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Thrombocythaemia v0.9 CALR Arina Puzriakova Mode of inheritance for gene: CALR was changed from Unknown to Other
Thrombocythaemia v0.8 SH2B3 Catherine Snow changed review comment from: Limited evidence of SH2B3 (alson known as LNK) variants associated with Thrombocythaemia. Most reporting on Thrombocythaemia are in adjacent to work on Myeloproliferative neoplasms (MPNs) - these are a heterogenous group of malignant haematological disorder, of which one of the seven diagnostic entities is Essential Thrombocythaemia.
• PMID 20404132 identifies a patient with thrombocythaemia with a somatic variant (E208Q) in SH2B3 when investigating patients with myeloproliferative neoplasms the patient did not have the JAK2 (V617F) variant. Influence of CALR had not been discovered at this time
• PMID: 27237057 Aimed to discover new variants associated with familial forms of MPN's, 26 members from five families sequenced with at least two members affected by MPN. A proband who had primary myelofibrosis phenotype had the E208Q SH2B3 variant and a CALR variant (p.L367fs*46) were identified. The probands daughter had a thrombocythaemia phenotype with the same SH2B3 variant and the JAK2 (V617F) variant. Three additional family members had the SH2B3 variant but no reported associated phenotypes. Although the E208Q SH2B3 variant is germline there is not sufficient evidence that this variant causes a thrombocythaemia phenotype.
• PMID 27716218 also identified variant E208Q in SH2B3 and concluded it as a germline variant. Two unrelated families each had two family members with MPNs and the E208Q in SH2B3 variant. Only 2/4 with MPNs had thrombocythaemia all had the JAK2 (V617F) variant, the authors concluded that it appears unlikely that SH2B3 alterations may act as driver mutations in MPNs.
Therefore rating SH2B3 as Amber as although germline variants have been discovered the Thromobcythaemia phenotype has only been observed when accompanied with additional known somatic variants in JAK2/CALR; to: Limited evidence of SH2B3 (alson known as LNK) variants associated with Thrombocythaemia. Most reporting on Thrombocythaemia are in adjacent to work on Myeloproliferative neoplasms (MPNs) - these are a heterogenous group of malignant haematological disorder, of which one of the seven diagnostic entities is Essential Thrombocythaemia.
• PMID 20404132 identifies a patient with thrombocythaemia with a somatic variant (E208Q) in SH2B3 when investigating patients with myeloproliferative neoplasms the patient did not have the known JAK2 (V617F) somatic variant. The role of CALR had not been discovered at this time
• PMID: 27237057 Aimed to discover new variants associated with familial forms of MPN's, 26 members from five families sequenced with at least two members affected by MPN. A proband who had primary myelofibrosis phenotype had the E208Q SH2B3 variant and a CALR variant (p.L367fs*46) were identified. The probands daughter had a thrombocythaemia phenotype with the same SH2B3 variant and the JAK2 (V617F) variant. Three additional family members had the SH2B3 variant but no reported associated phenotypes. Although the E208Q SH2B3 variant is germline there is not sufficient evidence that this variant causes a thrombocythaemia phenotype.
• PMID 27716218 also identified variant E208Q in SH2B3 and concluded it as a germline variant. Two unrelated families each had two family members with MPNs and the E208Q in SH2B3 variant. Only 2/4 with MPNs had thrombocythaemia all had the JAK2 (V617F) variant, the authors concluded that it appears unlikely that SH2B3 alterations may act as driver mutations in MPNs.
Therefore rating SH2B3 as Amber as although germline variants have been discovered the Thromobcythaemia phenotype has only been observed when accompanied with additional known somatic variants in JAK2/CALR
Thrombocythaemia v0.8 SH2B3 Catherine Snow changed review comment from: Limited evidence of SH2B3 (alson known as LNK) variants associated with Thrombocythaemia. Most reporting on Thrombocythaemia are in adjacent to work on Myeloproliferative neoplasms (MPNs) - these are a heterogenous group of malignant haematological disorder, one of the seven diagnostic entities is Essential Thrombocythaemia.
• PMID: 27237057 Aimed to discover new variants associated with familial forms of MPN's, sequenced 26 members from five families with at least two members affected by MPN. The proband had primary myelofibrosis phenotype a SH2B3 variant and a CALR variant were identified. The probands daughter had a thrombocythaemia phenotype with the same SH2B3 variant and a JAK2V617F variant. Three additional family members had the SH2B3 variant but no reported associated phenotypes. Although the SH2B3 variant is germline there is not sufficient evidence that this variant causes a thrombocythaemia phenotype.
• PMID 20404132 identifies a patient with thrombocythaemia with a somatic variant (E208Q) in SH2B3 again when investigating patients with myeloproliferative neoplasms.
• PMID 27716218 identified a germline variant in SH2B3 in two families affected members had MPNs but not all had thrombocythaemia and concluded that it appears unlikely that SH2B3 alterations may act as driver mutations in MPNs.
Therefore rating SH2B3 as Red as although germline variants have been discovered there is no conclusive association of a thrombocythaemia phenotype with these variants.; to: Limited evidence of SH2B3 (alson known as LNK) variants associated with Thrombocythaemia. Most reporting on Thrombocythaemia are in adjacent to work on Myeloproliferative neoplasms (MPNs) - these are a heterogenous group of malignant haematological disorder, of which one of the seven diagnostic entities is Essential Thrombocythaemia.
• PMID 20404132 identifies a patient with thrombocythaemia with a somatic variant (E208Q) in SH2B3 when investigating patients with myeloproliferative neoplasms the patient did not have the JAK2 (V617F) variant. Influence of CALR had not been discovered at this time
• PMID: 27237057 Aimed to discover new variants associated with familial forms of MPN's, 26 members from five families sequenced with at least two members affected by MPN. A proband who had primary myelofibrosis phenotype had the E208Q SH2B3 variant and a CALR variant (p.L367fs*46) were identified. The probands daughter had a thrombocythaemia phenotype with the same SH2B3 variant and the JAK2 (V617F) variant. Three additional family members had the SH2B3 variant but no reported associated phenotypes. Although the E208Q SH2B3 variant is germline there is not sufficient evidence that this variant causes a thrombocythaemia phenotype.
• PMID 27716218 also identified variant E208Q in SH2B3 and concluded it as a germline variant. Two unrelated families each had two family members with MPNs and the E208Q in SH2B3 variant. Only 2/4 with MPNs had thrombocythaemia all had the JAK2 (V617F) variant, the authors concluded that it appears unlikely that SH2B3 alterations may act as driver mutations in MPNs.
Therefore rating SH2B3 as Amber as although germline variants have been discovered the Thromobcythaemia phenotype has only been observed when accompanied with additional known somatic variants in JAK2/CALR
Thrombocythaemia v0.8 SH2B3 Catherine Snow changed review comment from: Limited evidence of SH2B3 (alson known as LNK) variants associated with Thrombocythaemia. Most reporting on Thrombocythaemia are in adjacent to work on Myeloproliferative neoplasms (MPNs) - these are a heterogenous group of malignant haematological disorder, one of the seven diagnostic entities is Essential Thrombocythaemia.
• PMID: 27237057 Aimed to discover new variants associated with familial forms of MPN's, sequenced 26 members from five families with at least two members affected by MPN. The proband had primary myelofibrosis phenotype a SH2B3 variant and a CALR variant were identified. The probands daughter had a thrombocythaemia phenotype with the same SH2B3 variant and a JAK2V617F variant. Three additional family members had the SH2B3 variant but no reported associated phenotypes. Although the SH2B3 variant is germline there is not sufficient evidence that this variant causes a thrombocythaemia phenotype.
• PMID 20404132 identifies a patient with thrombocythaemia with a somatic variant (E208Q) in SH2B3 again when investigating patients with myeloproliferative neoplasms.
• PMID 27716218 identified a germline variant in SH2B3 in two families affected members had MPNs but not all had thrombocythaemia and concluded that it appears unlikely that SH2B3 alterations may act as driver mutations in MPNs.
Therefore rating SH2B3 as Red as although germline variants have been discovered there is no conclusive association of a thrombocythaemia phenotype and these variants.; to: Limited evidence of SH2B3 (alson known as LNK) variants associated with Thrombocythaemia. Most reporting on Thrombocythaemia are in adjacent to work on Myeloproliferative neoplasms (MPNs) - these are a heterogenous group of malignant haematological disorder, one of the seven diagnostic entities is Essential Thrombocythaemia.
• PMID: 27237057 Aimed to discover new variants associated with familial forms of MPN's, sequenced 26 members from five families with at least two members affected by MPN. The proband had primary myelofibrosis phenotype a SH2B3 variant and a CALR variant were identified. The probands daughter had a thrombocythaemia phenotype with the same SH2B3 variant and a JAK2V617F variant. Three additional family members had the SH2B3 variant but no reported associated phenotypes. Although the SH2B3 variant is germline there is not sufficient evidence that this variant causes a thrombocythaemia phenotype.
• PMID 20404132 identifies a patient with thrombocythaemia with a somatic variant (E208Q) in SH2B3 again when investigating patients with myeloproliferative neoplasms.
• PMID 27716218 identified a germline variant in SH2B3 in two families affected members had MPNs but not all had thrombocythaemia and concluded that it appears unlikely that SH2B3 alterations may act as driver mutations in MPNs.
Therefore rating SH2B3 as Red as although germline variants have been discovered there is no conclusive association of a thrombocythaemia phenotype with these variants.
Thrombocythaemia v0.8 SH2B3 Catherine Snow changed review comment from: Limited evidence of SH2B3 (alson known as LNK) variants associated with Thrombocythaemia. Most reporting on Thrombocythaemia are in adjacent to work on Myeloproliferative neoplasms (MPNs) - these are a heterogenous group of malignant haematological disorder, one of the seven diagnostic entities of it is essential Thrombocythaemia.
• PMID: 27237057 Aimed to discover new variants associated with familial forms of MPN's, sequenced 26 members from five families with at least two members affected by MPN. The proband had primary myelofibrosis phenotype a SH2B3 variant and a CALR variant were identified. The probands daughter had a thrombocythaemia phenotype with the same SH2B3 variant and a JAK2V617F variant. Three additional family members had the SH2B3 variant but no reported associated phenotypes. Although the SH2B3 variant is germline there is not sufficient evidence that this variant causes a thrombocythaemia phenotype.
• PMID 20404132 identifies a patient with thrombocythaemia with a somatic variant (E208Q) in SH2B3 again when investigating patients with myeloproliferative neoplasms.
• PMID 27716218 identified a germline variant in SH2B3 in two families affected members had MPNs but not all had thrombocythaemia and concluded that it appears unlikely that SH2B3 alterations may act as driver mutations in MPNs.
Therefore rating SH2B3 as Red as although germline variants have been discovered there is no conclusive association of a thrombocythaemia phenotype and these variants.; to: Limited evidence of SH2B3 (alson known as LNK) variants associated with Thrombocythaemia. Most reporting on Thrombocythaemia are in adjacent to work on Myeloproliferative neoplasms (MPNs) - these are a heterogenous group of malignant haematological disorder, one of the seven diagnostic entities is Essential Thrombocythaemia.
• PMID: 27237057 Aimed to discover new variants associated with familial forms of MPN's, sequenced 26 members from five families with at least two members affected by MPN. The proband had primary myelofibrosis phenotype a SH2B3 variant and a CALR variant were identified. The probands daughter had a thrombocythaemia phenotype with the same SH2B3 variant and a JAK2V617F variant. Three additional family members had the SH2B3 variant but no reported associated phenotypes. Although the SH2B3 variant is germline there is not sufficient evidence that this variant causes a thrombocythaemia phenotype.
• PMID 20404132 identifies a patient with thrombocythaemia with a somatic variant (E208Q) in SH2B3 again when investigating patients with myeloproliferative neoplasms.
• PMID 27716218 identified a germline variant in SH2B3 in two families affected members had MPNs but not all had thrombocythaemia and concluded that it appears unlikely that SH2B3 alterations may act as driver mutations in MPNs.
Therefore rating SH2B3 as Red as although germline variants have been discovered there is no conclusive association of a thrombocythaemia phenotype and these variants.
Thrombocythaemia v0.8 SH2B3 Catherine Snow edited their review of gene: SH2B3: Added comment: Limited evidence of SH2B3 (alson known as LNK) variants associated with Thrombocythaemia. Most reporting on Thrombocythaemia are in adjacent to work on Myeloproliferative neoplasms (MPNs) - these are a heterogenous group of malignant haematological disorder, one of the seven diagnostic entities of it is essential Thrombocythaemia.
• PMID: 27237057 Aimed to discover new variants associated with familial forms of MPN's, sequenced 26 members from five families with at least two members affected by MPN. The proband had primary myelofibrosis phenotype a SH2B3 variant and a CALR variant were identified. The probands daughter had a thrombocythaemia phenotype with the same SH2B3 variant and a JAK2V617F variant. Three additional family members had the SH2B3 variant but no reported associated phenotypes. Although the SH2B3 variant is germline there is not sufficient evidence that this variant causes a thrombocythaemia phenotype.
• PMID 20404132 identifies a patient with thrombocythaemia with a somatic variant (E208Q) in SH2B3 again when investigating patients with myeloproliferative neoplasms.
• PMID 27716218 identified a germline variant in SH2B3 in two families affected members had MPNs but not all had thrombocythaemia and concluded that it appears unlikely that SH2B3 alterations may act as driver mutations in MPNs.
Therefore rating SH2B3 as Red as although germline variants have been discovered there is no conclusive association of a thrombocythaemia phenotype and these variants.; Changed publications: 20404132, 27716218, 27237057
Thrombocythaemia v0.8 CALR Eleanor Williams changed review comment from: Associated with Myelofibrosis, somatic MIM#254450 and Thrombocythemia, somatic MIM#187950 in OMIM.

PMID: 24325356 - Klampfl et al 2013 - performed WES to identify somatically acquired mutations in six patients who had primary myelofibrosis without mutations in JAK2 or MPL. Two patients had somatic deletions in exon 9 of CALR, and the remaining 4 had a recurrent 5-bp insertion. They then screened 382 patients with polycythemia vera, 311 with essential thrombocythemia, and 203 with primary myelofibrosis for alterations in CALR. 78 patients with essential thrombocythemia (25%) and 72 with primary myelofibrosis (35%) had mutations in CALR. All patients with mutated CALR had nonmutated JAK2 and MPL.

PMID: 24325359 - Nangalia et al 2013 - performed exome sequencing of samples obtained from 151 patients with myeloproliferative neoplasms. The mutation status of the gene encoding calreticulin (CALR) was assessed in an additional 1345 hematologic cancers, 1517 other cancers, and 550 controls. Somatic CALR mutations were found in 70 to 84% of samples of myeloproliferative neoplasms with nonmutated JAK2, in 8% of myelodysplasia samples, in occasional samples of other myeloid cancers, and in none of the other cancers.

PMID: 31778606 - Jan and Choi 2020 - review of molecular basis of myeloproliferative neoplasms - only somatic mutations mentioned, no germline.; to: Associated with Myelofibrosis, somatic MIM#254450 and Thrombocythemia, somatic MIM#187950 in OMIM.

2 papers report somatic mutations. No germline mutations reported to date.

PMID: 24325356 - Klampfl et al 2013 - performed WES to identify somatically acquired mutations in six patients who had primary myelofibrosis without mutations in JAK2 or MPL. Two patients had somatic deletions in exon 9 of CALR, and the remaining 4 had a recurrent 5-bp insertion. They then screened 382 patients with polycythemia vera, 311 with essential thrombocythemia, and 203 with primary myelofibrosis for alterations in CALR. 78 patients with essential thrombocythemia (25%) and 72 with primary myelofibrosis (35%) had mutations in CALR. All patients with mutated CALR had nonmutated JAK2 and MPL.

PMID: 24325359 - Nangalia et al 2013 - performed exome sequencing of samples obtained from 151 patients with myeloproliferative neoplasms. The mutation status of the gene encoding calreticulin (CALR) was assessed in an additional 1345 hematologic cancers, 1517 other cancers, and 550 controls. Somatic CALR mutations were found in 70 to 84% of samples of myeloproliferative neoplasms with nonmutated JAK2, in 8% of myelodysplasia samples, in occasional samples of other myeloid cancers, and in none of the other cancers.

PMID: 31778606 - Jan and Choi 2020 - review of molecular basis of myeloproliferative neoplasms - only somatic mutations mentioned, no germline.
Thrombocythaemia v0.8 CALR Eleanor Williams Phenotypes for gene: CALR were changed from Thrombocythemia, somatic, 187950 to Thrombocythemia, somatic, 187950; Myelofibrosis, somatic, 254450
Thrombocythaemia v0.7 CALR Eleanor Williams Publications for gene: CALR were set to
Thrombocythaemia v0.6 CALR Eleanor Williams reviewed gene: CALR: Rating: AMBER; Mode of pathogenicity: None; Publications: 24325356, 24325359, 31778606; Phenotypes: Myelofibrosis, somatic, 254450, Thrombocythemia, somatic, 187950; Mode of inheritance: Unknown
Thrombocythaemia v0.1 CALR Arina Puzriakova Tag somatic tag was added to gene: CALR.
Thrombocythaemia v0.1 CALR Arina Puzriakova reviewed gene: CALR: Rating: ; Mode of pathogenicity: ; Publications: ; Phenotypes: ; Mode of inheritance: Unknown
Thrombocythaemia v0.0 CALR Arina Puzriakova gene: CALR was added
gene: CALR was added to Thrombocythaemia. Sources: NHS GMS,Expert Review Amber
Mode of inheritance for gene: CALR was set to Unknown
Phenotypes for gene: CALR were set to Thrombocythemia, somatic, 187950