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Bleeding disorder, platelet-type, 21(BDPLT21)

MedGen UID:
1386863
Concept ID:
C4479515
Disease or Syndrome
Synonym: BDPLT21
 
Gene (location): FLI1 (11q24.3)
 
Monarch Initiative: MONDO:0054577
OMIM®: 617443

Definition

BDPLT21 is a hematologic disorder characterized by increased risk of bleeding resulting from a functional platelet defect. Platelets have decreased or even absent dense bodies and abnormally enlarged and fused alpha-granules, and they show defective secretion and aggregation responses to agonists. Platelets are usually enlarged, and some patients may have mild to moderate thrombocytopenia (summary by Saultier et al., 2017). [from OMIM]

Clinical features

From HPO
Menorrhagia
MedGen UID:
44358
Concept ID:
C0025323
Pathologic Function
Prolonged and excessive menses at regular intervals in excess of 80 mL or lasting longer than 7 days.
Thrombocytopenia
MedGen UID:
52737
Concept ID:
C0040034
Disease or Syndrome
A reduction in the number of circulating thrombocytes.
Increased mean platelet volume
MedGen UID:
853131
Concept ID:
C1096367
Finding
Average platelet volume above the upper limit of the normal reference interval.
Abnormal bleeding
MedGen UID:
264316
Concept ID:
C1458140
Pathologic Function
An abnormal susceptibility to bleeding, often referred to as a bleeding diathesis. A bleeding diathesis may be related to vascular, platelet and coagulation defects.
Impaired platelet aggregation
MedGen UID:
383786
Concept ID:
C1855853
Finding
An impairment in the rate and degree to which platelets aggregate after the addition of an agonist that stimulates platelet clumping. Platelet aggregation is measured using aggregometer to measure the optical density of platelet-rich plasma, whereby platelet aggregation causes the plasma to become more transparent.
Impaired ADP-induced platelet aggregation
MedGen UID:
870824
Concept ID:
C4025282
Finding
Abnormal platelet response to ADP as manifested by reduced or lacking aggregation of platelets upon addition of ADP.
Eczematoid dermatitis
MedGen UID:
3968
Concept ID:
C0013595
Disease or Syndrome
Eczema is a form of dermatitis that is characterized by scaly, pruritic, erythematous lesions located on flexural surfaces.
Psoriasiform dermatitis
MedGen UID:
75508
Concept ID:
C0262985
Disease or Syndrome
A skin abnormality characterized by redness and irritation, with thick, red skin that displays flaky, silver-white patches (scales).
Recurrent viral infections
MedGen UID:
332357
Concept ID:
C1837066
Finding
Increased susceptibility to viral infections, as manifested by recurrent episodes of viral infection.
Alopecia
MedGen UID:
7982
Concept ID:
C0002170
Finding
A noncongenital process of hair loss, which may progress to partial or complete baldness.

Recent clinical studies

Diagnosis

Canault M, Alessi MC
Int J Mol Sci 2020 Feb 6;21(3) doi: 10.3390/ijms21031075. PMID: 32041177Free PMC Article

Clinical prediction guides

Lavenu-Bombled C, Guitton C, Dupuis A, Baas MJ, Desconclois C, Dreyfus M, Li R, Caron C, Gachet C, Fressinaud E, Lanza F
Thromb Haemost 2016 Nov 30;116(6):1070-1078. Epub 2016 Sep 29 doi: 10.1160/TH16-06-0438. PMID: 27683759

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