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Myeloid lineage-associated markers: Difference between revisions

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'''Table: Marker patterns that allow definite assignment of acute myeloid lineage'''
''These markers can be used to identify myeloid lineage. They allow the diagnosis of AML if there are no lineage-defining markers of B-lineage or T-lineage. Alternatively, if lineage-defining markers of B-lineage or T-lineage are present then consider a diagnosis of MPAL''</br></br>
 
 
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{| class="wikitable" style="border-style: solid; border-width: 5px; color:black"
{| class="wikitable" style="border-style: solid; border-width: 5px; color:black"
|colspan="2" style = "font-size:90%; color:black; background:lightgrey" |'''Pattern 2''':</br>At least '''two myeloid lineage-associated''' markers are present '''and''' there are no lineage defining markers of T or B cells '''and''' no more than one T-cell '''or''' B-cell lineage-associated marker is  present
|colspan="2" style = "font-size:90%; color:black; background:lightgrey" |'''Assignment of myeloid lineage: Lineage-associated markers'''
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|colspan="2" style = "font-size:90%; color:black; background:#ddeee1"|
|colspan="2" style = "font-size:90%; color:black; background:#ddeee1"|Myeloid lineage assignment using these markers requires that at least two myeloid lineage-associated markers are present
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|colspan="1" style = "font-size:90%; color:black;" |'''[[CD117]]'''
|colspan="1" style = "font-size:90%; color:black;" |'''[[CD117]]'''

Latest revision as of 19:57, 5 January 2024



These markers can be used to identify myeloid lineage. They allow the diagnosis of AML if there are no lineage-defining markers of B-lineage or T-lineage. Alternatively, if lineage-defining markers of B-lineage or T-lineage are present then consider a diagnosis of MPAL

Assignment of myeloid lineage: Lineage-associated markers
Myeloid lineage assignment using these markers requires that at least two myeloid lineage-associated markers are present
CD117 An early marker of myeloid lineage, seen in up to 80% of AML and vauable in recognising more primitive differentaiion forms (note that aberrant expression is seen in up to 20% of ALL cases)
CD33 A good marker for AML, particularly for those cases with granulocytic maturation, CD33 is often less strongly expressed in AML with monocytic dfferentiation and strongly expressed in APL.
CD13 A good lineage marker for AML that is acquired a little later in differentation than CD117 or CD33; expression of CD13 is often higher than CD33 in AML with monocytic differentiation.