Table 1 Selection of OGM findings for Cas9-directed long-read sequencing.

From: Cas9-directed long-read sequencing to resolve optical genome mapping findings in leukemia diagnostics

ID

Referral reason

OGM (splitted per aberration)

SOC

Identified with SOC

Detection problem

BMA1

AML/MDS/MPN

ogm[GRCh37]1q21.1q21.1(144452084_249237532) × 2 ~ 3

Karyotyping

Yes

 

BMA2

CML

ogm[GRCh37]t(9;22)(q34;q11.2)(133619362_23603312)

Karyotyping

Yes

 

BMA8

CML

ogm[GRCh37]t(9;22)(q34;q11.2)

Karyotyping

Yes

 

BMA16

HCL (CLL)

ogm[GRCh37](X) × 1,(1–22) × 2

Karyotyping

Yes

 

BMA16

HCL (CLL)

ogm[GRCh37]t(8;8)(p22;q13.2)(15.548.752;69.835.790)

Karyotyping (1:250 metaphases)

Yes

 

BMA15

MDS/AML

ogm[GRCh37]t(5;5)(q14.2;q33.3)(81.692.066;159.453.630)

Karyotyping, SNP-arrays

Yes

 

BMA8

CML

ogm[GRCh37]22q11.23;q12.1)(23,734,214;29,424,129) × 1

SNP-arrays

Yes

 

BMA9

MDS

ogm[GRCh37]chr21 × 3

SNP-arrays

Yes

 

BMA10

MDS/MPN

ogm[GRCh37]9p24.3p13.3(1_35889394) × 2 hmz

SNP-arrays

Yes

 

BMA10

MDS/MPN

ogm[GRCh37]14q11.2q12(20421719_32361050) × 1

SNP-arrays

Yes

 

BMA12

(B)-CLL

ogm[GRCh37]chr12 × 3

SNP-arrays

Yes

 

BMA13

MDS

ogm[GRCh37] 20q11.22q13.13(34259243_49502193) × 1

SNP-arrays

Yes

 

BMA16

HCL (CLL)

ogm[GRCh37]8p23.3p22(11805_15540773) × 1 ~ 2

SNP-arrays

Yes

 

BMA1

AML/MDS/MPN

ogm[GRCh37]17p13.1(7,545,377_7,588,071) × 1

Could not be confirmed

No

Aberration located in between 2 OGM labels

BMA3

AML/MDS

ogm[GRCh37]17p13.1(7,545,377_7,588,071) × 1

Could not be confirmed

No

Aberration located in between 2 OGM labels

BMA6

MDS

ogm[GRCh37]17p13.1(7,545,377_7,588,071) × 1

Could not be confirmed

No

Aberration located in between 2 OGM labels

BMA17

MDS

ogm[GRCh37]ins(12p13.2)(11,889,007_11,895,594)

Could not be confirmed

No

Aberration located in between 2 OGM labels

BMA16

HCL (CLL)

ogm[GRCh37]t(14;17)(q32.22;q25.3) (106,249,815;80,915,618)

Could not be confirmed

No

Disputable breakpoint

BMA7

MDS/MF

ogm[GRCh37]inv(3)(q25.33q26.2)(160,014,744_168,882,939)

Could not be confirmed

No

Resolution SOC too low

BMA7

MDS/MF

ogm[GRCh37]3q25.33(159,902,689–160,014,744) × 1

Could not be confirmed

No

Resolution SOC too low

BMA7

MDS/MF

ogm[GRCh37]3q26.2(168,882,939–168,907,480) × 1

Could not be confirmed

No

Resolution SOC too low

BMA9

MDS

ogm[GRCh37]inv(15)(q24.1q24.1)(72,959,741_74,362,190)

Could not be confirmed

No

Resolution SOC too low

BMA9

MDS

ogm[GRCh37]3p13(71086423_71375386) × 1

Could not be confirmed

No

Resolution SOC too low

  1. Aberrations detected using optical genome mapping (OGM) in a selected group of 18 bone marrow aspirates (BMA) with varying reasons for referral are depicted in this table. The table indicates if these aberrations were confirmed with the standard-of-care (SOC) methods (yes, no) and, if not, the detection problem is mentioned. Abbreviations referral reason: AML, acute myeloid leukemia; MDS, myelodysplastic syndrome; MPN, myeloproliferative neoplasms; CML, chronic myeloid leukemia; HCL, hairy cell leukemia; CLL, chronic lymphoblastic leukemia; (B)CLL, B-cell acute lymphoblastic leukemia; MF, myelofibrosis.