Assertion Partly supported AI assessment confidence: 90% certainty 4/5 debate potential 3/5

Bisignano: Science has not truly sequenced the entire human genome

Alexander Bisignano · Alexander Bisignano, Recombine // Genetic Testing // Data Driven NYC (FirstMark Capital) · Feb 18, 2015 · at 13:49

Alexander Bisignano, CEO of genetic testing company Recombine, addresses current limitations of DNA sequencing technologies at Data Driven NYC.

0:00 / 0:05exact quote · 5.6s

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“We actually haven't truly sequenced the whole human genome just because there's so much variation that we can't capture yet.”

quote is from the automated transcript, cleaned for reading: filler sounds and stutters are removed, nothing is rephrased. names can be misheard (the analysis reads context, assessments check outside sources). how →

The claim, plainly

As of 2015, the entire human genome had not been fully sequenced due to uncaptured genetic variation across populations.

a quote alone can be ambiguous, so this restates it with the references and context of the conversation around it resolved. AI-written; the tape below the player is the source.

Assessment

The claim is partially true. As of February 2015, the human genome had indeed not been fully sequenced; the standard reference genome build at the time (GRCh38) contained over 150 megabase pairs of unsequenced gaps (~5% to 8% of the genome), and a complete gapless sequence was not published until 2021-2022 by the Telomere-to-Telomere (T2T) Consortium. However, the speaker incorrectly attributes these gaps to uncaptured population-level genetic variation. Genomics reference records confirm that the primary cause of unsequenced gaps was technological limitations in short-read sequencing and assembling highly repetitive DNA sequences (e.g., centromeric and satellite arrays).

As of February 2015, GRCh38 contained ~150 Mbp of unsequenced sequence gaps (~5-8% of the human genome).
Gaps were primarily caused by technological inability to sequence complex, repetitive DNA regions rather than uncaptured population variation.
The first complete, gapless sequence of a human genome was published in 2021-2022 by the T2T Consortium.

Checked against

[1] ucsc.edu [2] oup.com [3] bitesizebio.com [4] geneyx.com [5] nanoporetech.com [6] nih.gov [7] nih.gov [8] broadinstitute.org

"GRCh38" gaps human genome complete sequence 2015 Genome Reference Consortium GRCh38 release date gaps when was the entire human genome fully sequenced T2T consortium

assessed as of 2026-07-30

This assessment is an AI reading of a public statement, made against the cited references with the confidence shown. It can be wrong. The quote, the tape and the references are all on this page; if something is off, use report an error below. full disclaimer →

Mentioned

human genome

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Assertion Supported

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Assertion Not checkable as stated

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Assertion Contradicted

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Assertion Contradicted

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Bisignano: Science has not truly sequenced the entire human genome

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