|
Secondary Neoplasm
|
0.100 |
Biomarker
|
group |
BEFREE |
Although radioiodine labeled 4-hydroxyphenylcysteamine, which we previously developed, has good affinity for tyrosinase, an enzyme in the melanin metabolic pathway, image contrast of the melanoma:organ ratios is not sufficiently high for detection of primary melanoma and metastases at early injection times.
|
29413752 |
2018 |
|
Secondary Neoplasm
|
0.100 |
Biomarker
|
group |
BEFREE |
Blood samples from 68 patients were collected at the time of initial treatment of metastases. mRNA expression of tyrosinase and MelanA/MART1 as a surrogate marker for the presence of CTC was analyzed by real-time RT-PCR and compared with patient characteristics.
|
21625180 |
2011 |
|
Secondary Neoplasm
|
0.100 |
Biomarker
|
group |
BEFREE |
In 321 patients we obtained data on SLN microanatomic location/tumor burden (only 7 cases had metastases <0.1 mm); in 137 we additionally analyzed 24-hour collected LY after CLND (multimarker reverse transcriptase-polymerase chain reaction [MM-RT-PCR] with primers for tyrosinase, MART1 (MelanA), and uMAGE mRNA (27.7% positive samples)].Median follow-up time was 41 months.
|
20607422 |
2010 |
|
Secondary Neoplasm
|
0.100 |
Biomarker
|
group |
BEFREE |
The presence of tyrosinase or MelanA/MART1 transcripts is an independent prognostic factor in patients with high-risk primary uveal melanoma for subsequent development of metastases and for survival and can be used to select patients for adjuvant treatment studies.
|
17317826 |
2007 |
|
Secondary Neoplasm
|
0.100 |
AlteredExpression
|
group |
BEFREE |
Melanoma patients with small micrometastases (<0.5 mm deep, <1 mm in diameter) and a low level of tyrosinase mRNA had less chances for hematogenous metastases via lymph nodes.
|
17204098 |
2007 |
|
Secondary Neoplasm
|
0.100 |
AlteredExpression
|
group |
BEFREE |
We evaluated the role of a single-marker RT-PCR assay for tyrosinase mRNA in the detection of melanoma sentinel lymph node (SLN) metastases and correlated the results with long-term clinical outcome.
|
15459222 |
2004 |
|
Secondary Neoplasm
|
0.100 |
Biomarker
|
group |
BEFREE |
Specificity of tyrosinase and HMB45 PCR in the detection of melanoma metastases in sentinel lymph node biopsies.
|
12460203 |
2002 |
|
Secondary Neoplasm
|
0.100 |
GeneticVariation
|
group |
BEFREE |
Thus, in logistic regression models that included age, but not advanced stage and high grade histology, TYR A1A2 was significantly associated with reduced risk of metastases (P = 0.033, OR 0.41).
|
11532853 |
2001 |
|
Secondary Neoplasm
|
0.100 |
Biomarker
|
group |
BEFREE |
Nevertheless, tyrosinase positivity in bone marrow in earlier tumor stages might indicate increased risk for the development of distant metastases.
|
10971051 |
2000 |
|
Secondary Neoplasm
|
0.100 |
AlteredExpression
|
group |
BEFREE |
The detection of tyrosinase mRNA in melanoma SLN specimens by reverse transcription-polymerase chain reaction (RT-PCR) has been reported to be a more sensitive method to detect subclinical metastases, compared with histological analysis.
|
10340881 |
1999 |
|
Secondary Neoplasm
|
0.100 |
AlteredExpression
|
group |
BEFREE |
The presence of tyrosinase mRNA was analysed in blood and in bone marrow samples from 20 melanoma patients with widespread clinical metastases.
|
10354071 |
1999 |
|
Secondary Neoplasm
|
0.100 |
AlteredExpression
|
group |
BEFREE |
Determination of blood tyrosinase mRNA by RT-PCR and markers of tyrosinase activity (L-DOPA/L-tyrosine ratio) by HPLC have been proposed as biological tools for the detection of metastases in melanoma patients.
|
10340438 |
1999 |
|
Secondary Neoplasm
|
0.100 |
Biomarker
|
group |
BEFREE |
The other half was submitted for molecular detection of submicroscopic metastases using a reverse transcriptase-polymerase chain reaction (RT-PCR) assay for tyrosinase messenger RNA as a marker for the presence of melanoma cells.Patient follow-up averaged 28 months.
|
9801000 |
1998 |
|
Secondary Neoplasm
|
0.100 |
Biomarker
|
group |
BEFREE |
Expression of an extended panel of cytokine genes was investigated by reverse polymerase chain reaction (PCR) in 10 freshly excised melanoma metastases infiltrated by lymphocytes (TIL). cDNA encoding for CD3-delta and tyrosinase could be amplified in all samples, confirming the presence of T lymphocytes and melanoma cells.
|
8181865 |
1994 |
|
Secondary Neoplasm
|
0.100 |
Biomarker
|
group |
BEFREE |
Tyrosinase transcripts were found in all 29 patients with distant metastases (stage III).
|
8245518 |
1993 |