CPT Codes

BRAF NGS - 81210
Colorectal Cancer Mutation Panel - 81445
EGFR Gene Mutation Detection - 81235
IDH1 Mutation Detection - 81120
IDH2 Mutation Detection - 81121
KRAS NGS - 81275
Lung Cancer Mutation Panel - 81479
Thyroid Cancer Mutation Panel - 81445

Synonyms

  • B-RAF: Proto-OncogeneColorectal Cancer Mutation Panel: AmpliSeq Cancer Hot Spot Panel
  • Next Generation Sequencing, Colorectal Cancer Panel NGSEGFR Gene Mutation Detection: Epidermal Growth Factor ReceptorIDH1 Mutation Detection: Glioblastoma
  • Glioma
  • Isocitrate Dehydrogenase 1IDH2 Mutation Detection: Glioblastoma
  • Glioma
  • Isocitrate Dehydrogenase 2KRAS NGS: KRAS Proto-Oncogene, GTPaseLung Cancer Mutation Panel: AmpliSeq Cancer Hot Spot Panel
  • Next Generation Sequencing, Lung Cancer Panel NGSMicrosatellite Instability: Mismatch Repair Defect
  • MSIThyroid Cancer Mutation Panel: AmpliSeq Cancer Hot Spot Panel
  • Next Generation Sequencing, Thyroid Cancer Panel NGS

Test Includes

BRAF NGS - This is part of the Ion AmpliSeq Cancer Hot Spot Panel; the most common BRAF mutation is the V600E change in exon 15
Colorectal Cancer Mutation Panel - This assay utilizes Ion Torrent high throughput targeted sequencing technology to test for a panel of actionable oncogenic variants in five colorectal cancer-related genes (BRAF, KRAS, NRAS, PIK3CA, AKT1)
EGFR Gene Mutation Detection - EGFR can be tested by Ion Ampliseq Cancer Hot spot panel or Idylla EGFR Mutation Assay
IDH1 Mutation Detection - Identification of codon 132 mutations only in the IDH1 gene
IDH2 Mutation Detection - Identification of codon 172 mutations only in the IDH2 gene
KRAS NGS - This is part of the Ion AmpliSeq Cancer Hot Spot Panel
Lung Cancer Mutation Panel - This assay utilizes Ion Torrent high throughput targeted sequencing technology to test for a panel of actionable oncogenic variants in six lung cancer-related genes (EGFR, KRAS, BRAF, NRAS, PIK3CA, ERBB2)
Thyroid Cancer Mutation Panel - This assay utilizes Ion Torrent high throughput targeted sequencing technology to test for a panel of actionable oncogenic variants in ten thyroid cancer-related genes (BRAF, HRAS, KRAS, NRAS, AKT1, CTNNB1, PTEN, TP53, RET, and PIK3CA)

Performing Laboratory / Facility

UCLA Medical Center Clinical Laboratory (CHS)

Performing Section

Molecular Pathology

Availability

Monday through Friday, 0700-1700

Turnaround Time

14 days from receipt of specimen in performing lab

Methodology

BRAF NGS - For all solid tumor test by NGS: Ampliseq assay utilizes Ion Torrent high throughput targeted sequencing technology to test for a panel of actionable oncogenic variants

EGFR Gene Mutation Detection - Idylla Assay is a fully automated real- time PCR assay using a cartridge -based design for the detection of 51 somatic mutations in exon 18-21 of the human EGFR oncogene

Use

EGFR Gene Mutation Detection - A subset of NSCLC patients have point mutations, deletions, and insertions in the EGFR gene which allow them to respond to certain treatments (anti-EGFR tyrosine kinase inhibitors such as Erlotinib), resulting in a more favorable prognosis. However, other mutations (predominantly T790M) in the EGFR gene can result in resistance to anti-EGFR therapy. Thus, this test may be used, in conjunction with clinical and other laboratory findings, as an aid in selection of drug therapy

Limitations

BRAF NGS - This test has been validated by the UCLA Molecular Diagnostics Laboratories. The assay can detect approximately 5% to 10% of mutant in a background of wild-type genomic DNA. Preparation of DNA from tissue samples is dependent on the quality of the specimen provided. A negative (no mutation detected) result does not preclude the presence of such a mutation since results depend on, among other factors, mutant allele frequency, specimen integrity, absence of inhibitors and/or interfering polymorphisms, and availability of sufficient DNA for detection. Only variants that are known to be present in the Catalogue of Somatic Mutations in Cancer (COSMIC) database will be reported. Variants not included in the five targeted genes listed above will not be reported.

Specimen Type

Formalin-fixed paraffin-embedded (FFPE) slides

Container

Unstained slides

Volume

10 unstained slides from paraffin block in 5 µm (5-micrometer) sections or formalin-fixed paraffin-embedded tissue block containing >=20% tumor. Either option needs to be accompanied by an H&E reference slide. Microsatellite Instability (MSI) requires 10 unstained and 1 H&E slides for the tumor tissue and 10 unstained and 1 H&E from the normal tissue.

Minimum Volume

10 unstained slides Idylla EGFR 5unstained slides

Shipping and Handling Instructions

Transport specimen at room temperature.

Causes for Rejection

Incorrect tissue type, damaged slides, missing H&E slide, tissue quantity not sufficient
Test Information

CPT Codes

BRAF NGS - 81210
Colorectal Cancer Mutation Panel - 81445
EGFR Gene Mutation Detection - 81235
IDH1 Mutation Detection - 81120
IDH2 Mutation Detection - 81121
KRAS NGS - 81275
Lung Cancer Mutation Panel - 81479
Thyroid Cancer Mutation Panel - 81445

Synonyms

  • B-RAF: Proto-OncogeneColorectal Cancer Mutation Panel: AmpliSeq Cancer Hot Spot Panel
  • Next Generation Sequencing, Colorectal Cancer Panel NGSEGFR Gene Mutation Detection: Epidermal Growth Factor ReceptorIDH1 Mutation Detection: Glioblastoma
  • Glioma
  • Isocitrate Dehydrogenase 1IDH2 Mutation Detection: Glioblastoma
  • Glioma
  • Isocitrate Dehydrogenase 2KRAS NGS: KRAS Proto-Oncogene, GTPaseLung Cancer Mutation Panel: AmpliSeq Cancer Hot Spot Panel
  • Next Generation Sequencing, Lung Cancer Panel NGSMicrosatellite Instability: Mismatch Repair Defect
  • MSIThyroid Cancer Mutation Panel: AmpliSeq Cancer Hot Spot Panel
  • Next Generation Sequencing, Thyroid Cancer Panel NGS

Test Includes

BRAF NGS - This is part of the Ion AmpliSeq Cancer Hot Spot Panel; the most common BRAF mutation is the V600E change in exon 15
Colorectal Cancer Mutation Panel - This assay utilizes Ion Torrent high throughput targeted sequencing technology to test for a panel of actionable oncogenic variants in five colorectal cancer-related genes (BRAF, KRAS, NRAS, PIK3CA, AKT1)
EGFR Gene Mutation Detection - EGFR can be tested by Ion Ampliseq Cancer Hot spot panel or Idylla EGFR Mutation Assay
IDH1 Mutation Detection - Identification of codon 132 mutations only in the IDH1 gene
IDH2 Mutation Detection - Identification of codon 172 mutations only in the IDH2 gene
KRAS NGS - This is part of the Ion AmpliSeq Cancer Hot Spot Panel
Lung Cancer Mutation Panel - This assay utilizes Ion Torrent high throughput targeted sequencing technology to test for a panel of actionable oncogenic variants in six lung cancer-related genes (EGFR, KRAS, BRAF, NRAS, PIK3CA, ERBB2)
Thyroid Cancer Mutation Panel - This assay utilizes Ion Torrent high throughput targeted sequencing technology to test for a panel of actionable oncogenic variants in ten thyroid cancer-related genes (BRAF, HRAS, KRAS, NRAS, AKT1, CTNNB1, PTEN, TP53, RET, and PIK3CA)

Performing Laboratory / Facility

UCLA Medical Center Clinical Laboratory (CHS)

Performing Section

Molecular Pathology

Availability

Monday through Friday, 0700-1700

Turnaround Time

14 days from receipt of specimen in performing lab

Methodology

BRAF NGS - For all solid tumor test by NGS: Ampliseq assay utilizes Ion Torrent high throughput targeted sequencing technology to test for a panel of actionable oncogenic variants

EGFR Gene Mutation Detection - Idylla Assay is a fully automated real- time PCR assay using a cartridge -based design for the detection of 51 somatic mutations in exon 18-21 of the human EGFR oncogene

Use

EGFR Gene Mutation Detection - A subset of NSCLC patients have point mutations, deletions, and insertions in the EGFR gene which allow them to respond to certain treatments (anti-EGFR tyrosine kinase inhibitors such as Erlotinib), resulting in a more favorable prognosis. However, other mutations (predominantly T790M) in the EGFR gene can result in resistance to anti-EGFR therapy. Thus, this test may be used, in conjunction with clinical and other laboratory findings, as an aid in selection of drug therapy

Limitations

BRAF NGS - This test has been validated by the UCLA Molecular Diagnostics Laboratories. The assay can detect approximately 5% to 10% of mutant in a background of wild-type genomic DNA. Preparation of DNA from tissue samples is dependent on the quality of the specimen provided. A negative (no mutation detected) result does not preclude the presence of such a mutation since results depend on, among other factors, mutant allele frequency, specimen integrity, absence of inhibitors and/or interfering polymorphisms, and availability of sufficient DNA for detection. Only variants that are known to be present in the Catalogue of Somatic Mutations in Cancer (COSMIC) database will be reported. Variants not included in the five targeted genes listed above will not be reported.
Specimen Collection and Handling

Specimen Type

Formalin-fixed paraffin-embedded (FFPE) slides

Container

Unstained slides

Volume

10 unstained slides from paraffin block in 5 µm (5-micrometer) sections or formalin-fixed paraffin-embedded tissue block containing >=20% tumor. Either option needs to be accompanied by an H&E reference slide. Microsatellite Instability (MSI) requires 10 unstained and 1 H&E slides for the tumor tissue and 10 unstained and 1 H&E from the normal tissue.

Minimum Volume

10 unstained slides Idylla EGFR 5unstained slides

Shipping and Handling Instructions

Transport specimen at room temperature.

Causes for Rejection

Incorrect tissue type, damaged slides, missing H&E slide, tissue quantity not sufficient
Result Interpretation