BCR-ABL1 p210 Major Molecular Response (MMR) [Presence] in Blood or Tissue by Molecular genetics method --post treatment 74041-5
LOINC Code
| LOINC code | 74041-5 | ||
|---|---|---|---|
| name | BCR-ABL1 p210 Major Molecular Response (MMR) [Presence] in Blood or Tissue by Molecular genetics method --post treatment | ||
| description | Patient's with CML and undergoing tyrosine kinase inhibitor (TKI) therapy may be monitored to assess their treatment response (reduction in BCR-ABL1 transcripts) to therapy. A major molecular response (MMR) occurs when the ratio of BCR-ABL1 transcripts to control gene is less than or equal to 0.1% according to the International Scale (IS), a consensus standardized measurement scale intended to allow direct comparison of BCR-ABL1 major breakpoint (b2a2, b3a2) RNA levels in any laboratory adopting its use. Studies have demonstrated that achieving MMR within 18 months following TKI therapy is associated with a minimal risk of progression at 84 months (NCCN Guidelines CML, 2013). | ||
| status | ACTIVE | ||
Fully-Specified Name | |||
| component | t(9;22)(q34.1;q11)(ABL1,BCR) b2a2+b3a2 fusion transcript/control transcript.reduction to 0.1%^post treatment | ||
| property | PrThr = Present or threshold: The Property PrThr stands for “Presence or Threshold”, meaning either a) the actual presence or absence of an analyte, or b) that the amount of analyte detected is over some predetermined threshold. | ||
| time | Pt = Point in time: To identify measures at a point in time. This is a synonym for “spot” or “random” as applied to urine measurements. | ||
| system | Bld/Tiss Bld = Whole blood Tiss = Tissue, unspecified | ||
| scale | Ord = Ordinal: Ordered categorical responses, e.g., 1+, 2+, 3+; positive, negative; reactive, indeterminate, nonreactive. | ||
| method | Molgen = Molecular Genetics: General class of methods used to detect genetic attributes on a molecular basis including RFL, PCR and other methods. | ||
Additional Names | |||
| short name | t(ABL1,BCR)p210/cntrl.0.1% p Tx Bld/T Ql | ||
Basic Attributes | |||
| class | MOLPATH | ||
| type | 1 Laboratory | ||
| order vs. observation | Both | ||
Associated Observations | |||
LOINC codes that represent optional associated observation(s) for a clinical observation or laboratory test. A LOINC term may represent a single associated observation or panel containing several associated observations. | |||
History/Usage | |||
| first released | |||
| last updated | 2.56 | ||
| last change type | MIN - change to field other than name | ||
| change reason | The PrThr property is used for LOINC terms whose results are reported using an ordered categorical scale, regardless of whether or not an internal threshold was used to make that determination. This change was approved by the Laboratory LOINC Committee in June 2016. | ||
Related Names | |||
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