Abstract: A method for spatially tagging nucleic acids of a biological specimen, including steps of (a) providing a solid support comprising different nucleic acid probes that are randomly located on the solid support, wherein the different nucleic acid probes each includes a barcode sequence that differs from the barcode sequence of other randomly located probes on the solid support; (b) performing a nucleic acid detection reaction on the solid support to locate the barcode sequences on the solid support; (c) contacting a biological specimen with the solid support that has the randomly located probes; (d) hybridizing the randomly located probes to target nucleic acids from portions of the biological specimen; and (e) modifying the randomly located probes that are hybridized to the target nucleic acids, thereby producing modified probes that include the barcode sequences and a target specific modification, thereby spatially tagging the nucleic acids of the biological specimen.

Abstract: A method for enriching a target nucleic acid comprising providing an endonuclease system having a crRNA or a derivative thereof, and a Cas protein or a variant thereof. The crRNA or the derivative thereof contains a target-specific nucleotide region substantially complementary to a region of the target nucleic acid; contacting the target nucleic acid with the endonuclease system to form a complex; and separating the complex and thereby enriching for the target nucleic acid.

Abstract: A method for enriching a target nucleic acid comprising providing an endonuclease system having a crRNA or a derivative thereof, and a Cas protein or a variant thereof. The crRNA or the derivative thereof contains a target-specific nucleotide region substantially complementary to a region of the target nucleic acid; contacting the target nucleic acid with the endonuclease system to form a complex; and separating the complex and thereby enriching for the target nucleic acid.

Abstract: A method for spatially tagging nucleic acids of a biological specimen, including steps of (a) providing a solid support comprising different nucleic acid probes that are randomly located on the solid support, wherein the different nucleic acid probes each includes a barcode sequence that differs from the barcode sequence of other randomly located probes on the solid support; (b) performing a nucleic acid detection reaction on the solid support to locate the barcode sequences on the solid support; (c) contacting a biological specimen with the solid support that has the randomly located probes; (d) hybridizing the randomly located probes to target nucleic acids from portions of the biological specimen; and (e) modifying the randomly located probes that are hybridized to the target nucleic acids, thereby producing modified probes that include the barcode sequences and a target specific modification, thereby spatially tagging the nucleic acids of the biological specimen.

Abstract: Disclosed are methods for determining at least one sequence of interest of a fetus of a pregnant mother. In various embodiments, the method can determine one or more sequences of interest in a test sample that comprises a mixture of fetal cellular DNA and mother-and-fetus cfDNA. In some embodiments, methods are provided for determining whether the fetus has a genetic disease. In some embodiments, methods are provided for determining whether the fetus is homozygous in a disease causing allele when the mother is heterozygous of the same allele. In some embodiments, methods are provided for determining whether the fetus has a copy number variation (CNV) or a non-CNV genetic sequence anomaly.

Abstract: Disclosed are methods for determining at least one sequence of interest of a fetus of a pregnant mother. In various embodiments, the method can determine one or more sequences of interest in a test sample that comprises a mixture of fetal cellular DNA and mother-and-fetus cfDNA. In some embodiments, methods are provided for determining whether the fetus has a genetic disease. In some embodiments, methods are provided for determining whether the fetus is homozygous in a disease causing allele when the mother is heterozygous of the same allele. In some embodiments, methods are provided for determining whether the fetus has a copy number variation (CNV) or a non-CNV genetic sequence anomaly.

Abstract: Presented herein are methods and compositions for multiplexed single cell gene expression analysis. Some methods and compositions include the use of droplets and/or beads bearing unique barcodes such as unique molecular barcodes (UMI).

Abstract: Disclosed are methods for determining at least one sequence of interest of a fetus of a pregnant mother. In various embodiments, the method can determine one or more sequences of interest in a test sample that comprises a mixture of fetal cellular DNA and mother-and-fetus cfDNA. In some embodiments, methods are provided for determining whether the fetus has a genetic disease. In some embodiments, methods are provided for determining whether the fetus is homozygous in a disease causing allele when the mother is heterozygous of the same allele. In some embodiments, methods are provided for determining whether the fetus has a copy number variation (CNV) or a non-CNV genetic sequence anomaly.

Abstract: A method for enriching a target nucleic acid comprising providing an endonuclease system having a crRNA or a derivative thereof, and a Cas protein or a variant thereof. The crRNA or the derivative thereof contains a target-specific nucleotide region substantially complementary to a region of the target nucleic acid; contacting the target nucleic acid with the endonuclease system to form a complex; and separating the complex and thereby enriching for the target nucleic acid.