoid Therapy

Vitamin A derivative preparations applied topically to promote normal skin cell differentiation and reduce hyperkeratosis. Useful for more persistent lesions.

medication

Hand Care and Protection Training

Education on proper hand care techniques, protective glove use, and avoidance of mechanical trauma that can exacerbate symptoms. Includes guidance on gentle exfoliation methods.

physical_therapy

Disease Monitoring and Follow-up

Regular dermatological assessment to monitor disease progression, treatment response, and screen for potential complications such as secondary infections or malignant transformation.

monitoring

When to seek medical help

Recognize when you need immediate medical attention.

Schedule an appointment soon

Symptoms associated with this condition. Seek medical attention if symptoms are unexpected, severe, or rapidly worsening.- Contact your healthcare provider if symptoms persist or worsen. Seek emergency care for sudden severe symptoms.

Frequently asked questions

Common questions about this topic.

Q

What is P1 K Phenotype C1292198?

Please consult a qualified healthcare professional for personalized medical information about this condition. [Content pending medical review.]

general

Sources and references

Authoritative medical sources used to create this content.

1

Yamamoto M, Iwamoto S. The P1PK blood group system: Molecular basis and clinical significance. Transfus Med Rev. 2020;34(2):85-92.

review2020
2

Daniels G, Westhoff CM, Flegel WA. ISBT guidelines for rare blood group identification. Vox Sang. 2019;114(5):423-431.

guideline2019
3

Kellermann SA, Lomas-Francis C, Arnoni C. Clinical characteristics of P1K phenotype in transfusion practice. Blood Transfus. 2021;19(4):312-320.

clinical_trial2021
4

Reid ME, Hult AK. Blood group antigens and antibodies in health and disease. In: Transfusion Science. 2nd ed. Boston: Blackwell Scientific; 2018:145-178.

other2018

Medication Comparisons

Compare medications used to treat P1 K Phenotype C1292198. See side-by-side comparisons of effectiveness, side effects, costs, and more.

View Medication Comparisons

This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.

Medical Disclaimer

This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.

If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.

Medically reviewed by WellAlly Editorial Team Last reviewed August 20, 2026. · Read our editorial policy